--- /dev/null
+/*
+ * Copyright (C) 2012,2013 Lothar Waßmann <LW@KARO-electronics.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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 <common.h>
+#include <errno.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+#include <lcd.h>
+#include <netdev.h>
+#include <mmc.h>
+#include <fsl_esdhc.h>
+#include <video_fb.h>
+#include <ipu.h>
+#include <mxcfb.h>
+#include <i2c.h>
+#include <linux/fb.h>
+#include <asm/io.h>
+#include <asm/gpio.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/sys_proto.h>
+
+#include "../common/karo.h"
+
+#define TX6_FEC_RST_GPIO IMX_GPIO_NR(7, 6)
+#define TX6_FEC_PWR_GPIO IMX_GPIO_NR(3, 20)
+#define TX6_FEC_INT_GPIO IMX_GPIO_NR(7, 1)
+#define TX6_LED_GPIO IMX_GPIO_NR(2, 20)
+
+#define TX6_LCD_PWR_GPIO IMX_GPIO_NR(2, 31)
+#define TX6_LCD_RST_GPIO IMX_GPIO_NR(3, 29)
+#define TX6_LCD_BACKLIGHT_GPIO IMX_GPIO_NR(1, 1)
+
+#define TX6_RESET_OUT_GPIO IMX_GPIO_NR(7, 12)
+
+#define TEMPERATURE_MIN -40
+#define TEMPERATURE_HOT 80
+#define TEMPERATURE_MAX 125
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define MUX_CFG_SION IOMUX_PAD(0, 0, IOMUX_CONFIG_SION, 0, 0, 0)
+
+static const iomux_v3_cfg_t tx6qdl_pads[] = {
+ /* RESET_OUT */
+ MX6_PAD_GPIO_17__GPIO_7_12,
+
+ /* UART pads */
+#if CONFIG_MXC_UART_BASE == UART1_BASE
+ MX6_PAD_SD3_DAT7__UART1_TXD,
+ MX6_PAD_SD3_DAT6__UART1_RXD,
+ MX6_PAD_SD3_DAT1__UART1_RTS,
+ MX6_PAD_SD3_DAT0__UART1_CTS,
+#endif
+#if CONFIG_MXC_UART_BASE == UART2_BASE
+ MX6_PAD_SD4_DAT4__UART2_RXD,
+ MX6_PAD_SD4_DAT7__UART2_TXD,
+ MX6_PAD_SD4_DAT5__UART2_RTS,
+ MX6_PAD_SD4_DAT6__UART2_CTS,
+#endif
+#if CONFIG_MXC_UART_BASE == UART3_BASE
+ MX6_PAD_EIM_D24__UART3_TXD,
+ MX6_PAD_EIM_D25__UART3_RXD,
+ MX6_PAD_SD3_RST__UART3_RTS,
+ MX6_PAD_SD3_DAT3__UART3_CTS,
+#endif
+ /* internal I2C */
+ MX6_PAD_EIM_D28__I2C1_SDA,
+ MX6_PAD_EIM_D21__I2C1_SCL,
+
+ /* FEC PHY GPIO functions */
+ MX6_PAD_EIM_D20__GPIO_3_20 | MUX_CFG_SION, /* PHY POWER */
+ MX6_PAD_SD3_DAT2__GPIO_7_6 | MUX_CFG_SION, /* PHY RESET */
+ MX6_PAD_SD3_DAT4__GPIO_7_1, /* PHY INT */
+};
+
+static const iomux_v3_cfg_t tx6qdl_fec_pads[] = {
+ /* FEC functions */
+ MX6_PAD_ENET_MDC__ENET_MDC,
+ MX6_PAD_ENET_MDIO__ENET_MDIO,
+ MX6_PAD_GPIO_16__ENET_ANATOP_ETHERNET_REF_OUT,
+ MX6_PAD_ENET_RX_ER__ENET_RX_ER,
+ MX6_PAD_ENET_CRS_DV__ENET_RX_EN,
+ MX6_PAD_ENET_RXD1__ENET_RDATA_1,
+ MX6_PAD_ENET_RXD0__ENET_RDATA_0,
+ MX6_PAD_ENET_TX_EN__ENET_TX_EN,
+ MX6_PAD_ENET_TXD1__ENET_TDATA_1,
+ MX6_PAD_ENET_TXD0__ENET_TDATA_0,
+};
+
+static const struct gpio tx6qdl_gpios[] = {
+ { TX6_RESET_OUT_GPIO, GPIOF_OUTPUT_INIT_HIGH, "#RESET_OUT", },
+ { TX6_FEC_PWR_GPIO, GPIOF_OUTPUT_INIT_HIGH, "FEC PHY PWR", },
+ { TX6_FEC_RST_GPIO, GPIOF_OUTPUT_INIT_LOW, "FEC PHY RESET", },
+ { TX6_FEC_INT_GPIO, GPIOF_INPUT, "FEC PHY INT", },
+};
+
+/*
+ * Functions
+ */
+/* placed in section '.data' to prevent overwriting relocation info
+ * overlayed with bss
+ */
+static u32 wrsr __attribute__((section(".data")));
+
+#define WRSR_POR (1 << 4)
+#define WRSR_TOUT (1 << 1)
+#define WRSR_SFTW (1 << 0)
+
+static void print_reset_cause(void)
+{
+ struct src *src_regs = (struct src *)SRC_BASE_ADDR;
+ void __iomem *wdt_base = (void __iomem *)WDOG1_BASE_ADDR;
+ u32 srsr;
+ char *dlm = "";
+
+ printf("Reset cause: ");
+
+ srsr = readl(&src_regs->srsr);
+ wrsr = readw(wdt_base + 4);
+
+ if (wrsr & WRSR_POR) {
+ printf("%sPOR", dlm);
+ dlm = " | ";
+ }
+ if (srsr & 0x00004) {
+ printf("%sCSU", dlm);
+ dlm = " | ";
+ }
+ if (srsr & 0x00008) {
+ printf("%sIPP USER", dlm);
+ dlm = " | ";
+ }
+ if (srsr & 0x00010) {
+ if (wrsr & WRSR_SFTW) {
+ printf("%sSOFT", dlm);
+ dlm = " | ";
+ }
+ if (wrsr & WRSR_TOUT) {
+ printf("%sWDOG", dlm);
+ dlm = " | ";
+ }
+ }
+ if (srsr & 0x00020) {
+ printf("%sJTAG HIGH-Z", dlm);
+ dlm = " | ";
+ }
+ if (srsr & 0x00040) {
+ printf("%sJTAG SW", dlm);
