From 983e37007da506e8145f9b3a9e1dce5c11116fb0 Mon Sep 17 00:00:00 2001 From: Tom Rini Date: Mon, 7 Nov 2016 21:34:54 -0500 Subject: arm: Introduce arch/arm/mach-omap2 for OMAP2 derivative platforms This moves what was in arch/arm/cpu/armv7/omap-common in to arch/arm/mach-omap2 and moves arch/arm/cpu/armv7/{am33xx,omap3,omap4,omap5} in to arch/arm/mach-omap2 as subdirectories. All refernces to the former locations are updated to the current locations. For the logic to decide what our outputs are, consolidate the tests into a single config.mk rather than including 4. Signed-off-by: Tom Rini --- arch/arm/mach-omap2/am33xx/Kconfig | 137 ++++++++ arch/arm/mach-omap2/am33xx/Makefile | 22 ++ arch/arm/mach-omap2/am33xx/board.c | 317 +++++++++++++++++++ arch/arm/mach-omap2/am33xx/clk_synthesizer.c | 104 +++++++ arch/arm/mach-omap2/am33xx/clock.c | 246 +++++++++++++++ arch/arm/mach-omap2/am33xx/clock_am33xx.c | 234 ++++++++++++++ arch/arm/mach-omap2/am33xx/clock_am43xx.c | 231 ++++++++++++++ arch/arm/mach-omap2/am33xx/clock_ti814x.c | 410 ++++++++++++++++++++++++ arch/arm/mach-omap2/am33xx/clock_ti816x.c | 450 +++++++++++++++++++++++++++ arch/arm/mach-omap2/am33xx/ddr.c | 377 ++++++++++++++++++++++ arch/arm/mach-omap2/am33xx/emif4.c | 140 +++++++++ arch/arm/mach-omap2/am33xx/mux.c | 33 ++ arch/arm/mach-omap2/am33xx/sys_info.c | 176 +++++++++++ arch/arm/mach-omap2/am33xx/u-boot-spl.lds | 56 ++++ 14 files changed, 2933 insertions(+) create mode 100644 arch/arm/mach-omap2/am33xx/Kconfig create mode 100644 arch/arm/mach-omap2/am33xx/Makefile create mode 100644 arch/arm/mach-omap2/am33xx/board.c create mode 100644 arch/arm/mach-omap2/am33xx/clk_synthesizer.c create mode 100644 arch/arm/mach-omap2/am33xx/clock.c create mode 100644 arch/arm/mach-omap2/am33xx/clock_am33xx.c create mode 100644 arch/arm/mach-omap2/am33xx/clock_am43xx.c create mode 100644 arch/arm/mach-omap2/am33xx/clock_ti814x.c create mode 100644 arch/arm/mach-omap2/am33xx/clock_ti816x.c create mode 100644 arch/arm/mach-omap2/am33xx/ddr.c create mode 100644 arch/arm/mach-omap2/am33xx/emif4.c create mode 100644 arch/arm/mach-omap2/am33xx/mux.c create mode 100644 arch/arm/mach-omap2/am33xx/sys_info.c create mode 100644 arch/arm/mach-omap2/am33xx/u-boot-spl.lds (limited to 'arch/arm/mach-omap2/am33xx') diff --git a/arch/arm/mach-omap2/am33xx/Kconfig b/arch/arm/mach-omap2/am33xx/Kconfig new file mode 100644 index 0000000000..8fd32c2a46 --- /dev/null +++ b/arch/arm/mach-omap2/am33xx/Kconfig @@ -0,0 +1,137 @@ +if AM33XX + +choice + prompt "AM33xx board select" + optional + +config TARGET_AM335X_EVM + bool "Support am335x_evm" + select DM + select DM_SERIAL + select DM_GPIO + select TI_I2C_BOARD_DETECT + help + This option specifies support for the AM335x + GP and HS EVM development platforms. The AM335x + GP EVM is a standalone test, development, and + evaluation module system that enables developers + to write software and develop hardware around + an AM335x processor subsystem. + +config TARGET_AM335X_BALTOS + bool "Support am335x_baltos" + select DM + select DM_SERIAL + select DM_GPIO + +config TARGET_AM335X_IGEP0033 + bool "Support am335x_igep0033" + select DM + select DM_SERIAL + select DM_GPIO + +config TARGET_AM335X_SHC + bool "Support am335x based shc board from bosch" + select DM + select DM_SERIAL + select DM_GPIO + +config TARGET_AM335X_SL50 + bool "Support am335x_sl50" + select DM + select DM_SERIAL + select DM_GPIO + +config TARGET_BAV335X + bool "Support bav335x" + select DM + select DM_SERIAL + help + The BAV335x OEM Network Processor integrates all the functions of an + embedded network computer in a small, easy to use SODIMM module which + incorporates the popular Texas Instruments Sitara 32bit ARM Coretex-A8 + processor, with fast DDR3 512MB SDRAM, 4GB of embedded MMC and a Gigabit + ethernet with simple connection to external connectors. + + For more information, visit: http://birdland.com/oem + +config TARGET_CM_T335 + bool "Support cm_t335" + select DM + select DM_SERIAL + select DM_GPIO + +config TARGET_PCM051 + bool "Support pcm051" + select DM + select DM_SERIAL + select DM_GPIO + +config TARGET_PENGWYN + bool "Support pengwyn" + select DM + select DM_SERIAL + select DM_GPIO + +config TARGET_PEPPER + bool "Support pepper" + select DM + select DM_SERIAL + select DM_GPIO + +endchoice + +endif + +if AM43XX + +config SPL_EXT_SUPPORT + default y + +config SPL_GPIO_SUPPORT + default y + +config SPL_I2C_SUPPORT + default y + +config TARGET_AM43XX_EVM + bool "Support am43xx_evm" + select TI_I2C_BOARD_DETECT + help + This option specifies support for the AM43xx + GP and HS EVM development platforms.The AM437x + GP EVM is a standalone test, development, and + evaluation module system that enables developers + to write software and develop hardware around + an AM43xx processor subsystem. +endif + +if AM43XX || AM33XX +config ISW_ENTRY_ADDR + hex "Address in memory or XIP flash of bootloader entry point" + help + After any reset, the boot ROM on the AM43XX SOC + searches the boot media for a valid boot image. + For non-XIP devices, the ROM then copies the + image into internal memory. + For all boot modes, after the ROM processes the + boot image it eventually computes the entry + point address depending on the device type + (secure/non-secure), boot media (xip/non-xip) and + image headers. + default 0x402F4000 + +config PUB_ROM_DATA_SIZE + hex "Size in bytes of the L3 SRAM reserved by ROM to store data" + help + During the device boot, the public ROM uses the top of + the public L3 OCMC RAM to store r/w data like stack, + heap, globals etc. When the ROM is copying the boot + image from the boot media into memory, the image must + not spill over into this area. This value can be used + during compile time to determine the maximum size of a + boot image. Once the ROM transfers control to the boot + image, this area is no longer used, and can be reclaimed + for run time use by the boot image. + default 0x8400 +endif diff --git a/arch/arm/mach-omap2/am33xx/Makefile b/arch/arm/mach-omap2/am33xx/Makefile new file mode 100644 index 0000000000..6fda4825fc --- /dev/null +++ b/arch/arm/mach-omap2/am33xx/Makefile @@ -0,0 +1,22 @@ +# +# Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/ +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-$(CONFIG_AM33XX) += clock_am33xx.o +obj-$(CONFIG_TI814X) += clock_ti814x.o +obj-$(CONFIG_AM43XX) += clock_am43xx.o + +ifneq ($(CONFIG_AM43XX)$(CONFIG_AM33XX),) +obj-y += clock.o +endif + +obj-$(CONFIG_TI816X) += clock_ti816x.o +obj-y += sys_info.o +obj-y += ddr.o +obj-y += emif4.o +obj-y += board.o +obj-y += mux.o + +obj-$(CONFIG_CLOCK_SYNTHESIZER) += clk_synthesizer.o diff --git a/arch/arm/mach-omap2/am33xx/board.c b/arch/arm/mach-omap2/am33xx/board.c new file mode 100644 index 0000000000..5ebeac0ee1 --- /dev/null +++ b/arch/arm/mach-omap2/am33xx/board.c @@ -0,0 +1,317 @@ +/* + * board.c + * + * Common board functions for AM33XX based boards + * + * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/ + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +#if !CONFIG_IS_ENABLED(OF_CONTROL) +static const struct ns16550_platdata am33xx_serial[] = { + { .base = CONFIG_SYS_NS16550_COM1, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, +# ifdef CONFIG_SYS_NS16550_COM2 + { .base = CONFIG_SYS_NS16550_COM2, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, +# ifdef CONFIG_SYS_NS16550_COM3 + { .base = CONFIG_SYS_NS16550_COM3, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, + { .base = CONFIG_SYS_NS16550_COM4, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, + { .base = CONFIG_SYS_NS16550_COM5, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, + { .base = CONFIG_SYS_NS16550_COM6, .reg_shift = 2, .clock = CONFIG_SYS_NS16550_CLK }, +# endif +# endif +}; + +U_BOOT_DEVICES(am33xx_uarts) = { + { "ns16550_serial", &am33xx_serial[0] }, +# ifdef CONFIG_SYS_NS16550_COM2 + { "ns16550_serial", &am33xx_serial[1] }, +# ifdef CONFIG_SYS_NS16550_COM3 + { "ns16550_serial", &am33xx_serial[2] }, + { "ns16550_serial", &am33xx_serial[3] }, + { "ns16550_serial", &am33xx_serial[4] }, + { "ns16550_serial", &am33xx_serial[5] }, +# endif +# endif +}; + +#ifdef CONFIG_DM_GPIO +static const struct omap_gpio_platdata am33xx_gpio[] = { + { 0, AM33XX_GPIO0_BASE }, + { 1, AM33XX_GPIO1_BASE }, + { 2, AM33XX_GPIO2_BASE }, + { 3, AM33XX_GPIO3_BASE }, +#ifdef CONFIG_AM43XX + { 4, AM33XX_GPIO4_BASE }, + { 5, AM33XX_GPIO5_BASE }, +#endif +}; + +U_BOOT_DEVICES(am33xx_gpios) = { + { "gpio_omap", &am33xx_gpio[0] }, + { "gpio_omap", &am33xx_gpio[1] }, + { "gpio_omap", &am33xx_gpio[2] }, + { "gpio_omap", &am33xx_gpio[3] }, +#ifdef CONFIG_AM43XX + { "gpio_omap", &am33xx_gpio[4] }, + { "gpio_omap", &am33xx_gpio[5] }, +#endif +}; +#endif +#endif + +#ifndef CONFIG_DM_GPIO +static const struct gpio_bank gpio_bank_am33xx[] = { + { (void *)AM33XX_GPIO0_BASE }, + { (void *)AM33XX_GPIO1_BASE }, + { (void *)AM33XX_GPIO2_BASE }, + { (void *)AM33XX_GPIO3_BASE }, +#ifdef CONFIG_AM43XX + { (void *)AM33XX_GPIO4_BASE }, + { (void *)AM33XX_GPIO5_BASE }, +#endif +}; + +const struct gpio_bank *const omap_gpio_bank = gpio_bank_am33xx; +#endif + +#if defined(CONFIG_OMAP_HSMMC) && !defined(CONFIG_SPL_BUILD) +int cpu_mmc_init(bd_t *bis) +{ + int ret; + + ret = omap_mmc_init(0, 0, 0, -1, -1); + if (ret) + return ret; + + return omap_mmc_init(1, 0, 0, -1, -1); +} +#endif + +/* AM33XX has two MUSB controllers which can be host or gadget */ +#if (defined(CONFIG_USB_MUSB_GADGET) || defined(CONFIG_USB_MUSB_HOST)) && \ + (defined(CONFIG_AM335X_USB0) || defined(CONFIG_AM335X_USB1)) +static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE; + +/* USB 2.0 PHY Control */ +#define CM_PHY_PWRDN (1 << 0) +#define CM_PHY_OTG_PWRDN (1 << 1) +#define OTGVDET_EN (1 << 19) +#define OTGSESSENDEN (1 << 20) + +static void am33xx_usb_set_phy_power(u8 on, u32 *reg_addr) +{ + if (on) { + clrsetbits_le32(reg_addr, CM_PHY_PWRDN | CM_PHY_OTG_PWRDN, + OTGVDET_EN | OTGSESSENDEN); + } else { + clrsetbits_le32(reg_addr, 0, CM_PHY_PWRDN | CM_PHY_OTG_PWRDN); + } +} + +static struct musb_hdrc_config musb_config = { + .multipoint = 1, + .dyn_fifo = 1, + .num_eps = 