arm: i.MX6UL: add Armadeus Systems OPOS6UL SoM and OPOS6ULDev carrier board

OPOS6UL is an i.MX6UL based SoM with 256MB RAM, 4GB eMMC and an ethernet
phy. OPOS6ULDev is carrier board for the OPOS6UL.

U-Boot SPL 2017.03-rc3-00002-g5085c26 (Mar 07 2017 - 09:48:09)
Trying to boot from MMC1

U-Boot 2017.03-rc3-00002-g5085c26 (Mar 07 2017 - 09:48:09 +0100)

CPU:   Freescale i.MX6UL rev1.0 528 MHz (running at 396 MHz)
CPU:   Industrial temperature grade (-40C to 105C) at 40C
Reset cause: POR
Model: Armadeus Systems OPOS6UL SoM on OPOS6ULDev board
DRAM:  256 MiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
Video: 800x480x18
In:    serial
Out:   serial
Err:   serial
Net:   FEC [PRIME]
Hit any key to stop autoboot:  0

Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

1 files changed, 302 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv7/mx6/opos6ul.c b/arch/arm/cpu/armv7/mx6/opos6ul.c
new file mode 100644
index 0000000000..ea2f0ec251
--- /dev/null
+++ b/arch/arm/cpu/armv7/mx6/opos6ul.c
@@ -0,0 +1,302 @@
+/*
+ * Copyright (C) 2017 Armadeus Systems
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/arch/clock.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/arch/mx6ul_pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/gpio.h>
+#include <asm/imx-common/iomux-v3.h>
+#include <asm/io.h>
+#include <common.h>
+#include <environment.h>
+#include <fsl_esdhc.h>
+#include <mmc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_FEC_MXC
+#include <miiphy.h>
+
+#define MDIO_PAD_CTRL ( \
+	PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
+	PAD_CTL_DSE_40ohm \
+)
+
+#define ENET_PAD_CTRL_PU ( \
+	PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
+	PAD_CTL_DSE_40ohm \
+)
+
+#define ENET_PAD_CTRL_PD ( \
+	PAD_CTL_HYS | PAD_CTL_PUS_100K_DOWN | PAD_CTL_SPEED_MED | \
+	PAD_CTL_DSE_40ohm \
+)
+
+#define ENET_CLK_PAD_CTRL ( \
+	PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_LOW | \
+	PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST \
+)
+
+static iomux_v3_cfg_t const fec1_pads[] = {
+	MX6_PAD_GPIO1_IO06__ENET1_MDIO        | MUX_PAD_CTRL(MDIO_PAD_CTRL),
+	MX6_PAD_GPIO1_IO07__ENET1_MDC         | MUX_PAD_CTRL(MDIO_PAD_CTRL),
+	MX6_PAD_ENET1_RX_ER__ENET1_RX_ER      | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
+	MX6_PAD_ENET1_RX_EN__ENET1_RX_EN      | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
+	MX6_PAD_ENET1_RX_DATA1__ENET1_RDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
+	MX6_PAD_ENET1_RX_DATA0__ENET1_RDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
+	MX6_PAD_ENET1_TX_DATA0__ENET1_TDATA00 | MUX_PAD_CTRL(ENET_PAD_CTRL_PU),
+	MX6_PAD_ENET1_TX_DATA1__ENET1_TDATA01 | MUX_PAD_CTRL(ENET_PAD_CTRL_PU),
+	MX6_PAD_ENET1_TX_EN__ENET1_TX_EN      | MUX_PAD_CTRL(ENET_PAD_CTRL_PU),
+	/* PHY Int */
+	MX6_PAD_NAND_DQS__GPIO4_IO16          | MUX_PAD_CTRL(ENET_PAD_CTRL_PU),
+	/* PHY Reset */
+	MX6_PAD_NAND_DATA00__GPIO4_IO02       | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
+	MX6_PAD_ENET1_TX_CLK__ENET1_REF_CLK1  | MUX_PAD_CTRL(ENET_CLK_PAD_CTRL),