+ dlm = " | ";
+ }
+ if (srsr & 0x10000) {
+ printf("%sWARM BOOT", dlm);
+ dlm = " | ";
+ }
+ if (dlm[0] == '\0')
+ printf("unknown");
+
+ printf("\n");
+}
+
+int read_cpu_temperature(void);
+int check_cpu_temperature(int boot);
+
+static void tx6qdl_print_cpuinfo(void)
+{
+ u32 cpurev = get_cpu_rev();
+ char *cpu_str = "?";
+
+ switch ((cpurev >> 12) & 0xff) {
+ case MXC_CPU_MX6SL:
+ cpu_str = "SL";
+ break;
+ case MXC_CPU_MX6DL:
+ cpu_str = "DL";
+ break;
+ case MXC_CPU_MX6SOLO:
+ cpu_str = "SOLO";
+ break;
+ case MXC_CPU_MX6Q:
+ cpu_str = "Q";
+ break;
+ }
+
+ printf("CPU: Freescale i.MX6%s rev%d.%d at %d MHz\n",
+ cpu_str,
+ (cpurev & 0x000F0) >> 4,
+ (cpurev & 0x0000F) >> 0,
+ mxc_get_clock(MXC_ARM_CLK) / 1000000);
+
+ print_reset_cause();
+ check_cpu_temperature(1);
+}
+
+#define RN5T618_NOETIMSET 0x11
+#define RN5T618_LDORTC1_SLOT 0x2a
+#define RN5T618_DC1CTL 0x2c
+#define RN5T618_DC1CTL2 0x2d
+#define RN5T618_DC2CTL 0x2e
+#define RN5T618_DC2CTL2 0x2f
+#define RN5T618_DC3CTL 0x30
+#define RN5T618_DC3CTL2 0x31
+#define RN5T618_DC1DAC 0x36 /* CORE */
+#define RN5T618_DC2DAC 0x37 /* SOC */
+#define RN5T618_DC3DAC 0x38 /* DDR */
+#define RN5T618_DC1DAC_SLP 0x3b
+#define RN5T618_DC2DAC_SLP 0x3c
+#define RN5T618_DC3DAC_SLP 0x3d
+#define RN5T618_LDOEN1 0x44
+#define RN5T618_LDODIS 0x46
+#define RN5T618_LDOEN2 0x48
+#define RN5T618_LDO3DAC 0x4e /* IO */
+#define RN5T618_LDORTCDAC 0x56 /* VBACKUP */
+
+#define VDD_RTC_VAL mV_to_regval_rtc(3000 * 10)
+#define VDD_HIGH_VAL mV_to_regval3(3000 * 10)
+#define VDD_HIGH_VAL_LP mV_to_regval3(3000 * 10)
+#define VDD_CORE_VAL mV_to_regval(1425 * 10)
+#define VDD_CORE_VAL_LP mV_to_regval(900 * 10)
+#define VDD_SOC_VAL mV_to_regval(1425 * 10)
+#define VDD_SOC_VAL_LP mV_to_regval(900 * 10)
+#define VDD_DDR_VAL mV_to_regval(1500 * 10)
+#define VDD_DDR_VAL_LP mV_to_regval(1500 * 10)
+
+/* calculate voltages in 10mV */
+/* DCDC1-3 */
+#define mV_to_regval(mV) DIV_ROUND(((((mV) < 6000) ? 6000 : (mV)) - 6000), 125)
+#define regval_to_mV(v) (((v) * 125 + 6000))
+
+/* LDO1-2 */
+#define mV_to_regval2(mV) DIV_ROUND(((((mV) < 9000) ? 9000 : (mV)) - 9000), 250)
+#define regval2_to_mV(v) (((v) * 250 + 9000))
+
+/* LDO3 */
+#define mV_to_regval3(mV) DIV_ROUND(((((mV) < 6000) ? 6000 : (mV)) - 6000), 250)
+#define regval3_to_mV(v) (((v) * 250 + 6000))
+
+/* LDORTC */
+#define mV_to_regval_rtc(mV) DIV_ROUND(((((mV) < 17000) ? 17000 : (mV)) - 17000), 250)
+#define regval_rtc_to_mV(v) (((v) * 250 + 17000))
+
+static struct rn5t618_regs {
+ u8 addr;
+ u8 val;
+ u8 mask;
+} rn5t618_regs[] = {
+ { RN5T618_NOETIMSET, 0, },
+ { RN5T618_DC1DAC, VDD_CORE_VAL, },
+ { RN5T618_DC2DAC, VDD_SOC_VAL, },
+ { RN5T618_DC3DAC, VDD_DDR_VAL, },
+ { RN5T618_DC1DAC_SLP, VDD_CORE_VAL_LP, },
+ { RN5T618_DC2DAC_SLP, VDD_SOC_VAL_LP, },
+ { RN5T618_DC3DAC_SLP, VDD_DDR_VAL_LP, },
+ { RN5T618_LDOEN1, 0x01f, ~0x1f, },
+ { RN5T618_LDOEN2, 0x10, ~0x30, },
+ { RN5T618_LDODIS, 0x00, },
+ { RN5T618_LDO3DAC, VDD_HIGH_VAL, },
+ { RN5T618_LDORTCDAC, VDD_RTC_VAL, },
+ { RN5T618_LDORTC1_SLOT, 0x0f, ~0x3f, },
+};
+
+static int tx6_rn5t618_setup_regs(struct rn5t618_regs *r, size_t count)
+{
+ int ret;
+ int i;
+
+ for (i = 0; i < count; i++, r++) {
+#ifdef DEBUG
+ unsigned char value;
+
+ ret = i2c_read(CONFIG_SYS_I2C_SLAVE, r->addr, 1, &value, 1);
+ if ((value & ~r->mask) != r->val) {
+ printf("Changing PMIC reg %02x from %02x to %02x\n",
+ r->addr, value, r->val);
+ }
+ if (ret) {
+ printf("%s: failed to read PMIC register %02x: %d\n",
+ __func__, r->addr, ret);
+ return ret;
+ }
+#endif
+ ret = i2c_write(CONFIG_SYS_I2C_SLAVE,
+ r->addr, 1, &r->val, 1);
+ if (ret) {
+ printf("%s: failed to write PMIC register %02x: %d\n",
+ __func__, r->addr, ret);
+ return ret;
+ }
+#ifdef DEBUG
+ ret = i2c_read(CONFIG_SYS_I2C_SLAVE, r->addr, 1, &value, 1);
+ printf("PMIC reg %02x is %02x\n", r->addr, value);
+#endif
+ }
+ return 0;