16, + .ram_bits = 12, +}; + +#ifdef CONFIG_AM335X_USB0 +static void am33xx_otg0_set_phy_power(u8 on) +{ + am33xx_usb_set_phy_power(on, &cdev->usb_ctrl0); +} + +struct omap_musb_board_data otg0_board_data = { + .set_phy_power = am33xx_otg0_set_phy_power, +}; + +static struct musb_hdrc_platform_data otg0_plat = { + .mode = CONFIG_AM335X_USB0_MODE, + .config = &musb_config, + .power = 50, + .platform_ops = &musb_dsps_ops, + .board_data = &otg0_board_data, +}; +#endif + +#ifdef CONFIG_AM335X_USB1 +static void am33xx_otg1_set_phy_power(u8 on) +{ + am33xx_usb_set_phy_power(on, &cdev->usb_ctrl1); +} + +struct omap_musb_board_data otg1_board_data = { + .set_phy_power = am33xx_otg1_set_phy_power, +}; + +static struct musb_hdrc_platform_data otg1_plat = { + .mode = CONFIG_AM335X_USB1_MODE, + .config = &musb_config, + .power = 50, + .platform_ops = &musb_dsps_ops, + .board_data = &otg1_board_data, +}; +#endif +#endif + +int arch_misc_init(void) +{ +#ifdef CONFIG_AM335X_USB0 + musb_register(&otg0_plat, &otg0_board_data, + (void *)USB0_OTG_BASE); +#endif +#ifdef CONFIG_AM335X_USB1 + musb_register(&otg1_plat, &otg1_board_data, + (void *)USB1_OTG_BASE); +#endif + return 0; +} + +#ifndef CONFIG_SKIP_LOWLEVEL_INIT +/* + * In the case of non-SPL based booting we'll want to call these + * functions a tiny bit later as it will require gd to be set and cleared + * and that's not true in s_init in this case so we cannot do it there. + */ +int board_early_init_f(void) +{ + prcm_init(); + set_mux_conf_regs(); + + return 0; +} + +/* + * This function is the place to do per-board things such as ramp up the + * MPU clock frequency. + */ +__weak void am33xx_spl_board_init(void) +{ + do_setup_dpll(&dpll_core_regs, &dpll_core_opp100); + do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100); +} + +#if defined(CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC) +static void rtc32k_enable(void) +{ + struct davinci_rtc *rtc = (struct davinci_rtc *)RTC_BASE; + + /* + * Unlock the RTC's registers. For more details please see the + * RTC_SS section of the TRM. In order to unlock we need to + * write these specific values (keys) in this order. + */ + writel(RTC_KICK0R_WE, &rtc->kick0r); + writel(RTC_KICK1R_WE, &rtc->kick1r); + + /* Enable the RTC 32K OSC by setting bits 3 and 6. */ + writel((1 << 3) | (1 << 6), &rtc->osc); +} +#endif + +static void uart_soft_reset(void) +{ + struct uart_sys *uart_base = (struct uart_sys *)DEFAULT_UART_BASE; + u32 regval; + + regval = readl(&uart_base->uartsyscfg); + regval |= UART_RESET; + writel(regval, &uart_base->uartsyscfg); + while ((readl(&uart_base->uartsyssts) & + UART_CLK_RUNNING_MASK) != UART_CLK_RUNNING_MASK) + ; + + /* Disable smart idle */ + regval = readl(&uart_base->uartsyscfg); + regval |= UART_SMART_IDLE_EN; + writel(regval, &uart_base->uartsyscfg); +} + +static void watchdog_disable(void) +{ + struct wd_timer *wdtimer = (struct wd_timer *)WDT_BASE; + + writel(0xAAAA, &wdtimer->wdtwspr); + while (readl(&wdtimer->wdtwwps) != 0x0) + ; + writel(0x5555, &wdtimer->wdtwspr); + while (readl(&wdtimer->wdtwwps) != 0x0) + ; +} + +void s_init(void) +{ +} + +void early_system_init(void) +{ + /* + * The ROM will only have set up sufficient pinmux to allow for the + * first 4KiB NOR to be read, we must finish doing what we know of + * the NOR mux in this space in order to continue. + */ +#ifdef CONFIG_NOR_BOOT + enable_norboot_pin_mux(); +#endif + watchdog_disable(); + set_uart_mux_conf(); + setup_early_clocks(); + uart_soft_reset(); +#ifdef CONFIG_TI_I2C_BOARD_DETECT + do_board_detect(); +#endif +#if defined(CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC) + /* Enable RTC32K clock */ + rtc32k_enable(); +#endif +} + +#ifdef CONFIG_SPL_BUILD +void board_init_f(ulong dummy) +{ + early_system_init(); + board_early_init_f(); + sdram_init(); +} +#endif + +#endif + +int arch_cpu_init_dm(void) +{ +#ifndef CONFIG_SKIP_LOWLEVEL_INIT + early_system_init(); +#endif + return 0; +} diff --git a/arch/arm/mach-omap2/am33xx/clk_synthesizer.c b/arch/arm/mach-omap2/am33xx/clk_synthesizer.c new file mode 100644 index 0000000000..316e677c65 --- /dev/null +++ b/arch/arm/mach-omap2/am33xx/clk_synthesizer.c @@ -0,0 +1,104 @@ +/* + * clk-synthesizer.c + * + * Clock synthesizer apis + * + * Copyright (C) 2016, Texas Instruments, Incorporated - http://www.ti.com/ + * + * SPDX-License-Identifier: GPL-2.0+ + */ + + +#include +#include +#include + +/** + * clk_synthesizer_reg_read - Read register from synthesizer. + * @addr: addr within the i2c device + * buf: Buffer to which value is to be read. + * + * For reading the register from this clock synthesizer, a command needs to + * be send along with enabling byte read more, and then read can happen. + * Returns 0 on success + */ +static int clk_synthesizer_reg_read(int addr, uint8_t *buf) +{ + int rc; + + /* Enable Bye read */ + addr = addr | CLK_SYNTHESIZER_BYTE_MODE; + + /* Send the command byte */ + rc = i2c_write(CLK_SYNTHESIZER_I2C_ADDR, addr, 1, buf, 1); + if (rc) + printf("Failed to send command to clock synthesizer\n"); + + /* Read the Data */ + return i2c_read(CLK_SYNTHESIZER_I2C_ADDR, addr, 1, buf, 1); +} + +/** + * clk_synthesizer_reg_write - Write a value to register in synthesizer. + * @addr: addr within the i2c device + * val: Value to be written in the addr. + * + * Enable the byte read mode in the address and start the i2c transfer. + * Returns 0 on success + */ +static int clk_synthesizer_reg_write(int addr, uint8_t val) +{ + uint8_t cmd[2]; + int rc = 0; + + /* Enable byte write */ + cmd[0] = addr | CLK_SYNTHESIZER_BYTE_MODE; + cmd[1] = val; + + rc = i2c_write(CLK_SYNTHESIZER_I2C_ADDR, addr, 1, cmd, 2); + if (rc) + printf("Clock synthesizer reg write failed at addr = 0x%x\n", + addr); + return rc; +} + +/** + * setup_clock_syntherizer - Program the clock synthesizer to get the desired + * frequency. + * @data: Data containing the desired output + * + * This is a PLL-based high performance synthesizer which gives 3 outputs + * as per the PLL_DIV and load capacitor programmed. + */ +int setup_clock_synthesizer(struct clk_synth *data) +{ + int rc; + uint8_t val; + + rc = i2c_probe(CLK_SYNTHESIZER_I2C_ADDR); + if (rc) { + printf("i2c probe failed at address 0x%x\n", + CLK_SYNTHESIZER_I2C_ADDR); + return rc; + } + + rc = clk_synthesizer_reg_read(CLK_SYNTHESIZER_ID_REG, &val); + if (val != data->id) + return rc; + + /* Crystal Load capacitor selection */ + rc = clk_synthesizer_reg_write(CLK_SYNTHESIZER_XCSEL, data->capacitor); + if (rc) + return rc; + rc = clk_synthesizer_reg_write(CLK_SYNTHESIZER_MUX_REG, data->mux); + if (rc) + return rc; + rc = clk_synthesizer_reg_write(CLK_SYNTHESIZER_PDIV2_REG, data->pdiv2); + if (rc) + return rc; + rc = clk_synthesizer_reg_write(CLK_SYNTHESIZER_PDIV3_REG, data->pdiv3); + if (rc) + return rc; + + return 0; +} diff --git a/arch/arm/mach-omap2/am33xx/clock.c b/arch/arm/mach-omap2/am33xx/clock.c new file mode 100644 index 0000000000..3d17698e18 --- /dev/null +++ b/arch/arm/mach-omap2/am33xx/clock.c @@ -0,0 +1,246 @@ +/* + * clock.c + * + * Clock initialization for AM33XX boards. + * Derived from OMAP4 boards + * + * Copyright (C) 2013, Texas Instruments, Incorporated - http://www.ti.com/ + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include +#include +#include +#include +#include +#include + +static void setup_post_dividers(const struct dpll_regs *dpll_regs, + const struct dpll_params *params) +{ + /* Setup post-dividers */ + if (params->m2 >= 0) + writel(params->m2, dpll_regs->cm_div_m2_dpll); + if (params->m3 >= 0) + writel(params->m3, dpll_regs->cm_div_m3_dpll); + if (params->m4 >= 0) + writel(params->m4, dpll_regs->cm_div_m4_dpll); + if (params->m5 >= 0) + writel(params->m5, dpll_regs->cm_div_m5_dpll); + if (params->m6 >= 0) + writel(params->m6, dpll_regs->cm_div_m6_dpll); +} + +static inline void do_lock_dpll(const struct dpll_regs *dpll_regs) +{ + clrsetbits_le32(dpll_regs->cm_clkmode_dpll, + CM_CLKMODE_DPLL_DPLL_EN_MASK, + DPLL_EN_LOCK << CM_CLKMODE_DPLL_EN_SHIFT); +} + +static inline void wait_for_lock(const struct dpll_regs *dpll_regs) +{ + if (!wait_on_value(ST_DPLL_CLK_MASK, ST_DPLL_CLK_MASK, + (void *)dpll_regs->cm_idlest_dpll, LDELAY)) { + printf("DPLL locking failed for 0x%x\n", + dpll_regs->cm_clkmode_dpll); + hang(); + } +} + +static inline void do_bypass_dpll(const struct dpll_regs *dpll_regs) +{ + clrsetbits_le32(dpll_regs->cm_clkmode_dpll, + CM_CLKMODE_DPLL_DPLL_EN_MASK, + DPLL_EN_MN_BYPASS << CM_CLKMODE_DPLL_EN_SHIFT); +} + +static inline void wait_for_bypass(const struct dpll_regs *dpll_regs) +{ + if (!wait_on_value(ST_DPLL_CLK_MASK, 0, + (void *)dpll_regs->cm_idlest_dpll, LDELAY)) { + printf("Bypassing DPLL failed 0x%x\n", + dpll_regs->cm_clkmode_dpll); + } +} + +static void bypass_dpll(const struct dpll_regs *dpll_regs) +{ + do_bypass_dpll(dpll_regs); + wait_for_bypass(dpll_regs); +} + +void do_setup_dpll(const struct dpll_regs *dpll_regs, + const struct dpll_params *params) +{ + u32 temp; + + if (!params) + return; + + temp = readl(dpll_regs->cm_clksel_dpll); + + bypass_dpll(dpll_regs); + + /* Set M & N */ + temp &= ~CM_CLKSEL_DPLL_M_MASK; + temp |= (params->m << CM_CLKSEL_DPLL_M_SHIFT) & CM_CLKSEL_DPLL_M_MASK; + + temp &= ~CM_CLKSEL_DPLL_N_MASK; + temp |= (params->n << CM_CLKSEL_DPLL_N_SHIFT) & CM_CLKSEL_DPLL_N_MASK; + + writel(temp, dpll_regs->cm_clksel_dpll); + + setup_post_dividers(dpll_regs, params); + + /* Wait till the DPLL locks */ + do_lock_dpll(dpll_regs); + wait_for_lock(dpll_regs); +} + +static void setup_dplls(void) +{ + const struct dpll_params *params; + + params = get_dpll_core_params(); + do_setup_dpll(&dpll_core_regs, params); + + params = get_dpll_mpu_params(); + do_setup_dpll(&dpll_mpu_regs, params); + + params = get_dpll_per_params(); + do_setup_dpll(&dpll_per_regs, params); + writel(0x300, &cmwkup->clkdcoldodpllper); + + params = get_dpll_ddr_params(); + do_setup_dpll(&dpll_ddr_regs, params); +} + +static inline void wait_for_clk_enable(u32 *clkctrl_addr) +{ + u32 clkctrl, idlest = MODULE_CLKCTRL_IDLEST_DISABLED; + u32 bound = LDELAY; + + while ((idlest == MODULE_CLKCTRL_IDLEST_DISABLED) || + (idlest == MODULE_CLKCTRL_IDLEST_TRANSITIONING)) { + clkctrl = readl(clkctrl_addr); + idlest = (clkctrl & MODULE_CLKCTRL_IDLEST_MASK) >> + MODULE_CLKCTRL_IDLEST_SHIFT; + if (--bound == 0) { + printf("Clock enable failed for 0x%p idlest 0x%x\n", + clkctrl_addr, clkctrl); + return; + } + } +} + +static inline void enable_clock_module(u32 *const clkctrl_addr, u32 enable_mode, + u32 wait_for_enable) +{ + clrsetbits_le32(clkctrl_addr, MODULE_CLKCTRL_MODULEMODE_MASK, + enable_mode << MODULE_CLKCTRL_MODULEMODE_SHIFT); + debug("Enable clock module - %p\n", clkctrl_addr); + if (wait_for_enable) + wait_for_clk_enable(clkctrl_addr); +} + +static inline void wait_for_clk_disable(u32 *clkctrl_addr) +{ + u32 clkctrl, idlest = MODULE_CLKCTRL_IDLEST_FULLY_FUNCTIONAL; + u32 bound = LDELAY; + + while ((idlest != MODULE_CLKCTRL_IDLEST_DISABLED)) { + clkctrl = readl(clkctrl_addr); + idlest = (clkctrl & MODULE_CLKCTRL_IDLEST_MASK) >> + MODULE_CLKCTRL_IDLEST_SHIFT; + if (--bound == 0) { + printf("Clock disable failed for 0x%p idlest 0x%x\n", + clkctrl_addr, clkctrl); + return; + } + } +} +static inline void disable_clock_module(u32 *const clkctrl_addr, + u32 wait_for_disable) +{ + clrsetbits_le32(clkctrl_addr, MODULE_CLKCTRL_MODULEMODE_MASK, + MODULE_CLKCTRL_MODULEMODE_SW_DISABLE << + MODULE_CLKCTRL_MODULEMODE_SHIFT); + debug("Disable clock module - %p\n", clkctrl_addr); + if (wait_for_disable) + wait_for_clk_disable(clkctrl_addr); +} + +static inline void enable_clock_domain(u32 *const clkctrl_reg, u32 enable_mode) +{ + clrsetbits_le32(clkctrl_reg, CD_CLKCTRL_CLKTRCTRL_MASK, + enable_mode << CD_CLKCTRL_CLKTRCTRL_SHIFT); + debug("Enable clock domain - %p\n", clkctrl_reg); +} + +static inline void disable_clock_domain(u32 *const clkctrl_reg) +{ + clrsetbits_le32(clkctrl_reg, CD_CLKCTRL_CLKTRCTRL_MASK, + CD_CLKCTRL_CLKTRCTRL_SW_SLEEP << + CD_CLKCTRL_CLKTRCTRL_SHIFT); + debug("Disable clock domain - %p\n", clkctrl_reg); +} + +void do_enable_clocks(u32 *const *clk_domains, + u32 *const *clk_modules_explicit_en, u8 wait_for_enable) +{ + u32 i, max = 100; + + /* Put the clock domains in SW_WKUP mode */ + for (i = 0; (i < max) && clk_domains[i]; i++) { + enable_clock_domain(clk_domains[i], + CD_CLKCTRL_CLKTRCTRL_SW_WKUP); + } + + /* Clock modules that need to be put in SW_EXPLICIT_EN mode */ + for (i = 0; (i < max) && clk_modules_explicit_en[i]; i++) { + enable_clock_module(clk_modules_explicit_en[i], + MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN, + wait_for_enable); + }; +} + +void do_disable_clocks(u32 *const *clk_domains, + u32 *const *clk_modules_disable, + u8 wait_for_disable) +{ + u32 i, max = 100; + + + /* Clock modules that need to be put in SW_DISABLE */ + for (i = 0; (i < max) && clk_modules_disable[i]; i++) + disable_clock_module(clk_modules_disable[i], + wait_for_disable); + + /* Put the clock domains in SW_SLEEP mode */ + for (i = 0; (i < max) && clk_domains[i]; i++) + disable_clock_domain(clk_domains[i]); +} + +/* + * Before scaling up the clocks we need to have the PMIC scale up the + * voltages first. This will be dependent on which PMIC is in use + * and in some cases we may not be scaling things up at all and thus not + * need to do anything here. + */ +__weak void scale_vcores(void) +{ +} + +void setup_early_clocks(void) +{ + setup_clocks_for_console(); + enable_basic_clocks(); + timer_init(); +} + +void prcm_init(void) +{ + scale_vcores(); + setup_dplls(); +} diff --git a/arch/arm/mach-omap2/am33xx/clock_am33xx.c b/arch/arm/mach-omap2/am33xx/clock_am33xx.c new file mode 100644 index 0000000000..7b841b2d55 --- /dev/null +++ b/arch/arm/mach-omap2/am33xx/clock_am33xx.c @@ -0,0 +1,234 @@ +/* + * clock_am33xx.c + * + * clocks for AM33XX based boards + * + * Copyright (C) 2013, Texas Instruments, Incorporated - http://www.ti.com/ + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include + +#define OSC (V_OSCK/1000000) + +struct cm_perpll *const cmper = (struct cm_perpll *)CM_PER; +struct cm_wkuppll *const cmwkup = (struct cm_wkuppll *)CM_WKUP; +struct cm_dpll *const cmdpll = (struct cm_dpll *)CM_DPLL; +struct cm_rtc *const cmrtc = (struct cm_rtc *)CM_RTC; + +const struct dpll_regs dpll_mpu_regs = { + .cm_clkmode_dpll = CM_WKUP + 0x88, + .cm_idlest_dpll = CM_WKUP + 0x20, + .cm_clksel_dpll = CM_WKUP + 0x2C, + .cm_div_m2_dpll = CM_WKUP + 0xA8, +}; + +const struct dpll_regs dpll_core_regs = { + .cm_clkmode_dpll = CM_WKUP + 0x90, + .cm_idlest_dpll = CM_WKUP + 0x5C, + .cm_clksel_dpll = CM_WKUP + 0x68, + .cm_div_m4_dpll = CM_WKUP + 0x80, + .cm_div_m5_dpll = CM_WKUP + 0x84, + .cm_div_m6_dpll = CM_WKUP + 0xD8, +}; + +const struct dpll_regs dpll_per_regs = { + .cm_clkmode_dpll = CM_WKUP + 0x8C, + .cm_idlest_dpll = CM_WKUP + 0x70, + .cm_clksel_dpll = CM_WKUP + 0x9C, + .cm_div_m2_dpll = CM_WKUP + 0xAC, +}; + +const struct dpll_regs dpll_ddr_regs = { + .cm_clkmode_dpll = CM_WKUP + 0x94, + .cm_idlest_dpll = CM_WKUP + 0x34, + .cm_clksel_dpll = CM_WKUP + 0x40, + .cm_div_m2_dpll = CM_WKUP + 0xA0, +}; + +struct dpll_params dpll_mpu_opp100 = { + CONFIG_SYS_MPUCLK, OSC-1, 1, -1, -1, -1, -1}; +const struct dpll_params dpll_core_opp100 = { + 1000, OSC-1, -1, -1, 10, 8, 4}; +const struct dpll_params dpll_mpu = { + MPUPLL_M_300, OSC-1, 1, -1, -1, -1, -1}; +const struct dpll_params dpll_core = { + 50, OSC-1, -1, -1, 1, 1, 1}; +const struct dpll_params dpll_per = { + 960, OSC-1, 5, -1, -1, -1, -1}; + +const struct dpll_params *get_dpll_mpu_params(void) +{ + return &dpll_mpu; +} + +const struct dpll_params *get_dpll_core_params(void) +{ + return &dpll_core; +} + +const struct dpll_params *get_dpll_per_params(void) +{ + return &dpll_per; +} + +void setup_clocks_for_console(void) +{ + clrsetbits_le32(&cmwkup->wkclkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK, + CD_CLKCTRL_CLKTRCTRL_SW_WKUP << + CD_CLKCTRL_CLKTRCTRL_SHIFT); + + clrsetbits_le32(&cmper->l4hsclkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK, + CD_CLKCTRL_CLKTRCTRL_SW_WKUP << + CD_CLKCTRL_CLKTRCTRL_SHIFT); + + clrsetbits_le32(&cmwkup->wkup_uart0ctrl, + MODULE_CLKCTRL_MODULEMODE_MASK, + MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN << + MODULE_CLKCTRL_MODULEMODE_SHIFT); + clrsetbits_le32(&cmper->uart1clkctrl, + MODULE_CLKCTRL_MODULEMODE_MASK, + MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN << + MODULE_CLKCTRL_MODULEMODE_SHIFT); + clrsetbits_le32(&cmper->uart2clkctrl, + MODULE_CLKCTRL_MODULEMODE_MASK, + MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN << + MODULE_CLKCTRL_MODULEMODE_SHIFT); + clrsetbits_le32(&cmper->uart3clkctrl, + MODULE_CLKCTRL_MODULEMODE_MASK, + MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN << + MODULE_CLKCTRL_MODULEMODE_SHIFT); + clrsetbits_le32(&cmper->uart4clkctrl, + MODULE_CLKCTRL_MODULEMODE_MASK, + MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN << + MODULE_CLKCTRL_MODULEMODE_SHIFT); + clrsetbits_le32(&cmper->uart5clkctrl, + MODULE_CLKCTRL_MODULEMODE_MASK, + MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN << + MODULE_CLKCTRL_MODULEMODE_SHIFT); +} + +void enable_basic_clocks(void) +{ + u32 *const clk_domains[] = { + &cmper->l3clkstctrl, + &cmper->l4fwclkstctrl, + &cmper->l3sclkstctrl, + &cmper->l4lsclkstctrl, + &cmwkup->wkclkstctrl, + &cmper->emiffwclkctrl, + &cmrtc->clkstctrl, + 0 + }; + + u32 *const clk_modules_explicit_en[] = { + &cmper->l3clkctrl, + &cmper->l4lsclkctrl, + &cmper->l4fwclkctrl, + &cmwkup->wkl4wkclkctrl, + &cmper->l3instrclkctrl, + &cmper->l4hsclkctrl, + &cmwkup->wkgpio0clkctrl, + &cmwkup->wkctrlclkctrl, + &cmper->timer2clkctrl, + &cmper->gpmcclkctrl, + &cmper->elmclkctrl, + &cmper->mmc0clkctrl, + &cmper->mmc1clkctrl, + &cmwkup->wkup_i2c0ctrl, + &cmper->gpio1clkctrl, + &cmper->gpio2clkctrl, + &cmper->gpio3clkctrl, + &cmper->i2c1clkctrl, + &cmper->cpgmac0clkctrl, + &cmper->spi0clkctrl, + &cmrtc->rtcclkctrl, + &cmper->usb0clkctrl, + &cmper->emiffwclkctrl, + &cmper->emifclkctrl, + 0 + }; + + do_enable_clocks(clk_domains, clk_modules_explicit_en, 1); + + /* Select the Master osc 24 MHZ as Timer2 clock source */ + writel(0x1, &cmdpll->clktimer2clk); +} + +/* + * Enable Spread Spectrum for the MPU by calculating the required + * values and setting the registers accordingly. + * @param permille The spreading in permille (10th of a percent) + */ +void set_mpu_spreadspectrum(int permille) +{ + u32 multiplier_m; + u32 predivider_n; + u32 cm_clksel_dpll_mpu; + u32 cm_clkmode_dpll_mpu; + u32 ref_clock; + u32 pll_bandwidth; + u32 mod_freq_divider; + u32 exponent; + u32 mantissa; + u32 delta_m_step; + + printf("Enabling Spread Spectrum of %d permille for MPU\n", + permille); + + /* Read PLL parameter m and n */ + cm_clksel_dpll_mpu = readl(&cmwkup->clkseldpllmpu); + multiplier_m = (cm_clksel_dpll_mpu >> 8) & 0x3FF; + predivider_n = cm_clksel_dpll_mpu & 0x7F; + + /* + * Calculate reference clock (clock after pre-divider), + * its max. PLL bandwidth, + * and resulting mod_freq_divider + */ + ref_clock = V_OSCK / (predivider_n + 1); + pll_bandwidth = ref_clock / 70; + mod_freq_divider = ref_clock / (4 * pll_bandwidth); + + /* Calculate Mantissa/Exponent */ + exponent = 0; + mantissa = mod_freq_divider; + while ((mantissa > 127) && (exponent < 7)) { + exponent++; + mantissa /= 2; + } + if (mantissa > 127) + mantissa = 127; + + mod_freq_divider = mantissa << exponent; + + /* + * Calculate Modulation steps + * As we use Downspread only, the spread is twice the value of + * permille, so Div2! + * As it takes the value in percent, divide by ten! + */ + delta_m_step = ((u32)((multiplier_m * permille) / 10 / 2)) << 18; + delta_m_step /= 100; + delta_m_step /= mod_freq_divider; + if (delta_m_step > 0xFFFFF) + delta_m_step = 0xFFFFF; + + /* Setup Spread Spectrum */ + writel(delta_m_step, &cmwkup->sscdeltamstepdllmpu); + writel((exponent << 8) | mantissa, &cmwkup->sscmodfreqdivdpllmpu); + cm_clkmode_dpll_mpu = readl(&cmwkup->clkmoddpllmpu); + /* clear all SSC flags */ + cm_clkmode_dpll_mpu &= ~(0xF << CM_CLKMODE_DPLL_SSC_EN_SHIFT); + /* enable SSC with Downspread only */ + cm_clkmode_dpll_mpu |= CM_CLKMODE_DPLL_SSC_EN_MASK | + CM_CLKMODE_DPLL_SSC_DOWNSPREAD_MASK; + writel(cm_clkmode_dpll_mpu, &cmwkup->clkmoddpllmpu); + while (!