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Diffstat (limited to 'arch/arm/mach-imx/mx6/soc.c')
-rw-r--r--arch/arm/mach-imx/mx6/soc.c703
1 files changed, 703 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mx6/soc.c b/arch/arm/mach-imx/mx6/soc.c
new file mode 100644
index 0000000000..af316735ee
--- /dev/null
+++ b/arch/arm/mach-imx/mx6/soc.c
@@ -0,0 +1,703 @@
+/*
+ * (C) Copyright 2007
+ * Sascha Hauer, Pengutronix
+ *
+ * (C) Copyright 2009 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <linux/errno.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/mach-imx/boot_mode.h>
+#include <asm/mach-imx/dma.h>
+#include <asm/mach-imx/hab.h>
+#include <stdbool.h>
+#include <asm/arch/mxc_hdmi.h>
+#include <asm/arch/crm_regs.h>
+#include <dm.h>
+#include <imx_thermal.h>
+#include <mmc.h>
+
+enum ldo_reg {
+ LDO_ARM,
+ LDO_SOC,
+ LDO_PU,
+};
+
+struct scu_regs {
+ u32 ctrl;
+ u32 config;
+ u32 status;
+ u32 invalidate;
+ u32 fpga_rev;
+};
+
+#if defined(CONFIG_IMX_THERMAL)
+static const struct imx_thermal_plat imx6_thermal_plat = {
+ .regs = (void *)ANATOP_BASE_ADDR,
+ .fuse_bank = 1,
+ .fuse_word = 6,
+};
+
+U_BOOT_DEVICE(imx6_thermal) = {
+ .name = "imx_thermal",
+ .platdata = &imx6_thermal_plat,
+};
+#endif
+
+#if defined(CONFIG_SECURE_BOOT)
+struct imx_sec_config_fuse_t const imx_sec_config_fuse = {
+ .bank = 0,
+ .word = 6,
+};
+#endif
+
+u32 get_nr_cpus(void)
+{
+ struct scu_regs *scu = (struct scu_regs *)SCU_BASE_ADDR;
+ return readl(&scu->config) & 3;
+}
+
+u32 get_cpu_rev(void)
+{
+ struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
+ u32 reg = readl(&anatop->digprog_sololite);
+ u32 type = ((reg >> 16) & 0xff);
+ u32 major, cfg = 0;
+
+ if (type != MXC_CPU_MX6SL) {
+ reg = readl(&anatop->digprog);
+ struct scu_regs *scu = (struct scu_regs *)SCU_BASE_ADDR;
+ cfg = readl(&scu->config) & 3;
+ type = ((reg >> 16) & 0xff);
+ if (type == MXC_CPU_MX6DL) {
+ if (!cfg)
+ type = MXC_CPU_MX6SOLO;
+ }
+
+ if (type == MXC_CPU_MX6Q) {
+ if (cfg == 1)
+ type = MXC_CPU_MX6D;
+ }
+
+ }
+ major = ((reg >> 8) & 0xff);
+ if ((major >= 1) &&
+ ((type == MXC_CPU_MX6Q) || (type == MXC_CPU_MX6D))) {
+ major--;
+ type = MXC_CPU_MX6QP;
+ if (cfg == 1)
+ type = MXC_CPU_MX6DP;
+ }
+ reg &= 0xff; /* mx6 silicon revision */
+ return (type << 12) | (reg + (0x10 * (major + 1)));
+}
+
+/*
+ * OCOTP_CFG3[17:16] (see Fusemap Description Table offset 0x440)
+ * defines a 2-bit SPEED_GRADING
+ */
+#define OCOTP_CFG3_SPEED_SHIFT 16
+#define OCOTP_CFG3_SPEED_800MHZ 0
+#define OCOTP_CFG3_SPEED_850MHZ 1
+#define OCOTP_CFG3_SPEED_1GHZ 2
+#define OCOTP_CFG3_SPEED_1P2GHZ 3
+
+/*
+ * For i.MX6UL
+ */
+#define OCOTP_CFG3_SPEED_528MHZ 1
+#define OCOTP_CFG3_SPEED_696MHZ 2