+}
+
+static int setup_pmic_voltages(void)
+{
+ int ret;
+ unsigned char value;
+
+ ret = i2c_probe(CONFIG_SYS_I2C_SLAVE);
+ if (ret != 0) {
+ printf("Failed to initialize I2C\n");
+ return ret;
+ }
+
+ ret = i2c_read(CONFIG_SYS_I2C_SLAVE, 0x11, 1, &value, 1);
+ if (ret) {
+ printf("%s: i2c_read error: %d\n", __func__, ret);
+ return ret;
+ }
+
+ ret = tx6_rn5t618_setup_regs(rn5t618_regs, ARRAY_SIZE(rn5t618_regs));
+ if (ret)
+ return ret;
+
+ printf("VDDCORE set to %umV\n",
+ DIV_ROUND(regval_to_mV(VDD_CORE_VAL), 10));
+ printf("VDDSOC set to %umV\n",
+ DIV_ROUND(regval_to_mV(VDD_SOC_VAL), 10));
+
+ return ret;
+}
+
+int board_early_init_f(void)
+{
+ gpio_request_array(tx6qdl_gpios, ARRAY_SIZE(tx6qdl_gpios));
+ imx_iomux_v3_setup_multiple_pads(tx6qdl_pads, ARRAY_SIZE(tx6qdl_pads));
+
+ return 0;
+}
+
+int board_init(void)
+{
+ int ret;
+
+ /* Address of boot parameters */
+ gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x1000;
+ gd->bd->bi_arch_number = -1;
+
+ if (ctrlc()) {
+ printf("CTRL-C detected; Skipping PMIC setup\n");
+ return 1;
+ }
+
+ ret = setup_pmic_voltages();
+ if (ret) {
+ printf("Failed to setup PMIC voltages\n");
+ hang();
+ }
+ return 0;
+}
+
+int dram_init(void)
+{
+ /* dram_init must store complete ramsize in gd->ram_size */
+ gd->ram_size = get_ram_size((void *)CONFIG_SYS_SDRAM_BASE,
+ PHYS_SDRAM_1_SIZE);
+ return 0;
+}
+
+void dram_init_banksize(void)
+{
+ gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
+ gd->bd->bi_dram[0].size = get_ram_size((void *)PHYS_SDRAM_1,
+ PHYS_SDRAM_1_SIZE);
+#if CONFIG_NR_DRAM_BANKS > 1
+ gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
+ gd->bd->bi_dram[1].size = get_ram_size((void *)PHYS_SDRAM_2,
+ PHYS_SDRAM_2_SIZE);
+#endif
+}
+
+#ifdef CONFIG_CMD_MMC
+#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP | \
+ PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm | \
+ PAD_CTL_SRE_FAST | PAD_CTL_HYS)
+
+static const iomux_v3_cfg_t mmc0_pads[] = {
+ MX6_PAD_SD1_CMD__USDHC1_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD1_CLK__USDHC1_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD1_DAT0__USDHC1_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD1_DAT1__USDHC1_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD1_DAT2__USDHC1_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD1_DAT3__USDHC1_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ /* SD1 CD */
+ MX6_PAD_SD3_CMD__GPIO_7_2,
+};
+
+static const iomux_v3_cfg_t mmc1_pads[] = {
+ MX6_PAD_SD2_CMD__USDHC2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD2_CLK__USDHC2_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD2_DAT0__USDHC2_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD2_DAT1__USDHC2_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD2_DAT2__USDHC2_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD2_DAT3__USDHC2_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ /* SD2 CD */
+ MX6_PAD_SD3_CLK__GPIO_7_3,
+};
+
+static const iomux_v3_cfg_t mmc3_pads[] = {
+ MX6_PAD_SD4_CMD__USDHC4_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD4_CLK__USDHC4_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD4_DAT0__USDHC4_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD4_DAT1__USDHC4_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD4_DAT2__USDHC4_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ MX6_PAD_SD4_DAT3__USDHC4_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+ /* eMMC RESET */
+ MX6_PAD_NANDF_ALE__USDHC4_RST,
+};
+
+static struct tx6_esdhc_cfg {
+ const iomux_v3_cfg_t *pads;
+ int num_pads;
+ enum mxc_clock clkid;
+ struct fsl_esdhc_cfg cfg;
+ int cd_gpio;
+} tx6qdl_esdhc_cfg[] = {
+ {
+ .pads = mmc3_pads,
+ .num_pads = ARRAY_SIZE(mmc3_pads),
+ .clkid = MXC_ESDHC4_CLK,
+ .cfg = {
+ .esdhc_base = (void __iomem *)USDHC4_BASE_ADDR,
+ .max_bus_width = 4,
+ },
+ .cd_gpio = -EINVAL,