(readl(&cmwkup->clkmoddpllmpu) & 0x2000)) + ; +} diff --git a/arch/arm/mach-omap2/am33xx/clock_am43xx.c b/arch/arm/mach-omap2/am33xx/clock_am43xx.c new file mode 100644 index 0000000000..73ea955a6c --- /dev/null +++ b/arch/arm/mach-omap2/am33xx/clock_am43xx.c @@ -0,0 +1,231 @@ +/* + * clock_am43xx.c + * + * clocks for AM43XX based boards + * Derived from AM33XX based boards + * + * Copyright (C) 2013, Texas Instruments, Incorporated - http://www.ti.com/ + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include + +struct cm_perpll *const cmper = (struct cm_perpll *)CM_PER; +struct cm_wkuppll *const cmwkup = (struct cm_wkuppll *)CM_WKUP; +struct cm_dpll *const cmdpll = (struct cm_dpll *)CM_DPLL; + +const struct dpll_regs dpll_mpu_regs = { + .cm_clkmode_dpll = CM_WKUP + 0x560, + .cm_idlest_dpll = CM_WKUP + 0x564, + .cm_clksel_dpll = CM_WKUP + 0x56c, + .cm_div_m2_dpll = CM_WKUP + 0x570, +}; + +const struct dpll_regs dpll_core_regs = { + .cm_clkmode_dpll = CM_WKUP + 0x520, + .cm_idlest_dpll = CM_WKUP + 0x524, + .cm_clksel_dpll = CM_WKUP + 0x52C, + .cm_div_m4_dpll = CM_WKUP + 0x538, + .cm_div_m5_dpll = CM_WKUP + 0x53C, + .cm_div_m6_dpll = CM_WKUP + 0x540, +}; + +const struct dpll_regs dpll_per_regs = { + .cm_clkmode_dpll = CM_WKUP + 0x5E0, + .cm_idlest_dpll = CM_WKUP + 0x5E4, + .cm_clksel_dpll = CM_WKUP + 0x5EC, + .cm_div_m2_dpll = CM_WKUP + 0x5F0, +}; + +const struct dpll_regs dpll_ddr_regs = { + .cm_clkmode_dpll = CM_WKUP + 0x5A0, + .cm_idlest_dpll = CM_WKUP + 0x5A4, + .cm_clksel_dpll = CM_WKUP + 0x5AC, + .cm_div_m2_dpll = CM_WKUP + 0x5B0, + .cm_div_m4_dpll = CM_WKUP + 0x5B8, +}; + +void setup_clocks_for_console(void) +{ + u32 clkctrl, idlest = MODULE_CLKCTRL_IDLEST_DISABLED; + + /* Do not add any spl_debug prints in this function */ + clrsetbits_le32(&cmwkup->wkclkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK, + CD_CLKCTRL_CLKTRCTRL_SW_WKUP << + CD_CLKCTRL_CLKTRCTRL_SHIFT); + + /* Enable UART0 */ + clrsetbits_le32(&cmwkup->wkup_uart0ctrl, + MODULE_CLKCTRL_MODULEMODE_MASK, + MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN << + MODULE_CLKCTRL_MODULEMODE_SHIFT); + + while ((idlest == MODULE_CLKCTRL_IDLEST_DISABLED) || + (idlest == MODULE_CLKCTRL_IDLEST_TRANSITIONING)) { + clkctrl = readl(&cmwkup->wkup_uart0ctrl); + idlest = (clkctrl & MODULE_CLKCTRL_IDLEST_MASK) >> + MODULE_CLKCTRL_IDLEST_SHIFT; + } +} + +void enable_basic_clocks(void) +{ + u32 *const clk_domains[] = { + &cmper->l3clkstctrl, + &cmper->l3sclkstctrl, + &cmper->l4lsclkstctrl, + &cmwkup->wkclkstctrl, + &cmper->emifclkstctrl, + 0 + }; + + u32 *const clk_modules_explicit_en[] = { + &cmper->l3clkctrl, + &cmper->l4lsclkctrl, + &cmper->l4fwclkctrl, + &cmwkup->wkl4wkclkctrl, + &cmper->l3instrclkctrl, + &cmper->l4hsclkctrl, + &cmwkup->wkgpio0clkctrl, + &cmwkup->wkctrlclkctrl, + &cmper->timer2clkctrl, + &cmper->gpmcclkctrl, + &cmper->elmclkctrl, + &cmper->mmc0clkctrl, + &cmper->mmc1clkctrl, + &cmwkup->wkup_i2c0ctrl, + &cmper->gpio1clkctrl, + &cmper->gpio2clkctrl, + &cmper->gpio3clkctrl, + &cmper->gpio4clkctrl, + &cmper->gpio5clkctrl, + &cmper->i2c1clkctrl, + &cmper->cpgmac0clkctrl, + &cmper->emiffwclkctrl, + &cmper->emifclkctrl, + &cmper->otfaemifclkctrl, + &cmper->qspiclkctrl, + &cmper->spi0clkctrl, + 0 + }; + + do_enable_clocks(clk_domains, clk_modules_explicit_en, 1); + + /* Select the Master osc clk as Timer2 clock source */ + writel(0x1, &cmdpll->clktimer2clk); + + /* For OPP100 the mac clock should be /5. */ + writel(0x4, &cmdpll->clkselmacclk); +} + +#ifdef CONFIG_TI_EDMA3 +void enable_edma3_clocks(void) +{ + u32 *const clk_domains_edma3[] = { + 0 + }; + + u32 *const clk_modules_explicit_en_edma3[] = { + &cmper->tpccclkctrl, + &cmper->tptc0clkctrl, + 0 + }; + + do_enable_clocks(clk_domains_edma3, + clk_modules_explicit_en_edma3, + 1); +} + +void disable_edma3_clocks(void) +{ + u32 *const clk_domains_edma3[] = { + 0 + }; + + u32 *const clk_modules_disable_edma3[] = { + &cmper->tpccclkctrl, + &cmper->tptc0clkctrl, + 0 + }; + + do_disable_clocks(clk_domains_edma3, + clk_modules_disable_edma3, + 1); +} +#endif + +#if defined(CONFIG_USB_DWC3) || defined(CONFIG_USB_XHCI_OMAP) +void enable_usb_clocks(int index) +{ + u32 *usbclkctrl = 0; + u32 *usbphyocp2scpclkctrl = 0; + + if (index == 0) { + usbclkctrl = &cmper->usb0clkctrl; + usbphyocp2scpclkctrl = &cmper->usbphyocp2scp0clkctrl; + setbits_le32(&cmper->usb0clkctrl, + USBOTGSSX_CLKCTRL_OPTFCLKEN_REFCLK960); + setbits_le32(&cmwkup->usbphy0clkctrl, + USBPHY0_CLKCTRL_OPTFCLKEN_CLK32K); + } else if (index == 1) { + usbclkctrl = &cmper->usb1clkctrl; + usbphyocp2scpclkctrl = &cmper->usbphyocp2scp1clkctrl; + setbits_le32(&cmper->usb1clkctrl, + USBOTGSSX_CLKCTRL_OPTFCLKEN_REFCLK960); + setbits_le32(&cmwkup->usbphy1clkctrl, + USBPHY0_CLKCTRL_OPTFCLKEN_CLK32K); + } + + u32 *const clk_domains_usb[] = { + 0 + }; + + u32 *const clk_modules_explicit_en_usb[] = { + usbclkctrl, + usbphyocp2scpclkctrl, + 0 + }; + + do_enable_clocks(clk_domains_usb, clk_modules_explicit_en_usb, 1); +} + +void disable_usb_clocks(int index) +{ + u32 *usbclkctrl = 0; + u32 *usbphyocp2scpclkctrl = 0; + + if (index == 0) { + usbclkctrl = &cmper->usb0clkctrl; + usbphyocp2scpclkctrl = &cmper->usbphyocp2scp0clkctrl; + clrbits_le32(&cmper->usb0clkctrl, + USBOTGSSX_CLKCTRL_OPTFCLKEN_REFCLK960); + clrbits_le32(&cmwkup->usbphy0clkctrl, + USBPHY0_CLKCTRL_OPTFCLKEN_CLK32K); + } else if (index == 1) { + usbclkctrl = &cmper->usb1clkctrl; + usbphyocp2scpclkctrl = &cmper->usbphyocp2scp1clkctrl; + clrbits_le32(&cmper->usb1clkctrl, + USBOTGSSX_CLKCTRL_OPTFCLKEN_REFCLK960); + clrbits_le32(&cmwkup->usbphy1clkctrl, + USBPHY0_CLKCTRL_OPTFCLKEN_CLK32K); + } + + u32 *const clk_domains_usb[] = { + 0 + }; + + u32 *const clk_modules_disable_usb[] = { + usbclkctrl, + usbphyocp2scpclkctrl, + 0 + }; + + do_disable_clocks(clk_domains_usb, clk_modules_disable_usb, 1); +} +#endif diff --git a/arch/arm/mach-omap2/am33xx/clock_ti814x.c b/arch/arm/mach-omap2/am33xx/clock_ti814x.c new file mode 100644 index 0000000000..50bd631cf6 --- /dev/null +++ b/arch/arm/mach-omap2/am33xx/clock_ti814x.c @@ -0,0 +1,410 @@ +/* + * clock_ti814x.c + * + * Clocks for TI814X based boards + * + * Copyright (C) 2013, Texas Instruments, Incorporated + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include + +/* PRCM */ +#define PRCM_MOD_EN 0x2 + +/* CLK_SRC */ +#define OSC_SRC0 0 +#define OSC_SRC1 1 + +#define L3_OSC_SRC OSC_SRC0 + +#define OSC_0_FREQ 20 + +#define DCO_HS2_MIN 500 +#define DCO_HS2_MAX 1000 +#define DCO_HS1_MIN 1000 +#define DCO_HS1_MAX 2000 + +#define SELFREQDCO_HS2 0x00000801 +#define SELFREQDCO_HS1 0x00001001 + +#define MPU_N 0x1 +#define MPU_M 0x3C +#define MPU_M2 1 +#define MPU_CLKCTRL 0x1 + +#define L3_N 19 +#define L3_M 880 +#define L3_M2 4 +#define L3_CLKCTRL 0x801 + +#define DDR_N 19 +#define DDR_M 666 +#define DDR_M2 2 +#define DDR_CLKCTRL 0x801 + +/* ADPLLJ register values */ +#define ADPLLJ_CLKCTRL_HS2 0x00000801 /* HS2 mode, TINT2 = 1 */ +#define ADPLLJ_CLKCTRL_HS1 0x00001001 /* HS1 mode, TINT2 = 1 */ +#define ADPLLJ_CLKCTRL_CLKDCOLDOEN (1 << 29) +#define ADPLLJ_CLKCTRL_IDLE (1 << 23) +#define ADPLLJ_CLKCTRL_CLKOUTEN (1 << 20) +#define ADPLLJ_CLKCTRL_CLKOUTLDOEN (1 << 19) +#define ADPLLJ_CLKCTRL_CLKDCOLDOPWDNZ (1 << 17) +#define ADPLLJ_CLKCTRL_LPMODE (1 << 12) +#define ADPLLJ_CLKCTRL_DRIFTGUARDIAN (1 << 11) +#define ADPLLJ_CLKCTRL_REGM4XEN (1 << 10) +#define ADPLLJ_CLKCTRL_TINITZ (1 << 0) +#define ADPLLJ_CLKCTRL_CLKDCO (ADPLLJ_CLKCTRL_CLKDCOLDOEN | \ + ADPLLJ_CLKCTRL_CLKOUTEN | \ + ADPLLJ_CLKCTRL_CLKOUTLDOEN | \ + ADPLLJ_CLKCTRL_CLKDCOLDOPWDNZ) + +#define ADPLLJ_STATUS_PHASELOCK (1 << 10) +#define ADPLLJ_STATUS_FREQLOCK (1 << 9) +#define ADPLLJ_STATUS_PHSFRQLOCK (ADPLLJ_STATUS_PHASELOCK | \ + ADPLLJ_STATUS_FREQLOCK) +#define ADPLLJ_STATUS_BYPASSACK (1 << 8) +#define ADPLLJ_STATUS_BYPASS (1 << 0) +#define ADPLLJ_STATUS_BYPASSANDACK (ADPLLJ_STATUS_BYPASSACK | \ + ADPLLJ_STATUS_BYPASS) + +#define ADPLLJ_TENABLE_ENB (1 << 0) +#define ADPLLJ_TENABLEDIV_ENB (1 << 0) + +#define ADPLLJ_M2NDIV_M2SHIFT 16 + +#define MPU_PLL_BASE (PLL_SUBSYS_BASE + 0x048) +#define L3_PLL_BASE (PLL_SUBSYS_BASE + 0x110) +#define DDR_PLL_BASE (PLL_SUBSYS_BASE + 0x290) + +struct ad_pll { + unsigned int pwrctrl; + unsigned int clkctrl; + unsigned int tenable; + unsigned int tenablediv; + unsigned int m2ndiv; + unsigned int mn2div; + unsigned int fracdiv; + unsigned int bwctrl; + unsigned int fracctrl; + unsigned int status; + unsigned int m3div; + unsigned int rampctrl; +}; + +#define OSC_SRC_CTRL (PLL_SUBSYS_BASE + 0x2C0) + +#define ENET_CLKCTRL_CMPL 0x30000 + +#define SATA_PLL_BASE (CTRL_BASE + 0x0720) + +struct sata_pll { + unsigned int pllcfg0; + unsigned int pllcfg1; + unsigned int pllcfg2; + unsigned int pllcfg3; + unsigned int pllcfg4; + unsigned int pllstatus; + unsigned int rxstatus; + unsigned int txstatus; + unsigned int testcfg; +}; + +#define SEL_IN_FREQ (0x1 << 31) +#define DIGCLRZ (0x1 << 30) +#define ENDIGLDO (0x1 << 4) +#define APLL_CP_CURR (0x1 << 3) +#define ENBGSC_REF (0x1 << 2) +#define ENPLLLDO (0x1 << 1) +#define ENPLL (0x1 << 0) + +#define SATA_PLLCFG0_1 (SEL_IN_FREQ | ENBGSC_REF) +#define SATA_PLLCFG0_2 (SEL_IN_FREQ | ENDIGLDO | ENBGSC_REF) +#define SATA_PLLCFG0_3 (SEL_IN_FREQ | ENDIGLDO | ENBGSC_REF | ENPLLLDO) +#define SATA_PLLCFG0_4 (SEL_IN_FREQ | DIGCLRZ | ENDIGLDO | ENBGSC_REF | \ + ENPLLLDO | ENPLL) + +#define PLL_LOCK (0x1 << 0) + +#define ENSATAMODE (0x1 << 31) +#define PLLREFSEL (0x1 << 30) +#define MDIVINT (0x4b << 18) +#define EN_CLKAUX (0x1 << 5) +#define EN_CLK125M (0x1 << 4) +#define EN_CLK100M (0x1 << 3) +#define EN_CLK50M (0x1 << 2) + +#define SATA_PLLCFG1 (ENSATAMODE | \ + PLLREFSEL | \ + MDIVINT | \ + EN_CLKAUX | \ + EN_CLK125M | \ + EN_CLK100M | \ + EN_CLK50M) + +#define DIGLDO_EN_CAPLESSMODE (0x1 << 22) +#define PLLDO_EN_LDO_STABLE (0x1 << 11) +#define PLLDO_EN_BUF_CUR (0x1 << 7) +#define PLLDO_EN_LP (0x1 << 6) +#define PLLDO_CTRL_TRIM_1_4V (0x10 << 1) + +#define SATA_PLLCFG3 (DIGLDO_EN_CAPLESSMODE | \ + PLLDO_EN_LDO_STABLE | \ + PLLDO_EN_BUF_CUR | \ + PLLDO_EN_LP | \ + PLLDO_CTRL_TRIM_1_4V) + +const struct cm_alwon *cmalwon = (struct cm_alwon *)CM_ALWON_BASE; +const struct cm_def *cmdef = (struct cm_def *)CM_DEFAULT_BASE; +const struct sata_pll *spll = (struct