+};
+
+int board_phy_config(struct phy_device *phydev)
+{
+	phy_write(phydev, MDIO_DEVAD_NONE, 0x1f, 0x8190);
+
+	if (phydev->drv->config)
+		phydev->drv->config(phydev);
+
+	return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+	struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
+	struct gpio_desc rst;
+	int ret;
+
+	/* Use 50M anatop loopback REF_CLK1 for ENET1,
+	 * clear gpr1[13], set gpr1[17] */
+	clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC1_MASK,
+			IOMUX_GPR1_FEC1_CLOCK_MUX1_SEL_MASK);
+
+	ret = enable_fec_anatop_clock(0, ENET_50MHZ);
+	if (ret)
+		return ret;
+
+	enable_enet_clk(1);
+
+	imx_iomux_v3_setup_multiple_pads(fec1_pads, ARRAY_SIZE(fec1_pads));
+
+	ret = dm_gpio_lookup_name("GPIO4_2", &rst);
+	if (ret) {
+		printf("Cannot get GPIO4_2\n");
+		return ret;
+	}
+
+	ret = dm_gpio_request(&rst, "phy-rst");
+	if (ret) {
+		printf("Cannot request GPIO4_2\n");
+		return ret;
+	}
+
+	dm_gpio_set_dir_flags(&rst, GPIOD_IS_OUT);
+	dm_gpio_set_value(&rst, 0);
+	udelay(1000);
+	dm_gpio_set_value(&rst, 1);
+
+	return fecmxc_initialize(bis);
+}
+#endif /* CONFIG_FEC_MXC */
+
+int board_init(void)
+{
+	/* Address of boot parameters */
+	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
+
+	return 0;
+}
+
+int __weak opos6ul_board_late_init(void)
+{
+	return 0;
+}
+
+int board_late_init(void)
+{
+	struct src *psrc = (struct src *)SRC_BASE_ADDR;
+	unsigned reg = readl(&psrc->sbmr2);
+
+	/* In bootstrap don't use the env vars */
+	if (((reg & 0x3000000) >> 24) == 0x1) {
+		set_default_env(NULL);
+		setenv("preboot", "");
+	}
+
+	return opos6ul_board_late_init();
+}
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
+	return cfg->esdhc_base == USDHC1_BASE_ADDR;
+}
+
+int dram_init(void)
+{
+	gd->ram_size = imx_ddr_size();
+
+	return 0;
+}
+
+#ifdef CONFIG_SPL_BUILD
+#include <asm/arch/mx6-ddr.h>
+#include <asm/arch/opos6ul.h>
+#include <libfdt.h>
+#include <spl.h>
+
+#define USDHC_PAD_CTRL (                                       \
+	PAD_CTL_HYS | PAD_CTL_PUS_47K_UP | PAD_CTL_SPEED_MED | \
+	PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST                   \
+)
+
+struct fsl_esdhc_cfg usdhc_cfg[1] = {
+	{USDHC1_BASE_ADDR, 0, 8},
+};
+
+static iomux_v3_cfg_t const usdhc1_pads[] = {
+	MX6_PAD_SD1_CLK__USDHC1_CLK        | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD1_CMD__USDHC1_CMD        | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD1_DATA0__USDHC1_DATA0    | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD1_DATA1__USDHC1_DATA1    | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD1_DATA2__USDHC1_DATA2    | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD1_DATA3__USDHC1_DATA3    | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_NAND_READY_B__USDHC1_DATA4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_NAND_CE0_B__USDHC1_DATA5   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_NAND_CE1_B__USDHC1_DATA6   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_NAND_CLE__USDHC1_DATA7     | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+};