+ },
+ {
+ .pads = mmc0_pads,
+ .num_pads = ARRAY_SIZE(mmc0_pads),
+ .clkid = MXC_ESDHC_CLK,
+ .cfg = {
+ .esdhc_base = (void __iomem *)USDHC1_BASE_ADDR,
+ .max_bus_width = 4,
+ },
+ .cd_gpio = IMX_GPIO_NR(7, 2),
+ },
+ {
+ .pads = mmc1_pads,
+ .num_pads = ARRAY_SIZE(mmc1_pads),
+ .clkid = MXC_ESDHC2_CLK,
+ .cfg = {
+ .esdhc_base = (void __iomem *)USDHC2_BASE_ADDR,
+ .max_bus_width = 4,
+ },
+ .cd_gpio = IMX_GPIO_NR(7, 3),
+ },
+};
+
+static inline struct tx6_esdhc_cfg *to_tx6_esdhc_cfg(struct fsl_esdhc_cfg *cfg)
+{
+ return container_of(cfg, struct tx6_esdhc_cfg, cfg);
+}
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+ struct tx6_esdhc_cfg *cfg = to_tx6_esdhc_cfg(mmc->priv);
+
+ if (cfg->cd_gpio < 0)
+ return 1;
+
+ debug("SD card %d is %spresent\n",
+ cfg - tx6qdl_esdhc_cfg,
+ gpio_get_value(cfg->cd_gpio) ? "NOT " : "");
+ return !gpio_get_value(cfg->cd_gpio);
+}
+
+int board_mmc_init(bd_t *bis)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(tx6qdl_esdhc_cfg); i++) {
+ struct mmc *mmc;
+ struct tx6_esdhc_cfg *cfg = &tx6qdl_esdhc_cfg[i];
+ int ret;
+
+ cfg->cfg.sdhc_clk = mxc_get_clock(cfg->clkid);
+ imx_iomux_v3_setup_multiple_pads(cfg->pads, cfg->num_pads);
+
+ if (cfg->cd_gpio >= 0) {
+ ret = gpio_request_one(cfg->cd_gpio,
+ GPIOF_INPUT, "MMC CD");
+ if (ret) {
+ printf("Error %d requesting GPIO%d_%d\n",
+ ret, cfg->cd_gpio / 32, cfg->cd_gpio % 32);
+ continue;
+ }
+ }
+
+ debug("%s: Initializing MMC slot %d\n", __func__, i);
+ fsl_esdhc_initialize(bis, &cfg->cfg);
+
+ mmc = find_mmc_device(i);
+ if (mmc == NULL)
+ continue;
+ if (board_mmc_getcd(mmc))
+ mmc_init(mmc);
+ }
+ return 0;
+}
+#endif /* CONFIG_CMD_MMC */
+
+#ifdef CONFIG_FEC_MXC
+
+#define FEC_PAD_CTL (PAD_CTL_DVS | PAD_CTL_DSE_HIGH | \
+ PAD_CTL_SRE_FAST)
+#define FEC_PAD_CTL2 (PAD_CTL_DVS | PAD_CTL_SRE_FAST)
+#define GPIO_PAD_CTL (PAD_CTL_DVS | PAD_CTL_DSE_HIGH)
+
+#ifndef ETH_ALEN
+#define ETH_ALEN 6
+#endif
+
+int board_eth_init(bd_t *bis)
+{
+ int ret;
+
+ /* delay at least 21ms for the PHY internal POR signal to deassert */
+ udelay(22000);
+
+ imx_iomux_v3_setup_multiple_pads(tx6qdl_fec_pads, ARRAY_SIZE(tx6qdl_fec_pads));
+
+ /* Deassert RESET to the external phy */
+ gpio_set_value(TX6_FEC_RST_GPIO, 1);
+
+ ret = cpu_eth_init(bis);
+ if (ret)
+ printf("cpu_eth_init() failed: %d\n", ret);
+
+ return ret;
+}
+#endif /* CONFIG_FEC_MXC */
+
+enum {
+ LED_STATE_INIT = -1,
+ LED_STATE_OFF,
+ LED_STATE_ON,
+};
+
+static inline int calc_blink_rate(int tmp)
+{
+ return CONFIG_SYS_HZ + CONFIG_SYS_HZ / 10 -
+ (tmp - TEMPERATURE_MIN) * CONFIG_SYS_HZ /
+ (TEMPERATURE_HOT - TEMPERATURE_MIN);
+}
+
+void show_activity(int arg)
+{
+ static int led_state = LED_STATE_INIT;
+ static int blink_rate;
+ static ulong last;
+
+ if (led_state == LED_STATE_INIT) {
+ last = get_timer(0);
+ gpio_set_value(TX6_LED_GPIO, 1);
+ led_state = LED_STATE_ON;
+ blink_rate = calc_blink_rate(check_cpu_temperature(0));
+ } else {
+ if (get_timer(last) > blink_rate) {
+ blink_rate = calc_blink_rate(check_cpu_temperature(0));
+ last = get_timer_masked();
+ if (led_state == LED_STATE_ON) {
+ gpio_set_value(TX6_LED_GPIO, 0);
+ } else {
+ gpio_set_value(TX6_LED_GPIO, 1);
+ }
+ led_state = 1 - led_state;
+ }
+ }
+}
+
+static const iomux_v3_cfg_t stk5_pads[] = {
+ /* SW controlled LED on STK5 baseboard */
+ MX6_PAD_EIM_A18__GPIO_2_20,
+
+ /* LCD data pins */
+ MX6_PAD_DISP0_DAT0__IPU1_DISP0_DAT_0,
+ MX6_PAD_DISP0_DAT1__IPU1_DISP0_DAT_1,
+ MX6_PAD_DISP0_DAT2__IPU1_DISP0_DAT_2,
+ MX6_PAD_DISP0_DAT3__IPU1_DISP0_DAT_3,
+ MX6_PAD_DISP0_DAT4__IPU1_DISP0_DAT_4,
+ MX6_PAD_DISP0_DAT5__IPU1_DISP0_DAT_5,
+ MX6_PAD_DISP0_DAT6__IPU1_DISP0_DAT_6,
+ MX6_PAD_DISP0_DAT7__IPU1_DISP0_DAT_7,
+ MX6_PAD_DISP0_DAT8__IPU1_DISP0_DAT_8,
+ MX6_PAD_DISP0_DAT9__IPU1_DISP0_DAT_9,
+ MX6_PAD_DISP0_DAT10__IPU1_DISP0_DAT_10,
+ MX6_PAD_DISP0_DAT11__IPU1_DISP0_DAT_11,