sata_pll *)SATA_PLL_BASE; + +/* + * Enable the peripheral clock for required peripherals + */ +static void enable_per_clocks(void) +{ + /* HSMMC1 */ + writel(PRCM_MOD_EN, &cmalwon->mmchs1clkctrl); + while (readl(&cmalwon->mmchs1clkctrl) != PRCM_MOD_EN) + ; + + /* Ethernet */ + writel(PRCM_MOD_EN, &cmalwon->ethclkstctrl); + writel(PRCM_MOD_EN, &cmalwon->ethernet0clkctrl); + while ((readl(&cmalwon->ethernet0clkctrl) & ENET_CLKCTRL_CMPL) != 0) + ; + writel(PRCM_MOD_EN, &cmalwon->ethernet1clkctrl); + while ((readl(&cmalwon->ethernet1clkctrl) & ENET_CLKCTRL_CMPL) != 0) + ; + + /* RTC clocks */ + writel(PRCM_MOD_EN, &cmalwon->rtcclkstctrl); + writel(PRCM_MOD_EN, &cmalwon->rtcclkctrl); + while (readl(&cmalwon->rtcclkctrl) != PRCM_MOD_EN) + ; +} + +/* + * select the HS1 or HS2 for DCO Freq + * return : CLKCTRL + */ +static u32 pll_dco_freq_sel(u32 clkout_dco) +{ + if (clkout_dco >= DCO_HS2_MIN && clkout_dco < DCO_HS2_MAX) + return SELFREQDCO_HS2; + else if (clkout_dco >= DCO_HS1_MIN && clkout_dco < DCO_HS1_MAX) + return SELFREQDCO_HS1; + else + return -1; +} + +/* + * select the sigma delta config + * return: sigma delta val + */ +static u32 pll_sigma_delta_val(u32 clkout_dco) +{ + u32 sig_val = 0; + + sig_val = (clkout_dco + 225) / 250; + sig_val = sig_val << 24; + + return sig_val; +} + +/* + * configure individual ADPLLJ + */ +static void pll_config(u32 base, u32 n, u32 m, u32 m2, + u32 clkctrl_val, int adpllj) +{ + const struct ad_pll *adpll = (struct ad_pll *)base; + u32 m2nval, mn2val, read_clkctrl = 0, clkout_dco = 0; + u32 sig_val = 0, hs_mod = 0; + + m2nval = (m2 << ADPLLJ_M2NDIV_M2SHIFT) | n; + mn2val = m; + + /* calculate clkout_dco */ + clkout_dco = ((OSC_0_FREQ / (n+1)) * m); + + /* sigma delta & Hs mode selection skip for ADPLLS*/ + if (adpllj) { + sig_val = pll_sigma_delta_val(clkout_dco); + hs_mod = pll_dco_freq_sel(clkout_dco); + } + + /* by-pass pll */ + read_clkctrl = readl(&adpll->clkctrl); + writel((read_clkctrl | ADPLLJ_CLKCTRL_IDLE), &adpll->clkctrl); + while ((readl(&adpll->status) & ADPLLJ_STATUS_BYPASSANDACK) + != ADPLLJ_STATUS_BYPASSANDACK) + ; + + /* clear TINITZ */ + read_clkctrl = readl(&adpll->clkctrl); + writel((read_clkctrl & ~ADPLLJ_CLKCTRL_TINITZ), &adpll->clkctrl); + + /* + * ref_clk = 20/(n + 1); + * clkout_dco = ref_clk * m; + * clk_out = clkout_dco/m2; + */ + read_clkctrl = readl(&adpll->clkctrl) & + ~(ADPLLJ_CLKCTRL_LPMODE | + ADPLLJ_CLKCTRL_DRIFTGUARDIAN | + ADPLLJ_CLKCTRL_REGM4XEN); + writel(m2nval, &adpll->m2ndiv); + writel(mn2val, &adpll->mn2div); + + /* Skip for modena(ADPLLS) */ + if (adpllj) { + writel(sig_val, &adpll->fracdiv); + writel((read_clkctrl | hs_mod), &adpll->clkctrl); + } + + /* Load M2, N2 dividers of ADPLL */ + writel(ADPLLJ_TENABLEDIV_ENB, &adpll->tenablediv); + writel(~ADPLLJ_TENABLEDIV_ENB, &adpll->tenablediv); + + /* Load M, N dividers of ADPLL */ + writel(ADPLLJ_TENABLE_ENB, &adpll->tenable); + writel(~ADPLLJ_TENABLE_ENB, &adpll->tenable); + + /* Configure CLKDCOLDOEN,CLKOUTLDOEN,CLKOUT Enable BITS */ + read_clkctrl = readl(&adpll->clkctrl) & ~ADPLLJ_CLKCTRL_CLKDCO; + if (adpllj) + writel((read_clkctrl | ADPLLJ_CLKCTRL_CLKDCO), + &adpll->clkctrl); + + /* Enable TINTZ and disable IDLE(PLL in Active & Locked Mode */ + read_clkctrl = readl(&adpll->clkctrl) & ~ADPLLJ_CLKCTRL_IDLE; + writel((read_clkctrl | ADPLLJ_CLKCTRL_TINITZ), &adpll->clkctrl); + + /* Wait for phase and freq lock */ + while ((readl(&adpll->status) & ADPLLJ_STATUS_PHSFRQLOCK) != + ADPLLJ_STATUS_PHSFRQLOCK) + ; +} + +static void unlock_pll_control_mmr(void) +{ + /* TRM 2.10.1.4 and 3.2.7-3.2.11 */ + writel(0x1EDA4C3D, 0x481C5040); + writel(0x2FF1AC2B, 0x48140060); + writel(0xF757FDC0, 0x48140064); + writel(0xE2BC3A6D, 0x48140068); + writel(0x1EBF131D, 0x4814006c); + writel(0x6F361E05, 0x48140070); +} + +static void mpu_pll_config(void) +{ + pll_config(MPU_PLL_BASE, MPU_N, MPU_M, MPU_M2, MPU_CLKCTRL, 0); +} + +static void l3_pll_config(void) +{ + u32 l3_osc_src, rd_osc_src = 0; + + l3_osc_src = L3_OSC_SRC; + rd_osc_src = readl(OSC_SRC_CTRL); + + if (OSC_SRC0 == l3_osc_src) + writel((rd_osc_src & 0xfffffffe)|0x0, OSC_SRC_CTRL); + else + writel((rd_osc_src & 0xfffffffe)|0x1, OSC_SRC_CTRL); + + pll_config(L3_PLL_BASE, L3_N, L3_M, L3_M2, L3_CLKCTRL, 1); +} + +void ddr_pll_config(unsigned int ddrpll_m) +{ + pll_config(DDR_PLL_BASE, DDR_N, DDR_M, DDR_M2, DDR_CLKCTRL, 1); +} + +void sata_pll_config(void) +{ + /* + * This sequence for configuring the SATA PLL + * resident in the control module is documented + * in TI8148 TRM section 21.3.1 + */ + writel(SATA_PLLCFG1, &spll->pllcfg1); + udelay(50); + + writel(SATA_PLLCFG3, &spll->pllcfg3); + udelay(50); + + writel(SATA_PLLCFG0_1, &spll->pllcfg0); + udelay(50); + + writel(SATA_PLLCFG0_2, &spll->pllcfg0); + udelay(50); + + writel(SATA_PLLCFG0_3, &spll->pllcfg0); + udelay(50); + + writel(SATA_PLLCFG0_4, &spll->pllcfg0); + udelay(50); + + while (((readl(&spll->pllstatus) & PLL_LOCK) == 0)) + ; +} + +void enable_dmm_clocks(void) +{ + writel(PRCM_MOD_EN, &cmdef->fwclkctrl); + writel(PRCM_MOD_EN, &cmdef->l3fastclkstctrl); + writel(PRCM_MOD_EN, &cmdef->emif0clkctrl); + while ((readl(&cmdef->emif0clkctrl)) != PRCM_MOD_EN) + ; + writel(PRCM_MOD_EN, &cmdef->emif1clkctrl); + while ((readl(&cmdef->emif1clkctrl)) != PRCM_MOD_EN) + ; + while ((readl(&cmdef->l3fastclkstctrl) & 0x300) != 0x300) + ; + writel(PRCM_MOD_EN, &cmdef->dmmclkctrl); + while ((readl(&cmdef->dmmclkctrl)) != PRCM_MOD_EN) + ; + writel(PRCM_MOD_EN, &cmalwon->l3slowclkstctrl); + while ((readl(&cmalwon->l3slowclkstctrl) & 0x2100) != 0x2100) + ; +} + +void setup_clocks_for_console(void) +{ + unlock_pll_control_mmr(); + /* UART0 */ + writel(PRCM_MOD_EN, &cmalwon->uart0clkctrl); + while (readl(&cmalwon->uart0clkctrl) != PRCM_MOD_EN) + ; +} + +void setup_early_clocks(void) +{ + setup_clocks_for_console(); +} + +/* + * Configure the PLL/PRCM for necessary peripherals + */ +void prcm_init(void) +{ + /* Enable the control module */ + writel(PRCM_MOD_EN, &cmalwon->controlclkctrl); + + /* Configure PLLs */ + mpu_pll_config(); + l3_pll_config(); + sata_pll_config(); + + /* Enable the required peripherals */ + enable_per_clocks(); +} diff --git a/arch/arm/mach-omap2/am33xx/clock_ti816x.c b/arch/arm/mach-omap2/am33xx/clock_ti816x.c new file mode 100644 index 0000000000..079ddd7eb9 --- /dev/null +++ b/arch/arm/mach-omap2/am33xx/clock_ti816x.c @@ -0,0 +1,450 @@ +/* + * clock_ti816x.c + * + * Clocks for TI816X based boards + * + * Copyright (C) 2013, Adeneo Embedded + * Antoine Tenart, + * + * Based on TI-PSP-04.00.02.14 : + * + * Copyright (C) 2009, Texas Instruments, Incorporated + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR /PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include + +#include + +#define CM_PLL_BASE (CTRL_BASE + 0x0400) + +/* Main PLL */ +#define MAIN_N 64 +#define MAIN_P 0x1 +#define MAIN_INTFREQ1 0x8 +#define MAIN_FRACFREQ1 0x800000 +#define MAIN_MDIV1 0x2 +#define MAIN_INTFREQ2 0xE +#define MAIN_FRACFREQ2 0x0 +#define MAIN_MDIV2 0x1 +#define MAIN_INTFREQ3 0x8 +#define MAIN_FRACFREQ3 0xAAAAB0 +#define MAIN_MDIV3 0x3 +#define MAIN_INTFREQ4 0x9 +#define MAIN_FRACFREQ4 0x55554F +#define MAIN_MDIV4 0x3 +#define MAIN_INTFREQ5 0x9 +#define MAIN_FRACFREQ5 0x374BC6 +#define MAIN_MDIV5 0xC +#define MAIN_MDIV6 0x48 +#define MAIN_MDIV7 0x4 + +/* DDR PLL */ +#if defined(CONFIG_TI816X_DDR_PLL_400) /* 400 MHz */ +#define DDR_N 59 +#define DDR_P 0x1 +#define DDR_MDIV1 0x4 +#define DDR_INTFREQ2 0x8 +#define DDR_FRACFREQ2 0xD99999 +#define DDR_MDIV2 0x1E +#define DDR_INTFREQ3 0x8 +#define DDR_FRACFREQ3 0x0 +#define DDR_MDIV3 0x4 +#define DDR_INTFREQ4 0xE /* Expansion DDR clk */ +#define DDR_FRACFREQ4 0x0 +#define DDR_MDIV4 0x4 +#define DDR_INTFREQ5 0xE /* Expansion DDR clk */ +#define DDR_FRACFREQ5 0x0 +#define DDR_MDIV5 0x4 +#elif defined(CONFIG_TI816X_DDR_PLL_531) /* 531 MHz */ +#define DDR_N 59 +#define DDR_P 0x1 +#define DDR_MDIV1 0x3 +#define DDR_INTFREQ2 0x8 +#define DDR_FRACFREQ2 0xD99999 +#define DDR_MDIV2 0x1E +#define DDR_INTFREQ3 0x8 +#define DDR_FRACFREQ3 0x0 +#define DDR_MDIV3 0x4 +#define DDR_INTFREQ4 0xE /* Expansion DDR clk */ +#define DDR_FRACFREQ4 0x0 +#define DDR_MDIV4 0x4 +#define DDR_INTFREQ5 0xE /* Expansion DDR clk */ +#define DDR_FRACFREQ5 0x0 +#define DDR_MDIV5 0x4 +#elif defined(CONFIG_TI816X_DDR_PLL_675) /* 675 MHz */ +#define DDR_N 50 +#define DDR_P 0x1 +#define DDR_MDIV1 0x2 +#define DDR_INTFREQ2 0x9 +#define DDR_FRACFREQ2 0x0 +#define DDR_MDIV2 0x19 +#define DDR_INTFREQ3 0x13 +#define DDR_FRACFREQ3 0x800000 +#define DDR_MDIV3 0x2 +#define DDR_INTFREQ4 0xE /* Expansion DDR clk */ +#define DDR_FRACFREQ4 0x0 +#define DDR_MDIV4 0x4 +#define DDR_INTFREQ5 0xE /* Expansion DDR clk */ +#define DDR_FRACFREQ5 0x0 +#define DDR_MDIV5 0x4 +#elif defined(CONFIG_TI816X_DDR_PLL_796) /* 796 MHz */ +#define DDR_N 59 +#define DDR_P 0x1 +#define DDR_MDIV1 0x2 +#define DDR_INTFREQ2 0x8 +#define DDR_FRACFREQ2 0xD99999 +#define DDR_MDIV2 0x1E +#define DDR_INTFREQ3 0x8 +#define DDR_FRACFREQ3 0x0 +#define DDR_MDIV3 0x4 +#define DDR_INTFREQ4 0xE /* Expansion DDR clk */ +#define DDR_FRACFREQ4 0x0 +#define DDR_MDIV4 0x4 +#define DDR_INTFREQ5 0xE /* Expansion DDR clk */ +#define DDR_FRACFREQ5 0x0 +#define DDR_MDIV5 0x4 +#endif + +#define CONTROL_STATUS (CTRL_BASE + 0x40) +#define DDR_RCD (CTRL_BASE + 0x070C) +#define CM_TIMER1_CLKSEL (PRCM_BASE + 0x390) +#define DMM_PAT_BASE_ADDR (DMM_BASE + 0x420) +#define CM_ALWON_CUST_EFUSE_CLKCTRL (PRCM_BASE + 0x1628) + +#define INTCPS_SYSCONFIG 0x48200010 +#define CM_SYSCLK10_CLKSEL 0x48180324 + +struct cm_pll { + unsigned int mainpll_ctrl; /* offset 0x400 */ + unsigned int mainpll_pwd; + unsigned int mainpll_freq1; + unsigned int mainpll_div1; + unsigned int mainpll_freq2; + unsigned int mainpll_div2; + unsigned int mainpll_freq3; + unsigned int mainpll_div3; + unsigned int mainpll_freq4; + unsigned int mainpll_div4; + unsigned int mainpll_freq5; + unsigned int mainpll_div5; + unsigned int resv0[1]; + unsigned int mainpll_div6; + unsigned int resv1[1]; + unsigned int mainpll_div7; + unsigned int ddrpll_ctrl; /* offset 0x440 */ + unsigned int ddrpll_pwd; + unsigned int resv2[1]; + unsigned int ddrpll_div1; + unsigned