+
+u32 get_cpu_speed_grade_hz(void)
+{
+ struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
+ struct fuse_bank *bank = &ocotp->bank[0];
+ struct fuse_bank0_regs *fuse =
+ (struct fuse_bank0_regs *)bank->fuse_regs;
+ uint32_t val;
+
+ val = readl(&fuse->cfg3);
+ val >>= OCOTP_CFG3_SPEED_SHIFT;
+ val &= 0x3;
+
+ if (is_mx6ul() || is_mx6ull()) {
+ if (val == OCOTP_CFG3_SPEED_528MHZ)
+ return 528000000;
+ else if (val == OCOTP_CFG3_SPEED_696MHZ)
+ return 69600000;
+ else
+ return 0;
+ }
+
+ switch (val) {
+ /* Valid for IMX6DQ */
+ case OCOTP_CFG3_SPEED_1P2GHZ:
+ if (is_mx6dq() || is_mx6dqp())
+ return 1200000000;
+ /* Valid for IMX6SX/IMX6SDL/IMX6DQ */
+ case OCOTP_CFG3_SPEED_1GHZ:
+ return 996000000;
+ /* Valid for IMX6DQ */
+ case OCOTP_CFG3_SPEED_850MHZ:
+ if (is_mx6dq() || is_mx6dqp())
+ return 852000000;
+ /* Valid for IMX6SX/IMX6SDL/IMX6DQ */
+ case OCOTP_CFG3_SPEED_800MHZ:
+ return 792000000;
+ }
+ return 0;
+}
+
+/*
+ * OCOTP_MEM0[7:6] (see Fusemap Description Table offset 0x480)
+ * defines a 2-bit Temperature Grade
+ *
+ * return temperature grade and min/max temperature in Celsius
+ */
+#define OCOTP_MEM0_TEMP_SHIFT 6
+
+u32 get_cpu_temp_grade(int *minc, int *maxc)
+{
+ struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
+ struct fuse_bank *bank = &ocotp->bank[1];
+ struct fuse_bank1_regs *fuse =
+ (struct fuse_bank1_regs *)bank->fuse_regs;
+ uint32_t val;
+
+ val = readl(&fuse->mem0);
+ val >>= OCOTP_MEM0_TEMP_SHIFT;
+ val &= 0x3;
+
+ if (minc && maxc) {
+ if (val == TEMP_AUTOMOTIVE) {
+ *minc = -40;
+ *maxc = 125;
+ } else if (val == TEMP_INDUSTRIAL) {
+ *minc = -40;
+ *maxc = 105;
+ } else if (val == TEMP_EXTCOMMERCIAL) {
+ *minc = -20;
+ *maxc = 105;
+ } else {
+ *minc = 0;
+ *maxc = 95;
+ }
+ }
+ return val;
+}
+
+#ifdef CONFIG_REVISION_TAG
+u32 __weak get_board_rev(void)
+{
+ u32 cpurev = get_cpu_rev();
+ u32 type = ((cpurev >> 12) & 0xff);
+ if (type == MXC_CPU_MX6SOLO)
+ cpurev = (MXC_CPU_MX6DL) << 12 | (cpurev & 0xFFF);
+
+ if (type == MXC_CPU_MX6D)
+ cpurev = (MXC_CPU_MX6Q) << 12 | (cpurev & 0xFFF);
+
+ return cpurev;
+}
+#endif
+
+static void clear_ldo_ramp(void)
+{
+ struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
+ int reg;
+
+ /* ROM may modify LDO ramp up time according to fuse setting, so in
+ * order to be in the safe side we neeed to reset these settings to
+ * match the reset value: 0'b00
+ */
+ reg = readl(&anatop->ana_misc2);
+ reg &= ~(0x3f << 24);
+ writel(reg, &anatop->ana_misc2);
+}
+
+/*
+ * Set the PMU_REG_CORE register
+ *
+ * Set LDO_SOC/PU/ARM regulators to the specified millivolt level.
+ * Possible values are from 0.725V to 1.450V in steps of
+ * 0.025V (25mV).