+ MX6_PAD_DISP0_DAT12__IPU1_DISP0_DAT_12,
+ MX6_PAD_DISP0_DAT13__IPU1_DISP0_DAT_13,
+ MX6_PAD_DISP0_DAT14__IPU1_DISP0_DAT_14,
+ MX6_PAD_DISP0_DAT15__IPU1_DISP0_DAT_15,
+ MX6_PAD_DISP0_DAT16__IPU1_DISP0_DAT_16,
+ MX6_PAD_DISP0_DAT17__IPU1_DISP0_DAT_17,
+ MX6_PAD_DISP0_DAT18__IPU1_DISP0_DAT_18,
+ MX6_PAD_DISP0_DAT19__IPU1_DISP0_DAT_19,
+ MX6_PAD_DISP0_DAT20__IPU1_DISP0_DAT_20,
+ MX6_PAD_DISP0_DAT21__IPU1_DISP0_DAT_21,
+ MX6_PAD_DISP0_DAT22__IPU1_DISP0_DAT_22,
+ MX6_PAD_DISP0_DAT23__IPU1_DISP0_DAT_23,
+ MX6_PAD_DI0_PIN2__IPU1_DI0_PIN2, /* HSYNC */
+ MX6_PAD_DI0_PIN3__IPU1_DI0_PIN3, /* VSYNC */
+ MX6_PAD_DI0_PIN15__IPU1_DI0_PIN15, /* OE_ACD */
+ MX6_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK, /* LSCLK */
+
+ /* I2C bus on DIMM pins 40/41 */
+ MX6_PAD_GPIO_6__I2C3_SDA,
+ MX6_PAD_GPIO_3__I2C3_SCL,
+
+ /* TSC200x PEN IRQ */
+ MX6_PAD_EIM_D26__GPIO_3_26,
+
+ /* EDT-FT5x06 Polytouch panel */
+ MX6_PAD_NANDF_CS2__GPIO_6_15, /* IRQ */
+ MX6_PAD_EIM_A16__GPIO_2_22, /* RESET */
+ MX6_PAD_EIM_A17__GPIO_2_21, /* WAKE */
+
+ /* USBH1 */
+ MX6_PAD_EIM_D31__GPIO_3_31, /* VBUSEN */
+ MX6_PAD_EIM_D30__GPIO_3_30, /* OC */
+ /* USBOTG */
+ MX6_PAD_EIM_D23__GPIO_3_23, /* USBOTG ID */
+ MX6_PAD_GPIO_7__GPIO_1_7, /* VBUSEN */
+ MX6_PAD_GPIO_8__GPIO_1_8, /* OC */
+};
+
+static const struct gpio stk5_gpios[] = {
+ { TX6_LED_GPIO, GPIOF_OUTPUT_INIT_LOW, "HEARTBEAT LED", },
+
+ { IMX_GPIO_NR(3, 23), GPIOF_INPUT, "USBOTG ID", },
+ { IMX_GPIO_NR(1, 8), GPIOF_INPUT, "USBOTG OC", },
+ { IMX_GPIO_NR(1, 7), GPIOF_OUTPUT_INIT_LOW, "USBOTG VBUS enable", },
+ { IMX_GPIO_NR(3, 30), GPIOF_INPUT, "USBH1 OC", },
+ { IMX_GPIO_NR(3, 31), GPIOF_OUTPUT_INIT_LOW, "USBH1 VBUS enable", },
+};
+
+#ifdef CONFIG_LCD
+static u16 tx6_cmap[256];
+vidinfo_t panel_info = {
+ /* set to max. size supported by SoC */
+ .vl_col = 1920,
+ .vl_row = 1080,
+
+ .vl_bpix = LCD_COLOR24, /* Bits per pixel, 0: 1bpp, 1: 2bpp, 2: 4bpp, 3: 8bpp ... */
+ .cmap = tx6_cmap,
+};
+
+static struct fb_videomode tx6_fb_modes[] = {
+#ifndef CONFIG_SYS_LVDS_IF
+ {
+ /* Standard VGA timing */
+ .name = "VGA",
+ .refresh = 60,
+ .xres = 640,
+ .yres = 480,
+ .pixclock = KHZ2PICOS(25175),
+ .left_margin = 48,
+ .hsync_len = 96,
+ .right_margin = 16,
+ .upper_margin = 31,
+ .vsync_len = 2,
+ .lower_margin = 12,
+ .sync = FB_SYNC_CLK_LAT_FALL,
+ },
+ {
+ /* Emerging ETV570 640 x 480 display. Syncs low active,
+ * DE high active, 115.2 mm x 86.4 mm display area
+ * VGA compatible timing
+ */
+ .name = "ETV570",
+ .refresh = 60,
+ .xres = 640,
+ .yres = 480,
+ .pixclock = KHZ2PICOS(25175),
+ .left_margin = 114,
+ .hsync_len = 30,
+ .right_margin = 16,
+ .upper_margin = 32,
+ .vsync_len = 3,
+ .lower_margin = 10,
+ .sync = FB_SYNC_CLK_LAT_FALL,
+ },
+ {
+ /* Emerging ET0350G0DH6 320 x 240 display.
+ * 70.08 mm x 52.56 mm display area.
+ */
+ .name = "ET0350",
+ .refresh = 60,
+ .xres = 320,
+ .yres = 240,
+ .pixclock = KHZ2PICOS(6500),
+ .left_margin = 68 - 34,
+ .hsync_len = 34,
+ .right_margin = 20,
+ .upper_margin = 18 - 3,
+ .vsync_len = 3,
+ .lower_margin = 4,
+ .sync = FB_SYNC_CLK_LAT_FALL,
+ },
+ {
+ /* Emerging ET0430G0DH6 480 x 272 display.
+ * 95.04 mm x 53.856 mm display area.
+ */
+ .name = "ET0430",
+ .refresh = 60,
+ .xres = 480,
+ .yres = 272,
+ .pixclock = KHZ2PICOS(9000),
+ .left_margin = 2,
+ .hsync_len = 41,
+ .right_margin = 2,
+ .upper_margin = 2,
+ .vsync_len = 10,
+ .lower_margin = 2,
+ .sync = FB_SYNC_CLK_LAT_FALL,
+ },
+ {
+ /* Emerging ET0500G0DH6 800 x 480 display.
+ * 109.6 mm x 66.4 mm display area.
+ */
+ .name = "ET0500",
+ .refresh = 60,
+ .xres = 800,
+ .yres = 480,
+ .pixclock = KHZ2PICOS(33260),
+ .left_margin = 216 - 128,
+ .hsync_len = 128,
+ .right_margin = 1056 - 800 - 216,
+ .upper_margin = 35 - 2,
+ .vsync_len = 2,
+ .lower_margin = 525 - 480 - 35,
+ .sync = FB_SYNC_CLK_LAT_FALL,
+ },
+ {
+ /* Emerging ETQ570G0DH6 320 x 240 display.