int ddrpll_freq2; + unsigned int ddrpll_div2; + unsigned int ddrpll_freq3; + unsigned int ddrpll_div3; + unsigned int ddrpll_freq4; + unsigned int ddrpll_div4; + unsigned int ddrpll_freq5; + unsigned int ddrpll_div5; + unsigned int videopll_ctrl; /* offset 0x470 */ + unsigned int videopll_pwd; + unsigned int videopll_freq1; + unsigned int videopll_div1; + unsigned int videopll_freq2; + unsigned int videopll_div2; + unsigned int videopll_freq3; + unsigned int videopll_div3; + unsigned int resv3[4]; + unsigned int audiopll_ctrl; /* offset 0x4A0 */ + unsigned int audiopll_pwd; + unsigned int resv4[2]; + unsigned int audiopll_freq2; + unsigned int audiopll_div2; + unsigned int audiopll_freq3; + unsigned int audiopll_div3; + unsigned int audiopll_freq4; + unsigned int audiopll_div4; + unsigned int audiopll_freq5; + unsigned int audiopll_div5; +}; + +const struct cm_alwon *cmalwon = (struct cm_alwon *)CM_ALWON_BASE; +const struct cm_def *cmdef = (struct cm_def *)CM_DEFAULT_BASE; +const struct cm_pll *cmpll = (struct cm_pll *)CM_PLL_BASE; +const struct wd_timer *wdtimer = (struct wd_timer *)WDT_BASE; + +void enable_dmm_clocks(void) +{ + writel(PRCM_MOD_EN, &cmdef->l3fastclkstctrl); + writel(PRCM_MOD_EN, &cmdef->emif0clkctrl); + writel(PRCM_MOD_EN, &cmdef->emif1clkctrl); + + /* Wait for clocks to be active */ + while ((readl(&cmdef->l3fastclkstctrl) & 0x300) != 0x300) + ; + /* Wait for emif0 to be fully functional, including OCP */ + while (((readl(&cmdef->emif0clkctrl) >> 17) & 0x3) != 0) + ; + /* Wait for emif1 to be fully functional, including OCP */ + while (((readl(&cmdef->emif1clkctrl) >> 17) & 0x3) != 0) + ; + + writel(PRCM_MOD_EN, &cmdef->dmmclkctrl); + /* Wait for dmm to be fully functional, including OCP */ + while (((readl(&cmdef->dmmclkctrl) >> 17) & 0x3) != 0) + ; + + /* Enable Tiled Access */ + writel(0x80000000, DMM_PAT_BASE_ADDR); +} + +/* assume delay is aprox at least 1us */ +static void ddr_delay(int d) +{ + int i; + + /* + * read a control register. + * this is a bit more delay and cannot be optimized by the compiler + * assuming one read takes 200 cycles and A8 is runing 1 GHz + * somewhat conservative setting + */ + for (i = 0; i < 50*d; i++) + readl(CONTROL_STATUS); +} + +static void main_pll_init_ti816x(void) +{ + u32 main_pll_ctrl = 0; + + /* Put the PLL in bypass mode by setting BIT2 in its ctrl reg */ + main_pll_ctrl = readl(&cmpll->mainpll_ctrl); + main_pll_ctrl &= 0xFFFFFFFB; + main_pll_ctrl |= BIT(2); + writel(main_pll_ctrl, &cmpll->mainpll_ctrl); + + /* Enable PLL by setting BIT3 in its ctrl reg */ + main_pll_ctrl = readl(&cmpll->mainpll_ctrl); + main_pll_ctrl &= 0xFFFFFFF7; + main_pll_ctrl |= BIT(3); + writel(main_pll_ctrl, &cmpll->mainpll_ctrl); + + /* Write the values of N,P in the CTRL reg */ + main_pll_ctrl = readl(&cmpll->mainpll_ctrl); + main_pll_ctrl &= 0xFF; + main_pll_ctrl |= (MAIN_N<<16 | MAIN_P<<8); + writel(main_pll_ctrl, &cmpll->mainpll_ctrl); + + /* Power up clock1-7 */ + writel(0x0, &cmpll->mainpll_pwd); + + /* Program the freq and divider values for clock1-7 */ + writel((1<<31 | 1<<28 | (MAIN_INTFREQ1<<24) | MAIN_FRACFREQ1), + &cmpll->mainpll_freq1); + writel(((1<<8) | MAIN_MDIV1), &cmpll->mainpll_div1); + + writel((1<<31 | 1<<28 | (MAIN_INTFREQ2<<24) | MAIN_FRACFREQ2), + &cmpll->mainpll_freq2); + writel(((1<<8) | MAIN_MDIV2), &cmpll->mainpll_div2); + + writel((1<<31 | 1<<28 | (MAIN_INTFREQ3<<24) | MAIN_FRACFREQ3), + &cmpll->mainpll_freq3); + writel(((1<<8) | MAIN_MDIV3), &cmpll->mainpll_div3); + + writel((1<<31 | 1<<28 | (MAIN_INTFREQ4<<24) | MAIN_FRACFREQ4), + &cmpll->mainpll_freq4); + writel(((1<<8) | MAIN_MDIV4), &cmpll->mainpll_div4); + + writel((1<<31 | 1<<28 | (MAIN_INTFREQ5<<24) | MAIN_FRACFREQ5), + &cmpll->mainpll_freq5); + writel(((1<<8) | MAIN_MDIV5), &cmpll->mainpll_div5); + + writel((1<<8 | MAIN_MDIV6), &cmpll->mainpll_div6); + + writel((1<<8 | MAIN_MDIV7), &cmpll->mainpll_div7); + + /* Wait for PLL to lock */ + while ((readl(&cmpll->mainpll_ctrl) & BIT(7)) != BIT(7)) + ; + + /* Put the PLL in normal mode, disable bypass */ + main_pll_ctrl = readl(&cmpll->mainpll_ctrl); + main_pll_ctrl &= 0xFFFFFFFB; + writel(main_pll_ctrl, &cmpll->mainpll_ctrl); +} + +static void ddr_pll_bypass_ti816x(void) +{ + u32 ddr_pll_ctrl = 0; + + /* Put the PLL in bypass mode by setting BIT2 in its ctrl reg */ + ddr_pll_ctrl = readl(&cmpll->ddrpll_ctrl); + ddr_pll_ctrl &= 0xFFFFFFFB; + ddr_pll_ctrl |= BIT(2); + writel(ddr_pll_ctrl, &cmpll->ddrpll_ctrl); +} + +static void ddr_pll_init_ti816x(void) +{ + u32 ddr_pll_ctrl = 0; + /* Enable PLL by setting BIT3 in its ctrl reg */ + ddr_pll_ctrl = readl(&cmpll->ddrpll_ctrl); + ddr_pll_ctrl &= 0xFFFFFFF7; + ddr_pll_ctrl |= BIT(3); + writel(ddr_pll_ctrl, &cmpll->ddrpll_ctrl); + + /* Write the values of N,P in the CTRL reg */ + ddr_pll_ctrl = readl(&cmpll->ddrpll_ctrl); + ddr_pll_ctrl &= 0xFF; + ddr_pll_ctrl |= (DDR_N<<16 | DDR_P<<8); + writel(ddr_pll_ctrl, &cmpll->ddrpll_ctrl); + + ddr_delay(10); + + /* Power up clock1-5 */ + writel(0x0, &cmpll->ddrpll_pwd); + + /* Program the freq and divider values for clock1-3 */ + writel(((0<<8) | DDR_MDIV1), &cmpll->ddrpll_div1); + ddr_delay(1); + writel(((1<<8) | DDR_MDIV1), &cmpll->ddrpll_div1); + writel((1<<31 | 1<<28 | (DDR_INTFREQ2<<24) | DDR_FRACFREQ2), + &cmpll->ddrpll_freq2); + writel(((1<<8) | DDR_MDIV2), &cmpll->ddrpll_div2); + writel(((0<<8) | DDR_MDIV3), &cmpll->ddrpll_div3); + ddr_delay(1); + writel(((1<<8) | DDR_MDIV3), &cmpll->ddrpll_div3); + ddr_delay(1); + writel((0<<31 | 1<<28 | (DDR_INTFREQ3<<24) | DDR_FRACFREQ3), + &cmpll->ddrpll_freq3); + ddr_delay(1); + writel((1<<31 | 1<<28 | (DDR_INTFREQ3<<24) | DDR_FRACFREQ3), + &cmpll->ddrpll_freq3); + + ddr_delay(5); + + /* Wait for PLL to lock */ + while ((readl(&cmpll->ddrpll_ctrl) & BIT(7)) != BIT(7)) + ; + + /* Power up RCD */ + writel(BIT(0), DDR_RCD); +} + +static void peripheral_enable(void) +{ + /* Wake-up the l3_slow clock */ + writel(PRCM_MOD_EN, &cmalwon->l3slowclkstctrl); + + /* + * Note on Timers: + * There are 8 timers(0-7) out of which timer 0 is a secure timer. + * Timer 0 mux should not be changed + * + * To access the timer registers we need the to be + * enabled which is what we do in the first step + */ + + /* Enable timer1 */ + writel(PRCM_MOD_EN, &cmalwon->timer1clkctrl); + /* Select timer1 clock to be CLKIN (27MHz) */ + writel(BIT(1), CM_TIMER1_CLKSEL); + + /* Wait for timer1 to be ON-ACTIVE */ + while (((readl(&cmalwon->l3slowclkstctrl) + & (0x80000<<1))>>20) != 1) + ; + /* Wait for timer1 to be enabled */ + while (((readl(&cmalwon->timer1clkctrl) & 0x30000)>>16) != 0) + ; + /* Active posted mode */ + writel(PRCM_MOD_EN, (DM_TIMER1_BASE + 0x54)); + while (readl(DM_TIMER1_BASE + 0x10) & BIT(0)) + ; + /* Start timer1 */ + writel(BIT(0), (DM_TIMER1_BASE + 0x38)); + + /* eFuse */ + writel(PRCM_MOD_EN, CM_ALWON_CUST_EFUSE_CLKCTRL); + while (readl(CM_ALWON_CUST_EFUSE_CLKCTRL) != PRCM_MOD_EN) + ; + + /* Enable gpio0 */ + writel(PRCM_MOD_EN, &cmalwon->gpio0clkctrl); + while (readl(&cmalwon->gpio0clkctrl) != PRCM_MOD_EN) + ; + writel((BIT(8)), &cmalwon->gpio0clkctrl); + + /* Enable spi */ + writel(PRCM_MOD_EN, &cmalwon->spiclkctrl); + while (readl(&cmalwon->spiclkctrl) != PRCM_MOD_EN) + ; + + /* Enable i2c0 */ + writel(PRCM_MOD_EN, &cmalwon->i2c0clkctrl); + while (readl(&cmalwon->i2c0clkctrl) != PRCM_MOD_EN) + ; + + /* Enable ethernet0 */ + writel(PRCM_MOD_EN, &cmalwon->ethclkstctrl); + writel(PRCM_MOD_EN, &cmalwon->ethernet0clkctrl); + writel(PRCM_MOD_EN, &cmalwon->ethernet1clkctrl); + + /* Enable hsmmc */ + writel(PRCM_MOD_EN, &cmalwon->sdioclkctrl); + while (readl(&cmalwon->sdioclkctrl) != PRCM_MOD_EN) + ; +} + +void setup_clocks_for_console(void) +{ + /* Fix ROM code bug - from TI-PSP-04.00.02.14 */ + writel(0x0, CM_SYSCLK10_CLKSEL); + + ddr_pll_bypass_ti816x(); + + /* Enable uart0-2 */ + writel(PRCM_MOD_EN, &cmalwon->uart0clkctrl); + while (readl(&cmalwon->uart0clkctrl) != PRCM_MOD_EN) + ; + writel(PRCM_MOD_EN, &cmalwon->uart1clkctrl); + while (readl(&cmalwon->uart1clkctrl) != PRCM_MOD_EN) + ; + writel(PRCM_MOD_EN, &cmalwon->uart2clkctrl); + while (readl(&cmalwon->uart2clkctrl) != PRCM_MOD_EN) + ; + while ((readl(&cmalwon->l3slowclkstctrl) & 0x2100) != 0x2100) + ; +} + +void setup_early_clocks(void) +{ + setup_clocks_for_console(); +} + +void prcm_init(void) +{ + /* Enable the control */ + writel(PRCM_MOD_EN, &cmalwon->controlclkctrl); + + main_pll_init_ti816x(); + ddr_pll_init_ti816x(); + + /* + * With clk freqs setup to desired values, + * enable the required peripherals + */ + peripheral_enable(); +} diff --git a/arch/arm/mach-omap2/am33xx/ddr.c b/arch/arm/mach-omap2/am33xx/ddr.c new file mode 100644 index 0000000000..6acf30c5db --- /dev/null +++ b/arch/arm/mach-omap2/am33xx/ddr.c @@ -0,0 +1,377 @@ +/* + * DDR Configuration for AM33xx devices. + * + * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include + +/** + * Base address for EMIF instances + */ +static struct emif_reg_struct *emif_reg[2] = { + (struct emif_reg_struct *)EMIF4_0_CFG_BASE, + (struct emif_reg_struct *)EMIF4_1_CFG_BASE}; + +/** + * Base addresses for DDR PHY cmd/data regs + */ +static struct ddr_cmd_regs *ddr_cmd_reg[2] = { + (struct ddr_cmd_regs *)DDR_PHY_CMD_ADDR, + (struct ddr_cmd_regs *)DDR_PHY_CMD_ADDR2}; + +static struct ddr_data_regs *ddr_data_reg[2] = { + (struct ddr_data_regs *)DDR_PHY_DATA_ADDR, + (struct ddr_data_regs *)DDR_PHY_DATA_ADDR2}; + +/** + * Base address for ddr io control instances + */ +static struct ddr_cmdtctrl *ioctrl_reg = { + (struct ddr_cmdtctrl *)DDR_CONTROL_BASE_ADDR}; + +static inline u32 get_mr(int nr, u32 cs, u32 mr_addr) +{ + u32 mr; + + mr_addr |= cs << EMIF_REG_CS_SHIFT; + writel(mr_addr, &emif_reg[nr]->emif_lpddr2_mode_reg_cfg); + + mr = readl(&emif_reg[nr]->emif_lpddr2_mode_reg_data); + debug("get_mr: EMIF1 cs %d mr %08x val 0x%x\n", cs, mr_addr, mr); + if (((mr & 0x0000ff00) >> 8) == (mr & 0xff) && + ((mr & 0x00ff0000) >> 16) == (mr & 0xff) && + ((mr & 0xff000000) >> 24) == (mr & 0xff)) + return mr & 0xff; + else + return mr; +} + +static inline void set_mr(int nr, u32 cs, u32 mr_addr, u32 mr_val) +{ + mr_addr |= cs << EMIF_REG_CS_SHIFT; + writel(mr_addr, &emif_reg[nr]->emif_lpddr2_mode_reg_cfg); + writel(mr_val, &emif_reg[nr]->emif_lpddr2_mode_reg_data); +} + +static void configure_mr(int nr, u32 cs) +{ + u32 mr_addr; + + while (get_mr(nr, cs, LPDDR2_MR0) & LPDDR2_MR0_DAI_MASK) + ; + set_mr(nr, cs, LPDDR2_MR10, 0x56); + + set_mr(nr, cs, LPDDR2_MR1, 0x43); + set_mr(nr, cs, LPDDR2_MR2, 0x2); + + mr_addr = LPDDR2_MR2 | EMIF_REG_REFRESH_EN_MASK; + set_mr(nr, cs, mr_addr, 0x2); +} + +/* + * Configure EMIF4D5 registers and MR registers For details about these magic + * values please see the EMIF registers section of the TRM. + */ +void config_sdram_emif4d5(const struct emif_regs *regs, int nr) +{ + writel(0xA0, &emif_reg[nr]->emif_pwr_mgmt_ctrl); + writel(0xA0, &emif_reg[nr]->emif_pwr_mgmt_ctrl_shdw); + writel(regs->zq_config, &emif_reg[nr]->emif_zq_config); + + writel(regs->temp_alert_config, &emif_reg[nr]->emif_temp_alert_config); + writel(regs->emif_rd_wr_lvl_rmp_win, + &emif_reg[nr]->emif_rd_wr_lvl_rmp_win); + writel(regs->emif_rd_wr_lvl_rmp_ctl, + &emif_reg[nr]->emif_rd_wr_lvl_rmp_ctl); + writel(regs->emif_rd_wr_lvl_ctl, &emif_reg[nr]->emif_rd_wr_lvl_ctl); + writel(regs->emif_rd_wr_exec_thresh, + &emif_reg[nr]->emif_rd_wr_exec_thresh); + + /* + * for most SOCs these registers won't need to be changed so only + * write to these registers if someone explicitly has set the + * register's value. + */ + if(regs->emif_cos_config) { + writel(regs->emif_prio_class_serv_map, &emif_reg[nr]->emif_prio_class_serv_map); + writel(regs->emif_connect_id_serv_1_map, &emif_reg[nr]->emif_connect_id_serv_1_map); + writel(regs->emif_connect_id_serv_2_map, &emif_reg[nr]->emif_connect_id_serv_2_map); + writel(regs->emif_cos_config, &emif_reg[nr]->emif_cos_config); + } + + /* + * Sequence to ensure that the PHY is in a known state prior to + * startting hardware leveling. Also acts as to latch some state from + * the EMIF into the PHY. + */ + writel(0x2011, &emif_reg[nr]->emif_iodft_tlgc); + writel(0x2411, &emif_reg[nr]->emif_iodft_tlgc); + writel(0x2011, &emif_reg[nr]->emif_iodft_tlgc); + + clrbits_le32(&emif_reg[nr]->emif_sdram_ref_ctrl, + EMIF_REG_INITREF_DIS_MASK); + + writel(regs->sdram_config, &emif_reg[nr]->emif_sdram_config); + writel(regs->sdram_config, &cstat->secure_emif_sdram_config); + + /* Wait 1ms because of L3 timeout error */ + udelay(1000); + + writel(regs->ref_ctrl, &emif_reg[nr]->emif_sdram_ref_ctrl); + writel(regs->ref_ctrl, &emif_reg[nr]->emif_sdram_ref_ctrl_shdw); + + /* Perform hardware leveling for DDR3 */ + if (emif_sdram_type(regs->sdram_config) == EMIF_SDRAM_TYPE_DDR3) { + writel(readl(&emif_reg[nr]->emif_ddr_ext_phy_ctrl_36) | + 0x100, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_36); + writel(readl(&emif_reg[nr]->emif_ddr_ext_phy_ctrl_36_shdw) | + 0x100, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_36_shdw); + + writel(0x80000000, &emif_reg[nr]->emif_rd_wr_lvl_rmp_ctl); + + /* Enable read leveling */ + writel(0x80000000, &emif_reg[nr]->emif_rd_wr_lvl_ctl); + + /* + * Enable full read and write leveling. Wait for read and write + * leveling bit to clear RDWRLVLFULL_START bit 31 + */ + while ((readl(&emif_reg[nr]->emif_rd_wr_lvl_ctl) & 0x80000000) + != 0) + ; + + /* Check the timeout register to see if leveling is complete */ + if ((readl(&emif_reg[nr]->emif_status) & 0x70) != 0) + puts("DDR3 H/W leveling incomplete with errors\n"); + + } else { + /* DDR2 */ + configure_mr(nr, 0); + configure_mr(nr, 1); + } +} + +/** + * Configure SDRAM + */ +void config_sdram(const struct emif_regs *regs, int nr) +{ + if (regs->zq_config) { + writel(regs->zq_config, &emif_reg[nr]->emif_zq_config); + writel(regs->sdram_config, &cstat->secure_emif_sdram_config); + writel(regs->sdram_config, &emif_reg[nr]->emif_sdram_config); + + /* Trigger initialization */ + writel(0x00003100, &emif_reg[nr]->emif_sdram_ref_ctrl); + /* Wait 1ms because of L3 timeout error */ + udelay(1000); + + /* Write proper sdram_ref_cref_ctrl value */ + writel(regs->ref_ctrl, &emif_reg[nr]->emif_sdram_ref_ctrl); + writel(regs->ref_ctrl, &emif_reg[nr]->emif_sdram_ref_ctrl_shdw); + } + writel(regs->ref_ctrl, &emif_reg[nr]->emif_sdram_ref_ctrl); + writel(regs->ref_ctrl, &emif_reg[nr]->emif_sdram_ref_ctrl_shdw); + writel(regs->sdram_config, &emif_reg[nr]->emif_sdram_config); +} + +/** + * Set SDRAM timings + */ +void set_sdram_timings(const struct emif_regs *regs, int nr) +{ + writel(regs->sdram_tim1, &emif_reg[nr]->emif_sdram_tim_1); + writel(regs->sdram_tim1, &emif_reg[nr]->emif_sdram_tim_1_shdw); + writel(regs->sdram_tim2, &emif_reg[nr]->emif_sdram_tim_2); + writel(regs->sdram_tim2, &emif_reg[nr]->emif_sdram_tim_2_shdw); + writel(regs->sdram_tim3, &emif_reg[nr]->emif_sdram_tim_3); + writel(regs->sdram_tim3, &emif_reg[nr]->emif_sdram_tim_3_shdw); +} + +/* + * Configure EXT PHY registers for software leveling + */ +static void ext_phy_settings_swlvl(const struct emif_regs *regs, int nr) +{ + u32 *ext_phy_ctrl_base = 0; + u32 *emif_ext_phy_ctrl_base = 0; + __maybe_unused const u32 *ext_phy_ctrl_const_regs; + u32 i = 0; + __maybe_unused u32 size; + + ext_phy_ctrl_base = (u32 *)&(regs->emif_ddr_ext_phy_ctrl_1); + emif_ext_phy_ctrl_base = + (u32 *)&(emif_reg[nr]->emif_ddr_ext_phy_ctrl_1); + + /* Configure external phy control timing registers */ + for (i = 0; i < EMIF_EXT_PHY_CTRL_TIMING_REG; i++) { + writel(*ext_phy_ctrl_base, emif_ext_phy_ctrl_base++); + /* Update shadow registers */ + writel(*ext_phy_ctrl_base++, emif_ext_phy_ctrl_base++); + } + +#ifdef CONFIG_AM43XX + /* + * External phy 6-24 registers do not change with ddr frequency. + * These only need to be set on DDR2 on AM43xx. + */ + emif_get_ext_phy_ctrl_const_regs(&ext_phy_ctrl_const_regs, &size); + + if (!size) + return; + + for (i = 0; i < size; i++) { + writel(ext_phy_ctrl_const_regs[i], emif_ext_phy_ctrl_base++); + /* Update shadow registers */ + writel(ext_phy_ctrl_const_regs[i], emif_ext_phy_ctrl_base++); + } +#endif +} + +/* + * Configure EXT PHY registers for hardware leveling + */ +static void ext_phy_settings_hwlvl(const struct emif_regs *regs, int nr) +{ + /* + * Enable hardware leveling on the EMIF. For details about these + * magic values please see the EMIF registers section of the TRM. + */ + writel(0x08020080, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_1); + writel(0x08020080, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_1_shdw); + writel(0x00000000, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_22); + writel(0x00000000, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_22_shdw); + writel(0x00600020, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_23); + writel(0x00600020, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_23_shdw); + writel(0x40010080, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_24); + writel(0x40010080, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_24_shdw); + writel(0x08102040, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_25); + writel(0x08102040, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_25_shdw); + writel(0x00200020, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_26); + writel(0x00200020, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_26_shdw); + writel(0x00200020, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_27); + writel(0x00200020, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_27_shdw); + writel(0x00200020, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_28); + writel(0x00200020, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_28_shdw); + writel(0x00200020, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_29); + writel(0x00200020, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_29_shdw); + writel(0x00200020, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_30); + writel(0x00200020, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_30_shdw); + writel(0x00000000, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_31); + writel(0x00000000, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_31_shdw); + writel(0x00000000, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_32); + writel(0x00000000, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_32_shdw); + writel(0x00000000, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_33); + writel(0x00000000, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_33_shdw); + writel(0x00000000, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_34); + writel(0x00000000, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_34_shdw); + writel(0x00000000, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_35); + writel(0x00000000, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_35_shdw); + writel(0x000000FF, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_36); + writel(0x000000FF, &emif_reg[nr]->emif_ddr_ext_phy_ctrl_36_shdw); + + /* + * Sequence to ensure that the PHY is again in a known state after + * hardware leveling. + */ + writel(0x2011, &emif_reg[nr]->emif_iodft_tlgc); + writel(0x2411, &emif_reg[nr]->emif_iodft_tlgc); + writel(0x2011, &emif_reg[nr]->emif_iodft_tlgc); +} + +/** + * Configure DDR PHY + */ +void config_ddr_phy(const struct emif_regs *regs, int nr) +{ + /* + * Disable initialization and refreshes for now until we finish + * programming EMIF regs and set time between rising edge of + * DDR_RESET to rising edge of DDR_CKE to > 500us per memory spec. + * We currently hardcode a value based on a max expected frequency + * of 400MHz. + */ + writel(EMIF_REG_INITREF_DIS_MASK | 0x3100, + &emif_reg[nr]->emif_sdram_ref_ctrl); + + writel(regs->emif_ddr_phy_ctlr_1, + &emif_reg[nr]->emif_ddr_phy_ctrl_1); + writel(regs->emif_ddr_phy_ctlr_1, + &emif_reg[nr]->emif_ddr_phy_ctrl_1_shdw); + + if (get_emif_rev((u32)emif_reg[nr]) == EMIF_4D5) { + if (emif_sdram_type(regs->sdram_config) == EMIF_SDRAM_TYPE_DDR3) + ext_phy_settings_hwlvl(regs, nr); + else + ext_phy_settings_swlvl(regs, nr); + } +} + +/** + * Configure DDR CMD control registers + */ +void config_cmd_ctrl(const struct cmd_control *cmd, int nr) +{ + if (!cmd) + return; + + writel(cmd->cmd0csratio, &ddr_cmd_reg[nr]->cm0csratio); + writel(cmd->cmd0iclkout, &ddr_cmd_reg[nr]->cm0iclkout); + + writel(cmd->cmd1csratio, &ddr_cmd_reg[nr]->cm1csratio); + writel(cmd->cmd1iclkout, &ddr_cmd_reg[nr]->cm1iclkout); + + writel(cmd->cmd2csratio, &ddr_cmd_reg[nr]->cm2csratio); + writel(cmd->cmd2iclkout, &ddr_cmd_reg[nr]->cm2iclkout); +} + +/** + * Configure DDR DATA registers + */ +void config_ddr_data(const struct ddr_data *data, int nr) +{ + int i; + + if (!data) + return; + + for (i = 0; i < DDR_DATA_REGS_NR; i++) { + writel(data->datardsratio0, + &(ddr_data_reg[nr]+i)->dt0rdsratio0); + writel(data->datawdsratio0, + &(ddr_data_reg[nr]+i)->dt0wdsratio0); + writel(data->datawiratio0, + &(ddr_data_reg[nr]+i)->dt0wiratio0); + writel(data->datagiratio0, + &(ddr_data_reg[nr]+i)->dt0giratio0); + writel(data->datafwsratio0, + &(ddr_data_reg[nr]+i)->dt0fwsratio0); + writel(data->datawrsratio0, + &(ddr_data_reg[nr]+i)->dt0wrsratio0); + } +} + +void config_io_ctrl(const struct ctrl_ioregs *ioregs) +{ + if (!ioregs) + return; + + writel(ioregs->cm0ioctl, &ioctrl_reg->cm0ioctl); + writel(ioregs->cm1ioctl, &ioctrl_reg->cm1ioctl); + writel(ioregs->cm2ioctl, &ioctrl_reg->cm2ioctl); + writel(ioregs->dt0ioctl, &ioctrl_reg->dt0ioctl); + writel(ioregs->dt1ioctl, &ioctrl_reg->dt1ioctl); +#ifdef CONFIG_AM43XX + writel(ioregs->dt2ioctrl, &ioctrl_reg->dt2ioctrl); + writel(ioregs->dt3ioctrl, &ioctrl_reg->dt3ioctrl); + writel(ioregs->emif_sdram_config_ext, + &ioctrl_reg->emif_sdram_config_ext); +#endif +} diff --git a/arch/arm/mach-omap2/am33xx/emif4.c b/arch/arm/mach-omap2/am33xx/emif4.c new file mode 100644 index 0000000000..27fa3fb462 --- /dev/null +++ b/arch/arm/mach-omap2/am33xx/emif4.c @@ -0,0 +1,140 @@ +/* + * emif4.c + * + * AM33XX emif4 configuration file + * + * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/ + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +int dram_init(void) +{ +#ifndef CONFIG_SKIP_LOWLEVEL_INIT + sdram_init(); +#endif + + /* dram_init must store complete ramsize in gd->ram_size */ + gd->ram_size = get_ram_size( + (void *)CONFIG_SYS_SDRAM_BASE, + CONFIG_MAX_RAM_BANK_SIZE); + return 0; +} + +void dram_init_banksize(void) +{ + gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE; + gd->bd->bi_dram[0].size = gd->ram_size; +} + + +#ifndef CONFIG_SKIP_LOWLEVEL_INIT +#ifdef CONFIG_TI81XX +static struct dmm_lisa_map_regs *hw_lisa_map_regs = + (struct dmm_lisa_map_regs *)DMM_BASE; +#endif +#ifndef CONFIG_TI816X +static struct vtp_reg *vtpreg[2] = { + (struct vtp_reg *)VTP0_CTRL_ADDR, + (struct vtp_reg *)VTP1_CTRL_ADDR}; +#endif +#ifdef CONFIG_AM33XX +static struct ddr_ctrl *ddrctrl = (struct ddr_ctrl *)DDR_CTRL_ADDR; +#endif +#ifdef CONFIG_AM43XX +static struct ddr_ctrl *ddrctrl = (struct ddr_ctrl *)DDR_CTRL_ADDR; +static struct cm_device_inst *cm_device = + (struct cm_device_inst *)CM_DEVICE_INST; +#endif + +#ifdef CONFIG_TI81XX +void config_dmm(const struct dmm_lisa_map_regs *regs) +{ + enable_dmm_clocks(); + + writel(0, &hw_lisa_map_regs->dmm_lisa_map_3); + writel(0, &hw_lisa_map_regs->dmm_lisa_map_2); + writel(0, &hw_lisa_map_regs->dmm_lisa_map_1); + writel(0, &hw_lisa_map_regs->dmm_lisa_map_0); + + writel(regs->dmm_lisa_map_3, &hw_lisa_map_regs->dmm_lisa_map_3); + writel(regs->dmm_lisa_map_2, &hw_lisa_map_regs->dmm_lisa_map_2); + writel(regs->dmm_lisa_map_1, &hw_lisa_map_regs->dmm_lisa_map_1); + writel(regs->dmm_lisa_map_0, &hw_lisa_map_regs->dmm_lisa_map_0); +} +#endif + +#ifndef CONFIG_TI816X +static void config_vtp(int nr) +{ + writel(readl(&vtpreg[nr]->vtp0ctrlreg) | VTP_CTRL_ENABLE, + &vtpreg[nr]->vtp0ctrlreg); + writel(readl(&vtpreg[nr]->vtp0ctrlreg) & (~VTP_CTRL_START_EN), + &vtpreg[nr]->vtp0ctrlreg); + writel(readl(&vtpreg[nr]->vtp0ctrlreg) | VTP_CTRL_START_EN, + &vtpreg[nr]->vtp0ctrlreg); + + /* Poll for READY */ + while ((readl(&vtpreg[nr]->vtp0ctrlreg) & VTP_CTRL_READY) != + VTP_CTRL_READY) + ; +} +#endif + +void __weak ddr_pll_config(unsigned int ddrpll_m) +{ +} + +void config_ddr(unsigned int pll, const struct ctrl_ioregs *ioregs, + const struct ddr_data *data, const struct cmd_control *ctrl, + const struct emif_regs *regs, int nr) +{ + ddr_pll_config(pll); +#ifndef CONFIG_TI816X + config_vtp(nr); +#endif + config_cmd_ctrl(ctrl, nr); + + config_ddr_data(data, nr); +#ifdef CONFIG_AM33XX + config_io_ctrl(ioregs); + + /* Set CKE to be controlled by EMIF/DDR PHY */ + writel(DDR_CKE_CTRL_NORMAL, &ddrctrl->ddrckectrl); + +#endif +#ifdef CONFIG_AM43XX + writel(readl(&cm_device->cm_dll_ctrl) & ~0x1, &cm_device->cm_dll_ctrl); + while ((readl(&cm_device->cm_dll_ctrl) & CM_DLL_READYST) == 0) + ; + + config_io_ctrl(ioregs); + + /* Set CKE to be controlled by EMIF/DDR PHY */ + writel(DDR_CKE_CTRL_NORMAL, &ddrctrl->ddrckectrl); + + if (emif_sdram_type(regs->sdram_config) == EMIF_SDRAM_TYPE_DDR3) + /* Allow EMIF to control DDR_RESET */ + writel(0x00000000, &ddrctrl->ddrioctrl); +#endif + + /* Program EMIF instance */ + config_ddr_phy(regs, nr); + set_sdram_timings(regs, nr); + if (get_emif_rev(EMIF1_BASE) == EMIF_4D5) + config_sdram_emif4d5(regs, nr); + else + config_sdram(regs, nr); +} +#endif diff --git a/arch/arm/mach-omap2/am33xx/mux.c b/arch/arm/mach-omap2/am33xx/mux.c new file mode 100644 index 0000000000..2ded47228d --- /dev/null +++ b/arch/arm/mach-omap2/am33xx/mux.c @@ -0,0 +1,33 @@ +/* + * mux.c + * + * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation version 2. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include + +/* + * Configure the pin mux for the module + */ +void configure_module_pin_mux(struct module_pin_mux *mod_pin_mux) +{ + int i; + + if (!mod_pin_mux) + return; + + for (i = 0; mod_pin_mux[i].reg_offset != -1; i++) + MUX_CFG(mod_pin_mux[i].val, mod_pin_mux[i].reg_offset); +} diff --git a/arch/arm/mach-omap2/am33xx/sys_info.c b/arch/arm/mach-omap2/am33xx/sys_info.c new file mode 100644 index 0000000000..f0f72fa6d4 --- /dev/null +++ b/arch/arm/mach-omap2/am33xx/sys_info.c @@ -0,0 +1,176 @@ +/* + * sys_info.c + * + * System information functions + * + * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/ + * + * Derived from Beagle Board and 3430 SDP code by + * Richard Woodruff + * Syed Mohammed Khasim + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include + +struct ctrl_stat *cstat = (struct ctrl_stat *)CTRL_BASE; + +/** + * get_cpu_rev(void) - extract rev info + */ +u32 get_cpu_rev(void) +{ + u32 id; + u32 rev; + + id = readl(DEVICE_ID); + rev = (id >> 28) & 0xff; + + return rev; +} + +/** + * get_cpu_type(void) - extract cpu info + */ +u32 get_cpu_type(void) +{ + u32 id = 0; + u32 partnum; + + id = readl(DEVICE_ID); + partnum = (id >> 12) & 0xffff; + + return partnum; +} + +/** + * get_device_type(): tell if GP/HS/EMU/TST + */ +u32 get_device_type(void) +{ + int mode; + mode = readl(&cstat->statusreg) & (DEVICE_MASK); + return mode >>= 8; +} + +/** + * get_sysboot_value(void) - return SYS_BOOT[4:0] + */ +u32 get_sysboot_value(void) +{ + return readl(&cstat->statusreg) & SYSBOOT_MASK; +} + +#ifdef CONFIG_DISPLAY_CPUINFO +static char *cpu_revs[] = { + "1.0", + "2.0", + "2.1"}; + + +static char *dev_types[] = { + "TST", + "EMU", + "HS", + "GP"}; + +/** + * Print CPU information + */ +int print_cpuinfo(void) +{ + char *cpu_s, *sec_s, *rev_s; + + switch (get_cpu_type()) { + case AM335X: + cpu_s = "AM335X"; + break; + case TI81XX: + cpu_s = "TI81XX"; + break; + case AM437X: + cpu_s = "AM437X"; + break; + default: + cpu_s = "Unknown CPU type"; + break; + } + + if (get_cpu_rev() < ARRAY_SIZE(cpu_revs)) + rev_s = cpu_revs[get_cpu_rev()]; + else + rev_s = "?"; + + if (get_device_type() < ARRAY_SIZE(dev_types)) + sec_s = dev_types[get_device_type()]; + else + sec_s = "?"; + + printf("CPU : %s-%s rev %s\n", cpu_s, sec_s, rev_s); + + return 0; +} +#endif /* CONFIG_DISPLAY_CPUINFO */ + +#ifdef CONFIG_AM33XX +int am335x_get_efuse_mpu_max_freq(struct ctrl_dev *cdev) +{ + int sil_rev; + + sil_rev = readl(&cdev->deviceid) >> 28; + + if (sil_rev == 1) + /* PG 2.0, efuse may not be set. */ + return MPUPLL_M_800; + else if (sil_rev >= 2) { + /* Check what the efuse says our max speed is. */ + int efuse_arm_mpu_max_freq; + efuse_arm_mpu_max_freq = readl(&cdev->efuse_sma); + switch ((efuse_arm_mpu_max_freq & DEVICE_ID_MASK)) { + case AM335X_ZCZ_1000: + return MPUPLL_M_1000; + case AM335X_ZCZ_800: + return MPUPLL_M_800; + case AM335X_ZCZ_720: + return MPUPLL_M_720; + case AM335X_ZCZ_600: + case AM335X_ZCE_600: + return MPUPLL_M_600; + case AM335X_ZCZ_300: + case AM335X_ZCE_300: + return MPUPLL_M_300; + } + } + + /* PG 1.0 or otherwise unknown, use the PG1.0 max */ + return MPUPLL_M_720; +} + +int am335x_get_tps65910_mpu_vdd(int sil_rev, int frequency) +{ + /* For PG2.1 and later, we have one set of values. */ + if (sil_rev >= 2) { + switch (frequency) { + case MPUPLL_M_1000: + return TPS65910_OP_REG_SEL_1_3_2_5; + case MPUPLL_M_800: + return TPS65910_OP_REG_SEL_1_2_6; + case MPUPLL_M_720: + return TPS65910_OP_REG_SEL_1_2_0; + case MPUPLL_M_600: + case MPUPLL_M_300: + return TPS65910_OP_REG_SEL_1_1_3; + } + } + + /* Default to PG1.0/PG2.0 values. */ + return TPS65910_OP_REG_SEL_1_1_3; +} +#endif diff --git a/arch/arm/mach-omap2/am33xx/u-boot-spl.lds b/arch/arm/mach-omap2/am33xx/u-boot-spl.lds new file mode 100644 index 0000000000..07cf267878 --- /dev/null +++ b/arch/arm/mach-omap2/am33xx/u-boot-spl.lds @@ -0,0 +1,56 @@ +/* + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, + * + * (C) Copyright 2010 + * Texas Instruments, + * Aneesh V + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +MEMORY { .sram : ORIGIN = CONFIG_SPL_TEXT_BASE,\ + LENGTH = CONFIG_SPL_MAX_SIZE } +MEMORY { .sdram : ORIGIN = CONFIG_SPL_BSS_START_ADDR, \ + LENGTH = CONFIG_SPL_BSS_MAX_SIZE } + +OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm") +OUTPUT_ARCH(arm) +ENTRY(_start) +SECTIONS +{ + .text : + { + __start = .; + *(.vectors) + arch/arm/cpu/armv7/start.o (.text) + *(.text*) + } >.sram + + . = ALIGN(4); + .rodata : { *(SORT_BY_ALIGNMENT(.rodata*)) } >.sram + + . = ALIGN(4); + .data : { *(SORT_BY_ALIGNMENT(.data*)) } >.sram + + .u_boot_list : { + KEEP(*(SORT(.u_boot_list*))); + } >.sram + + . = ALIGN(4); + __image_copy_end = .; + + .end : + { + *(.__end) + } >.sram + + .bss : + { + . = ALIGN(4); + __bss_start = .; + *(.bss*) + . = ALIGN(4); + __bss_end = .; + } >.sdram +} -- cgit v1.2.3