+ */
+static int set_ldo_voltage(enum ldo_reg ldo, u32 mv)
+{
+ struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
+ u32 val, step, old, reg = readl(&anatop->reg_core);
+ u8 shift;
+
+ if (mv < 725)
+ val = 0x00; /* Power gated off */
+ else if (mv > 1450)
+ val = 0x1F; /* Power FET switched full on. No regulation */
+ else
+ val = (mv - 700) / 25;
+
+ clear_ldo_ramp();
+
+ switch (ldo) {
+ case LDO_SOC:
+ shift = 18;
+ break;
+ case LDO_PU:
+ shift = 9;
+ break;
+ case LDO_ARM:
+ shift = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ old = (reg & (0x1F << shift)) >> shift;
+ step = abs(val - old);
+ if (step == 0)
+ return 0;
+
+ reg = (reg & ~(0x1F << shift)) | (val << shift);
+ writel(reg, &anatop->reg_core);
+
+ /*
+ * The LDO ramp-up is based on 64 clock cycles of 24 MHz = 2.6 us per
+ * step
+ */
+ udelay(3 * step);
+
+ return 0;
+}
+
+static void set_ahb_rate(u32 val)
+{
+ struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+ u32 reg, div;
+
+ div = get_periph_clk() / val - 1;
+ reg = readl(&mxc_ccm->cbcdr);
+
+ writel((reg & (~MXC_CCM_CBCDR_AHB_PODF_MASK)) |
+ (div << MXC_CCM_CBCDR_AHB_PODF_OFFSET), &mxc_ccm->cbcdr);
+}
+
+static void clear_mmdc_ch_mask(void)
+{
+ struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+ u32 reg;
+ reg = readl(&mxc_ccm->ccdr);
+
+ /* Clear MMDC channel mask */
+ if (is_mx6sx() || is_mx6ul() || is_mx6ull() || is_mx6sl())
+ reg &= ~(MXC_CCM_CCDR_MMDC_CH1_HS_MASK);
+ else
+ reg &= ~(MXC_CCM_CCDR_MMDC_CH1_HS_MASK | MXC_CCM_CCDR_MMDC_CH0_HS_MASK);
+ writel(reg, &mxc_ccm->ccdr);
+}
+
+#define OCOTP_MEM0_REFTOP_TRIM_SHIFT 8
+
+static void init_bandgap(void)
+{
+ struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
+ struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
+ struct fuse_bank *bank = &ocotp->bank[1];
+ struct fuse_bank1_regs *fuse =
+ (struct fuse_bank1_regs *)bank->fuse_regs;
+ uint32_t val;
+
+ /*
+ * Ensure the bandgap has stabilized.
+ */
+ while (!(readl(&anatop->ana_misc0) & 0x80))
+ ;
+ /*
+ * For best noise performance of the analog blocks using the
+ * outputs of the bandgap, the reftop_selfbiasoff bit should
+ * be set.
+ */
+ writel(BM_ANADIG_ANA_MISC0_REFTOP_SELBIASOFF, &anatop->ana_misc0_set);
+ /*
+ * On i.MX6ULL,we need to set VBGADJ bits according to the
+ * REFTOP_TRIM[3:0] in fuse table
+ * 000 - set REFTOP_VBGADJ[2:0] to 3b'110,
+ * 110 - set REFTOP_VBGADJ[2:0] to 3b'000,
+ * 001 - set REFTOP_VBGADJ[2:0] to 3b'001,
+ * 010 - set REFTOP_VBGADJ[2:0] to 3b'010,
+ * 011 - set REFTOP_VBGADJ[2:0] to 3b'011,
+ * 100 - set REFTOP_VBGADJ[2:0] to 3b'100,
+ * 101 - set REFTOP_VBGADJ[2:0] to 3b'101,
+ * 111 - set REFTOP_VBGADJ[2:0] to 3b'111,
+ */
+ if (is_mx6ull()) {
+ val = readl(&fuse->mem0);
+ val >>= OCOTP_MEM0_REFTOP_TRIM_SHIFT;
+ val &= 0x7;
+
+ writel(val << BM_ANADIG_ANA_MISC0_REFTOP_VBGADJ_SHIFT,
+ &anatop->ana_misc0_set);
+ }
+}
+
+#ifdef CONFIG_MX6SL
+static void set_preclk_from_osc(void)
+{
+ struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+ u32 reg;
+
+ reg = readl(&mxc_ccm->cscmr1);
+ reg |= MXC_CCM_CSCMR1_PER_CLK_SEL_MASK;
+ writel(reg, &mxc_ccm->cscmr1);
+}
+#endif
+
+int arch_cpu_init(void)
+{
+ init_aips();
+
+ /* Need to clear MMDC_CHx_MASK to make warm reset work. */
+ clear_mmdc_ch_mask();
+
+ /*
+ * Disable self-bias circuit in the analog bandap.
+ * The self-bias circuit is used by the bandgap during startup.
+ * This bit should be set after the bandgap has initialized.
+ */
+ init_bandgap();
+
+ if (!is_mx6ul() && !is_mx6ull()) {
+ /*
+ * When low freq boot is enabled, ROM will not set AHB
+ * freq, so we need to ensure AHB freq is 132MHz in such
+ * scenario.