+ * 115.2 mm x 86.4 mm display area.
+ */
+ .name = "ETQ570",
+ .refresh = 60,
+ .xres = 320,
+ .yres = 240,
+ .pixclock = KHZ2PICOS(6400),
+ .left_margin = 38,
+ .hsync_len = 30,
+ .right_margin = 30,
+ .upper_margin = 16, /* 15 according to datasheet */
+ .vsync_len = 3, /* TVP -> 1>x>5 */
+ .lower_margin = 4, /* 4.5 according to datasheet */
+ .sync = FB_SYNC_CLK_LAT_FALL,
+ },
+ {
+ /* Emerging ET0700G0DH6 800 x 480 display.
+ * 152.4 mm x 91.44 mm display area.
+ */
+ .name = "ET0700",
+ .refresh = 60,
+ .xres = 800,
+ .yres = 480,
+ .pixclock = KHZ2PICOS(33260),
+ .left_margin = 216 - 128,
+ .hsync_len = 128,
+ .right_margin = 1056 - 800 - 216,
+ .upper_margin = 35 - 2,
+ .vsync_len = 2,
+ .lower_margin = 525 - 480 - 35,
+ .sync = FB_SYNC_CLK_LAT_FALL,
+ },
+ {
+ /* Emerging ET070001DM6 800 x 480 display.
+ * 152.4 mm x 91.44 mm display area.
+ */
+ .name = "ET070001DM6",
+ .refresh = 60,
+ .xres = 800,
+ .yres = 480,
+ .pixclock = KHZ2PICOS(33260),
+ .left_margin = 216 - 128,
+ .hsync_len = 128,
+ .right_margin = 1056 - 800 - 216,
+ .upper_margin = 35 - 2,
+ .vsync_len = 2,
+ .lower_margin = 525 - 480 - 35,
+ .sync = 0,
+ },
+#else
+ {
+ /* HannStar HSD100PXN1
+ * 202.7m mm x 152.06 mm display area.
+ */
+ .name = "HSD100PXN1",
+ .refresh = 60,
+ .xres = 1024,
+ .yres = 768,
+ .pixclock = KHZ2PICOS(65000),
+ .left_margin = 0,
+ .hsync_len = 0,
+ .right_margin = 320,
+ .upper_margin = 0,
+ .vsync_len = 0,
+ .lower_margin = 38,
+ .sync = FB_SYNC_CLK_LAT_FALL,
+ },
+#endif
+ {
+ /* unnamed entry for assigning parameters parsed from 'video_mode' string */
+ .refresh = 60,
+ .left_margin = 48,
+ .hsync_len = 96,
+ .right_margin = 16,
+ .upper_margin = 31,
+ .vsync_len = 2,
+ .lower_margin = 12,
+ .sync = FB_SYNC_CLK_LAT_FALL,
+ },
+};
+
+static int lcd_enabled = 1;
+static int lcd_bl_polarity;
+
+static int lcd_backlight_polarity(void)
+{
+ return lcd_bl_polarity;
+}
+
+void lcd_enable(void)
+{
+ /* HACK ALERT:
+ * global variable from common/lcd.c
+ * Set to 0 here to prevent messages from going to LCD
+ * rather than serial console
+ */
+ lcd_is_enabled = 0;
+
+ if (lcd_enabled) {
+ karo_load_splashimage(1);
+
+ debug("Switching LCD on\n");
+ gpio_set_value(TX6_LCD_PWR_GPIO, 1);
+ udelay(100);
+ gpio_set_value(TX6_LCD_RST_GPIO, 1);
+ udelay(300000);
+ gpio_set_value(TX6_LCD_BACKLIGHT_GPIO, lcd_backlight_polarity());
+ }
+}
+
+void lcd_disable(void)
+{
+ if (lcd_enabled) {
+ printf("Disabling LCD\n");
+ ipuv3_fb_shutdown();
+ }
+}
+
+void lcd_panel_disable(void)
+{
+ if (lcd_enabled) {
+ debug("Switching LCD off\n");
+ gpio_set_value(TX6_LCD_BACKLIGHT_GPIO, !lcd_backlight_polarity());
+ gpio_set_value(TX6_LCD_RST_GPIO, 0);
+ gpio_set_value(TX6_LCD_PWR_GPIO, 0);
+ }
+}
+
+static const iomux_v3_cfg_t stk5_lcd_pads[] = {
+ /* LCD RESET */
+ MX6_PAD_EIM_D29__GPIO_3_29,
+ /* LCD POWER_ENABLE */
+ MX6_PAD_EIM_EB3__GPIO_2_31,
+ /* LCD Backlight (PWM) */
+ MX6_PAD_GPIO_1__GPIO_1_1,
+
+ /* Display */
+ MX6_PAD_DI0_DISP_CLK__IPU1_DI0_DISP_CLK,
+ MX6_PAD_DI0_PIN15__IPU1_DI0_PIN15,
+ MX6_PAD_DI0_PIN2__IPU1_DI0_PIN2,
+ MX6_PAD_DI0_PIN3__IPU1_DI0_PIN3,
+ MX6_PAD_DISP0_DAT0__IPU1_DISP0_DAT_0,
+ MX6_PAD_DISP0_DAT1__IPU1_DISP0_DAT_1,
+ MX6_PAD_DISP0_DAT2__IPU1_DISP0_DAT_2,
+ MX6_PAD_DISP0_DAT3__IPU1_DISP0_DAT_3,
+ MX6_PAD_DISP0_DAT4__IPU1_DISP0_DAT_4,
+ MX6_PAD_DISP0_DAT5__IPU1_DISP0_DAT_5,
+ MX6_PAD_DISP0_DAT6__IPU1_DISP0_DAT_6,
+ MX6_PAD_DISP0_DAT7__IPU1_DISP0_DAT_7,
+ MX6_PAD_DISP0_DAT8__IPU1_DISP0_DAT_8,
+ MX6_PAD_DISP0_DAT9__IPU1_DISP0_DAT_9,
+ MX6_PAD_DISP0_DAT10__IPU1_DISP0_DAT_10,
+ MX6_PAD_DISP0_DAT11__IPU1_DISP0_DAT_11,
+ MX6_PAD_DISP0_DAT12__IPU1_DISP0_DAT_12,
+ MX6_PAD_DISP0_DAT13__IPU1_DISP0_DAT_13,
+ MX6_PAD_DISP0_DAT14__IPU1_DISP0_DAT_14,
+ MX6_PAD_DISP0_DAT15__IPU1_DISP0_DAT_15,
+ MX6_PAD_DISP0_DAT16__IPU1_DISP0_DAT_16,