+
+static struct mx6ul_iomux_grp_regs mx6_grp_ioregs = {
+	.grp_addds = 0x00000030,
+	.grp_ddrmode_ctl = 0x00020000,
+	.grp_b0ds = 0x00000030,
+	.grp_ctlds = 0x00000030,
+	.grp_b1ds = 0x00000030,
+	.grp_ddrpke = 0x00000000,
+	.grp_ddrmode = 0x00020000,
+	.grp_ddr_type = 0x000c0000,
+};
+
+static struct mx6ul_iomux_ddr_regs mx6_ddr_ioregs = {
+	.dram_dqm0 = 0x00000030,
+	.dram_dqm1 = 0x00000030,
+	.dram_ras = 0x00000030,
+	.dram_cas = 0x00000030,
+	.dram_odt0 = 0x00000030,
+	.dram_odt1 = 0x00000030,
+	.dram_sdba2 = 0x00000000,
+	.dram_sdclk_0 = 0x00000008,
+	.dram_sdqs0 = 0x00000038,
+	.dram_sdqs1 = 0x00000030,
+	.dram_reset = 0x00000030,
+};
+
+static struct mx6_mmdc_calibration mx6_mmcd_calib = {
+	.p0_mpwldectrl0 = 0x00070007,
+	.p0_mpdgctrl0 = 0x41490145,
+	.p0_mprddlctl = 0x40404546,
+	.p0_mpwrdlctl = 0x4040524D,
+};
+
+struct mx6_ddr_sysinfo ddr_sysinfo = {
+	.dsize = 0,
+	.cs_density = 20,
+	.ncs = 1,
+	.cs1_mirror = 0,
+	.rtt_wr = 2,
+	.rtt_nom = 1,		/* RTT_Nom = RZQ/2 */
+	.walat = 1,		/* Write additional latency */
+	.ralat = 5,		/* Read additional latency */
+	.mif3_mode = 3,		/* Command prediction working mode */
+	.bi_on = 1,		/* Bank interleaving enabled */
+	.sde_to_rst = 0x10,	/* 14 cycles, 200us (JEDEC default) */
+	.rst_to_cke = 0x23,	/* 33 cycles, 500us (JEDEC default) */
+	.ddr_type = DDR_TYPE_DDR3,
+};
+
+static struct mx6_ddr3_cfg mem_ddr = {
+	.mem_speed = 800,
+	.density = 2,
+	.width = 16,
+	.banks = 8,
+	.rowaddr = 14,
+	.coladdr = 10,
+	.pagesz = 2,
+	.trcd = 1500,
+	.trcmin = 5250,
+	.trasmin = 3750,
+};
+
+int board_mmc_init(bd_t *bis)
+{
+	imx_iomux_v3_setup_multiple_pads(usdhc1_pads, ARRAY_SIZE(usdhc1_pads));
+	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK);
+	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
+}
+
+static void ccgr_init(void)
+{
+	struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+
+	writel(0xFFFFFFFF, &ccm->CCGR0);
+	writel(0xFFFFFFFF, &ccm->CCGR1);
+	writel(0xFFFFFFFF, &ccm->CCGR2);
+	writel(0xFFFFFFFF, &ccm->CCGR3);
+	writel(0xFFFFFFFF, &ccm->CCGR4);
+	writel(0xFFFFFFFF, &ccm->CCGR5);
+	writel(0xFFFFFFFF, &ccm->CCGR6);
+	writel(0xFFFFFFFF, &ccm->CCGR7);
+}
+
+static void spl_dram_init(void)
+{
+	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;
+	int reg = readl(&fuse->gp1);
+
+	/* 512MB of RAM */
+	if (reg & 0x1) {
+		mem_ddr.density = 4;
+		mem_ddr.rowaddr = 15;
+		mem_ddr.trcd = 1375;
+		mem_ddr.trcmin = 4875;
+		mem_ddr.trasmin = 3500;
+	}
+
+	mx6ul_dram_iocfg(mem_ddr.width, &mx6_ddr_ioregs, &mx6_grp_ioregs);
+	mx6_dram_cfg(&ddr_sysinfo, &mx6_mmcd_calib, &mem_ddr);
+}
+
+void board_init_f(ulong dummy)
+{
+	ccgr_init();
+
+	/* setup AIPS and disable watchdog */
+	arch_cpu_init();
+
+	/* setup GP timer */
+	timer_init();
+
+	/* UART clocks enabled and gd valid - init serial console */
+	opos6ul_setup_uart_debug();
+	preloader_console_init();
+
+	/* DDR initialization */
+	spl_dram_init();
+}
+#endif /* CONFIG_SPL_BUILD */