+ *
+ * To i.MX6UL, when power up, default ARM core and
+ * AHB rate is 396M and 132M.
+ */
+ if (mxc_get_clock(MXC_ARM_CLK) == 396000000)
+ set_ahb_rate(132000000);
+ }
+
+ if (is_mx6ul()) {
+ if (is_soc_rev(CHIP_REV_1_0) == 0) {
+ /*
+ * According to the design team's requirement on
+ * i.MX6UL,the PMIC_STBY_REQ PAD should be configured
+ * as open drain 100K (0x0000b8a0).
+ * Only exists on TO1.0
+ */
+ writel(0x0000b8a0, IOMUXC_BASE_ADDR + 0x29c);
+ } else {
+ /*
+ * From TO1.1, SNVS adds internal pull up control
+ * for POR_B, the register filed is GPBIT[1:0],
+ * after system boot up, it can be set to 2b'01
+ * to disable internal pull up.It can save about
+ * 30uA power in SNVS mode.
+ */
+ writel((readl(MX6UL_SNVS_LP_BASE_ADDR + 0x10) &
+ (~0x1400)) | 0x400,
+ MX6UL_SNVS_LP_BASE_ADDR + 0x10);
+ }
+ }
+
+ if (is_mx6ull()) {
+ /*
+ * GPBIT[1:0] is suggested to set to 2'b11:
+ * 2'b00 : always PUP100K
+ * 2'b01 : PUP100K when PMIC_ON_REQ or SOC_NOT_FAIL
+ * 2'b10 : always disable PUP100K
+ * 2'b11 : PDN100K when SOC_FAIL, PUP100K when SOC_NOT_FAIL
+ * register offset is different from i.MX6UL, since
+ * i.MX6UL is fixed by ECO.
+ */
+ writel(readl(MX6UL_SNVS_LP_BASE_ADDR) |
+ 0x3, MX6UL_SNVS_LP_BASE_ADDR);
+ }
+
+ /* Set perclk to source from OSC 24MHz */
+#if defined(CONFIG_MX6SL)
+ set_preclk_from_osc();
+#endif
+
+ imx_set_wdog_powerdown(false); /* Disable PDE bit of WMCR register */
+
+ init_src();
+
+ return 0;
+}
+
+#ifdef CONFIG_ENV_IS_IN_MMC
+__weak int board_mmc_get_env_dev(int devno)
+{
+ return CONFIG_SYS_MMC_ENV_DEV;
+}
+
+static int mmc_get_boot_dev(void)
+{
+ struct src *src_regs = (struct src *)SRC_BASE_ADDR;
+ u32 soc_sbmr = readl(&src_regs->sbmr1);
+ u32 bootsel;
+ int devno;
+
+ /*
+ * Refer to
+ * "i.MX 6Dual/6Quad Applications Processor Reference Manual"
+ * Chapter "8.5.3.1 Expansion Device eFUSE Configuration"
+ * i.MX6SL/SX/UL has same layout.
+ */
+ bootsel = (soc_sbmr & 0x000000FF) >> 6;
+
+ /* No boot from sd/mmc */
+ if (bootsel != 1)
+ return -1;
+
+ /* BOOT_CFG2[3] and BOOT_CFG2[4] */
+ devno = (soc_sbmr & 0x00001800) >> 11;
+
+ return devno;
+}
+
+int mmc_get_env_dev(void)
+{
+ int devno = mmc_get_boot_dev();
+
+ /* If not boot from sd/mmc, use default value */
+ if (devno < 0)
+ return CONFIG_SYS_MMC_ENV_DEV;
+
+ return board_mmc_get_env_dev(devno);
+}
+
+#ifdef CONFIG_SYS_MMC_ENV_PART
+__weak int board_mmc_get_env_part(int devno)
+{
+ return CONFIG_SYS_MMC_ENV_PART;
+}
+
+uint mmc_get_env_part(struct mmc *mmc)
+{
+ int devno = mmc_get_boot_dev();
+
+ /* If not boot from sd/mmc, use default value */
+ if (devno < 0)
+ return CONFIG_SYS_MMC_ENV_PART;
+
+ return board_mmc_get_env_part(devno);
+}
+#endif
+#endif
+
+int board_postclk_init(void)
+{
+ set_ldo_voltage(LDO_SOC, 1175); /* Set VDDSOC to 1.175V */
+
+ return 0;
+}
+
+#if defined(CONFIG_FEC_MXC)
+void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
+{
+ struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