+ MX6_PAD_DISP0_DAT17__IPU1_DISP0_DAT_17,
+ MX6_PAD_DISP0_DAT18__IPU1_DISP0_DAT_18,
+ MX6_PAD_DISP0_DAT19__IPU1_DISP0_DAT_19,
+ MX6_PAD_DISP0_DAT20__IPU1_DISP0_DAT_20,
+ MX6_PAD_DISP0_DAT21__IPU1_DISP0_DAT_21,
+ MX6_PAD_DISP0_DAT22__IPU1_DISP0_DAT_22,
+ MX6_PAD_DISP0_DAT23__IPU1_DISP0_DAT_23,
+};
+
+static const struct gpio stk5_lcd_gpios[] = {
+ { TX6_LCD_RST_GPIO, GPIOF_OUTPUT_INIT_LOW, "LCD RESET", },
+ { TX6_LCD_PWR_GPIO, GPIOF_OUTPUT_INIT_LOW, "LCD POWER", },
+ { TX6_LCD_BACKLIGHT_GPIO, GPIOF_OUTPUT_INIT_HIGH, "LCD BACKLIGHT", },
+};
+
+void lcd_ctrl_init(void *lcdbase)
+{
+ int color_depth = 24;
+ const char *video_mode = karo_get_vmode(getenv("video_mode"));
+ const char *vm;
+ unsigned long val;
+ int refresh = 60;
+ struct fb_videomode *p = &tx6_fb_modes[0];
+ struct fb_videomode fb_mode;
+ int xres_set = 0, yres_set = 0, bpp_set = 0, refresh_set = 0;
+ int pix_fmt;
+ int lcd_bus_width;
+ unsigned long di_clk_rate = 65000000;
+
+ if (!lcd_enabled) {
+ debug("LCD disabled\n");
+ return;
+ }
+
+ if (had_ctrlc() || (wrsr & WRSR_TOUT)) {
+ debug("Disabling LCD\n");
+ lcd_enabled = 0;
+ setenv("splashimage", NULL);
+ return;
+ }
+
+ karo_fdt_move_fdt();
+ lcd_bl_polarity = karo_fdt_get_backlight_polarity(working_fdt);
+
+ if (video_mode == NULL) {
+ debug("Disabling LCD\n");
+ lcd_enabled = 0;
+ return;
+ }
+ vm = video_mode;
+ if (karo_fdt_get_fb_mode(working_fdt, video_mode, &fb_mode) == 0) {
+ p = &fb_mode;
+ debug("Using video mode from FDT\n");
+ vm += strlen(vm);
+ if (fb_mode.xres > panel_info.vl_col ||
+ fb_mode.yres > panel_info.vl_row) {
+ printf("video resolution from DT: %dx%d exceeds hardware limits: %dx%d\n",
+ fb_mode.xres, fb_mode.yres,
+ panel_info.vl_col, panel_info.vl_row);
+ lcd_enabled = 0;
+ return;
+ }
+ }
+ if (p->name != NULL)
+ debug("Trying compiled-in video modes\n");
+ while (p->name != NULL) {
+ if (strcmp(p->name, vm) == 0) {
+ debug("Using video mode: '%s'\n", p->name);
+ vm += strlen(vm);
+ break;
+ }
+ p++;
+ }
+ if (*vm != '\0')
+ debug("Trying to decode video_mode: '%s'\n", vm);
+ while (*vm != '\0') {
+ if (*vm >= '0' && *vm <= '9') {
+ char *end;
+
+ val = simple_strtoul(vm, &end, 0);
+ if (end > vm) {
+ if (!xres_set) {
+ if (val > panel_info.vl_col)
+ val = panel_info.vl_col;
+ p->xres = val;
+ panel_info.vl_col = val;
+ xres_set = 1;
+ } else if (!yres_set) {
+ if (val > panel_info.vl_row)
+ val = panel_info.vl_row;
+ p->yres = val;
+ panel_info.vl_row = val;
+ yres_set = 1;
+ } else if (!bpp_set) {
+ switch (val) {
+ case 32:
+ case 24:
+ if (is_lvds())
+ pix_fmt = IPU_PIX_FMT_LVDS888;
+ /* fallthru */
+ case 16:
+ case 8:
+ color_depth = val;
+ break;
+
+ case 18:
+ if (is_lvds()) {
+ color_depth = val;
+ break;
+ }
+ /* fallthru */
+ default:
+ printf("Invalid color depth: '%.*s' in video_mode; using default: '%u'\n",
+ end - vm, vm, color_depth);
+ }
+ bpp_set = 1;
+ } else if (!refresh_set) {
+ refresh = val;
+ refresh_set = 1;
+ }
+ }
+ vm = end;
+ }
+ switch (*vm) {
+ case '@':
+ bpp_set = 1;
+ /* fallthru */
+ case '-':
+ yres_set = 1;
+ /* fallthru */
+ case 'x':
+ xres_set = 1;
+ /* fallthru */
+ case 'M':
+ case 'R':
+ vm++;
+ break;
+
+ default:
+ if (*vm != '\0')
+ vm++;
+ }
+ }
+ if (p->xres == 0 || p->yres == 0) {
+ printf("Invalid video mode: %s\n", getenv("video_mode"));
+ lcd_enabled = 0;
+ printf("Supported video modes are:");
+ for (p = &tx6_fb_modes[0]; p->name != NULL; p++) {
+ printf(" %s", p->name);
+ }
+ printf("\n");
+ return;
+ }
+ if (p->xres > panel_info.vl_col || p->yres > panel_info.vl_row) {
+ printf("video resolution: %dx%d exceeds hardware limits: %dx%d\n",
+ p->xres, p->yres, panel_info.vl_col, panel_info.vl_row);
+ lcd_enabled = 0;
+ return;
+ }
+ panel_info.vl_col = p->xres;
+ panel_info.vl_row = p->yres;
+