+ struct fuse_bank *bank = &ocotp->bank[4];
+ struct fuse_bank4_regs *fuse =
+ (struct fuse_bank4_regs *)bank->fuse_regs;
+
+ if ((is_mx6sx() || is_mx6ul() || is_mx6ull()) && dev_id == 1) {
+ u32 value = readl(&fuse->mac_addr2);
+ mac[0] = value >> 24 ;
+ mac[1] = value >> 16 ;
+ mac[2] = value >> 8 ;
+ mac[3] = value ;
+
+ value = readl(&fuse->mac_addr1);
+ mac[4] = value >> 24 ;
+ mac[5] = value >> 16 ;
+
+ } else {
+ u32 value = readl(&fuse->mac_addr1);
+ mac[0] = (value >> 8);
+ mac[1] = value ;
+
+ value = readl(&fuse->mac_addr0);
+ mac[2] = value >> 24 ;
+ mac[3] = value >> 16 ;
+ mac[4] = value >> 8 ;
+ mac[5] = value ;
+ }
+
+}
+#endif
+
+/*
+ * cfg_val will be used for
+ * Boot_cfg4[7:0]:Boot_cfg3[7:0]:Boot_cfg2[7:0]:Boot_cfg1[7:0]
+ * After reset, if GPR10[28] is 1, ROM will use GPR9[25:0]
+ * instead of SBMR1 to determine the boot device.
+ */
+const struct boot_mode soc_boot_modes[] = {
+ {"normal", MAKE_CFGVAL(0x00, 0x00, 0x00, 0x00)},
+ /* reserved value should start rom usb */
+#if defined(CONFIG_MX6UL) || defined(CONFIG_MX6ULL)
+ {"usb", MAKE_CFGVAL(0x20, 0x00, 0x00, 0x00)},
+#else
+ {"usb", MAKE_CFGVAL(0x10, 0x00, 0x00, 0x00)},
+#endif
+ {"sata", MAKE_CFGVAL(0x20, 0x00, 0x00, 0x00)},
+ {"ecspi1:0", MAKE_CFGVAL(0x30, 0x00, 0x00, 0x08)},
+ {"ecspi1:1", MAKE_CFGVAL(0x30, 0x00, 0x00, 0x18)},
+ {"ecspi1:2", MAKE_CFGVAL(0x30, 0x00, 0x00, 0x28)},
+ {"ecspi1:3", MAKE_CFGVAL(0x30, 0x00, 0x00, 0x38)},
+ /* 4 bit bus width */
+ {"esdhc1", MAKE_CFGVAL(0x40, 0x20, 0x00, 0x00)},
+ {"esdhc2", MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
+ {"esdhc3", MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
+ {"esdhc4", MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},
+ {NULL, 0},
+};
+
+void reset_misc(void)
+{
+#ifdef CONFIG_VIDEO_MXS
+ lcdif_power_down();
+#endif
+}
+
+void s_init(void)
+{
+ struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
+ struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+ u32 mask480;
+ u32 mask528;
+ u32 reg, periph1, periph2;
+
+ if (is_mx6sx() || is_mx6ul() || is_mx6ull())
+ return;
+
+ /* Due to hardware limitation, on MX6Q we need to gate/ungate all PFDs
+ * to make sure PFD is working right, otherwise, PFDs may
+ * not output clock after reset, MX6DL and MX6SL have added 396M pfd
+ * workaround in ROM code, as bus clock need it
+ */
+
+ mask480 = ANATOP_PFD_CLKGATE_MASK(0) |
+ ANATOP_PFD_CLKGATE_MASK(1) |
+ ANATOP_PFD_CLKGATE_MASK(2) |
+ ANATOP_PFD_CLKGATE_MASK(3);
+ mask528 = ANATOP_PFD_CLKGATE_MASK(1) |
+ ANATOP_PFD_CLKGATE_MASK(3);
+
+ reg = readl(&ccm->cbcmr);
+ periph2 = ((reg & MXC_CCM_CBCMR_PRE_PERIPH2_CLK_SEL_MASK)
+ >> MXC_CCM_CBCMR_PRE_PERIPH2_CLK_SEL_OFFSET);
+ periph1 = ((reg & MXC_CCM_CBCMR_PRE_PERIPH_CLK_SEL_MASK)
+ >> MXC_CCM_CBCMR_PRE_PERIPH_CLK_SEL_OFFSET);
+
+ /* Checking if PLL2 PFD0 or PLL2 PFD2 is using for periph clock */
+ if ((periph2 != 0x2) && (periph1 != 0x2))
+ mask528 |= ANATOP_PFD_CLKGATE_MASK(0);
+
+ if ((periph2 != 0x1) && (periph1 != 0x1) &&
+ (periph2 != 0x3) && (periph1 != 0x3))
+ mask528 |= ANATOP_PFD_CLKGATE_MASK(2);
+
+ writel(mask480, &anatop->pfd_480_set);
+ writel(mask528, &anatop->pfd_528_set);
+ writel(mask480, &anatop->pfd_480_clr);
+ writel(mask528, &anatop->pfd_528_clr);
+}
+
+#ifdef CONFIG_IMX_HDMI
+void imx_enable_hdmi_phy(void)
+{
+ struct hdmi_regs *hdmi = (struct hdmi_regs *)HDMI_ARB_BASE_ADDR;
+ u8 reg;
+ reg = readb(&hdmi->phy_conf0);
+ reg |= HDMI_PHY_CONF0_PDZ_MASK;
+ writeb(reg, &hdmi->phy_conf0);
+ udelay(3000);
+ reg |= HDMI_PHY_CONF0_ENTMDS_MASK;
+ writeb(reg, &hdmi->phy_conf0);
+ udelay(3000);
+ reg |= HDMI_PHY_CONF0_GEN2_TXPWRON_MASK;
+ writeb(reg, &hdmi->phy_conf0);
+ writeb(HDMI_MC_PHYRSTZ_ASSERT, &hdmi->mc_phyrstz);
+}
+
+void imx_setup_hdmi(void)
+{
+ struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+ struct hdmi_regs *hdmi = (struct hdmi_regs *)HDMI_ARB_BASE_ADDR;
+ int reg, count;
+ u8 val;
+
+ /* Turn on HDMI PHY clock */
+ reg = readl(&mxc_ccm->CCGR2);
+ reg |= MXC_CCM_CCGR2_HDMI_TX_IAHBCLK_MASK|
+ MXC_CCM_CCGR2_HDMI_TX_ISFRCLK_MASK;
+ writel(reg, &mxc_ccm->CCGR2);
+ writeb(HDMI_MC_PHYRSTZ_DEASSERT, &hdmi->mc_phyrstz);
+ reg = readl(&mxc_ccm->chsccdr);
+ reg &= ~(MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK|
+ MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK|
+ MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK);
+ reg |= (CHSCCDR_PODF_DIVIDE_BY_3
+ << MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET)
+ |(CHSCCDR_IPU_PRE_CLK_540M_PFD
+ << MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET);
+ writel(reg, &mxc_ccm->chsccdr);
+
+ /* Clear the overflow condition */
+ if (readb(&hdmi->ih_fc_stat2) & HDMI_IH_FC_STAT2_OVERFLOW_MASK) {
+ /* TMDS software reset */
+ writeb((u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, &hdmi->mc_swrstz);
+ val = readb(&hdmi->fc_invidconf);
+ /* Need minimum 3 times to write to clear the register */
+ for (count = 0 ; count < 5 ; count++)
+ writeb(val, &hdmi->fc_invidconf);
+ }
+}
+#endif
+
+#ifdef CONFIG_IMX_BOOTAUX
+int arch_auxiliary_core_up(u32 core_id, u32 boot_private_data)
+{
+ struct src *src_reg;
+ u32 stack, pc;
+
+ if (!boot_private_data)
+ return -EINVAL;
+
+ stack = *(u32 *)boot_private_data;
+ pc = *(u32 *)(boot_private_data + 4);
+
+ /* Set the stack and pc to M4 bootROM */
+ writel(stack, M4_BOOTROM_BASE_ADDR);
+ writel(pc, M4_BOOTROM_BASE_ADDR + 4);
+
+ /* Enable M4 */
+ src_reg = (struct src *)SRC_BASE_ADDR;
+ clrsetbits_le32(&src_reg->scr, SRC_SCR_M4C_NON_SCLR_RST_MASK,
+ SRC_SCR_M4_ENABLE_MASK);
+
+ return 0;
+}
+
+int arch_auxiliary_core_check_up(u32 core_id)
+{
+ struct src *src_reg = (struct src *)SRC_BASE_ADDR;
+ unsigned val;
+
+ val = readl(&src_reg->scr);
+
+ if (val & SRC_SCR_M4C_NON_SCLR_RST_MASK)
+ return 0; /* assert in reset */
+
+ return 1;
+}
+#endif
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-28 06:17:14 +0000