+ switch (color_depth) {
+ case 8:
+ panel_info.vl_bpix = LCD_COLOR8;
+ break;
+ case 16:
+ panel_info.vl_bpix = LCD_COLOR16;
+ break;
+ default:
+ panel_info.vl_bpix = LCD_COLOR24;
+ }
+
+ p->pixclock = KHZ2PICOS(refresh *
+ (p->xres + p->left_margin + p->right_margin + p->hsync_len) *
+ (p->yres + p->upper_margin + p->lower_margin + p->vsync_len) /
+ 1000);
+ debug("Pixel clock set to %lu.%03lu MHz\n",
+ PICOS2KHZ(p->pixclock) / 1000, PICOS2KHZ(p->pixclock) % 1000);
+
+ if (p != &fb_mode) {
+ int ret;
+
+ debug("Creating new display-timing node from '%s'\n",
+ video_mode);
+ ret = karo_fdt_create_fb_mode(working_fdt, video_mode, p);
+ if (ret)
+ printf("Failed to create new display-timing node from '%s': %d\n",
+ video_mode, ret);
+ }
+
+ gpio_request_array(stk5_lcd_gpios, ARRAY_SIZE(stk5_lcd_gpios));
+ imx_iomux_v3_setup_multiple_pads(stk5_lcd_pads,
+ ARRAY_SIZE(stk5_lcd_pads));
+
+ lcd_bus_width = karo_fdt_get_lcd_bus_width(working_fdt, 24);
+ switch (lcd_bus_width) {
+ case 24:
+ pix_fmt = is_lvds() ? IPU_PIX_FMT_LVDS888 : IPU_PIX_FMT_RGB24;
+ break;
+
+ case 18:
+ pix_fmt = is_lvds() ? IPU_PIX_FMT_LVDS666 : IPU_PIX_FMT_RGB666;
+ break;
+
+ case 16:
+ if (!is_lvds()) {
+ pix_fmt = IPU_PIX_FMT_RGB565;
+ break;
+ }
+ /* fallthru */
+ default:
+ lcd_enabled = 0;
+ printf("Invalid %s bus width: %d\n", is_lvds() ? "LVDS" : "LCD",
+ lcd_bus_width);
+ return;
+ }
+ if (is_lvds()) {
+ int lvds_mapping = karo_fdt_get_lvds_mapping(working_fdt, 0);
+ int lvds_chan_mask = karo_fdt_get_lvds_channels(working_fdt);
+ uint32_t gpr2;
+
+ if (lvds_chan_mask == 0) {
+ printf("No LVDS channel active\n");
+ lcd_enabled = 0;
+ return;
+ }
+
+ gpr2 = (lvds_mapping << 6) | (lvds_mapping << 8);
+ if (lcd_bus_width == 24)
+ gpr2 |= (1 << 5) | (1 << 7);
+ gpr2 |= (lvds_chan_mask & 1) ? 1 << 0 : 0;
+ gpr2 |= (lvds_chan_mask & 2) ? 3 << 2 : 0;
+ debug("writing %08x to GPR2[%08x]\n", gpr2, IOMUXC_BASE_ADDR + 8);
+ writel(gpr2, IOMUXC_BASE_ADDR + 8);
+ }
+ if (karo_load_splashimage(0) == 0) {
+ int ret;
+
+ debug("Initializing LCD controller\n");
+ ret = ipuv3_fb_init(p, 0, pix_fmt, DI_PCLK_PLL3, di_clk_rate, -1);
+ if (ret) {
+ printf("Failed to initialize FB driver: %d\n", ret);
+ lcd_enabled = 0;
+ }
+ } else {
+ debug("Skipping initialization of LCD controller\n");
+ }
+}
+#else
+#define lcd_enabled 0
+#endif /* CONFIG_LCD */
+
+static void stk5_board_init(void)
+{
+ gpio_request_array(stk5_gpios, ARRAY_SIZE(stk5_gpios));
+ imx_iomux_v3_setup_multiple_pads(stk5_pads, ARRAY_SIZE(stk5_pads));
+}
+
+static void stk5v3_board_init(void)
+{
+ stk5_board_init();
+}
+
+static void stk5v5_board_init(void)
+{
+ stk5_board_init();
+
+ gpio_request_one(IMX_GPIO_NR(4, 21), GPIOF_OUTPUT_INIT_HIGH,
+ "Flexcan Transceiver");
+ imx_iomux_v3_setup_pad(MX6_PAD_DISP0_DAT0__GPIO_4_21);
+}
+
+static void tx6qdl_set_cpu_clock(void)
+{
+ unsigned long cpu_clk = getenv_ulong("cpu_clk", 10, 0);
+
+ if (had_ctrlc() || (wrsr & WRSR_TOUT))
+ return;
+
+ if (cpu_clk == 0 || cpu_clk == mxc_get_clock(MXC_ARM_CLK) / 1000000)
+ return;
+
+ if (mxc_set_clock(CONFIG_SYS_MX6_HCLK, cpu_clk, MXC_ARM_CLK) == 0) {
+ cpu_clk = mxc_get_clock(MXC_ARM_CLK);
+ printf("CPU clock set to %lu.%03lu MHz\n",
+ cpu_clk / 1000000, cpu_clk / 1000 % 1000);
+ } else {
+ printf("Error: Failed to set CPU clock to %lu MHz\n", cpu_clk);
+ }
+}
+
+static void tx6_init_mac(void)
+{
+ u8 mac[ETH_ALEN];
+
+ imx_get_mac_from_fuse(-1, mac);
+ if (!is_valid_ether_addr(mac)) {
+ printf("No valid MAC address programmed\n");
+ return;
+ }
+
+ printf("MAC addr from fuse: %pM\n", mac);
+ eth_setenv_enetaddr("ethaddr", mac);
+}
+
+int board_late_init(void)
+{
+ int ret = 0;
+ const char *baseboard;
+
+ tx6qdl_set_cpu_clock();
+ karo_fdt_move_fdt();
+
+ baseboard = getenv("baseboard");
+ if (!baseboard)
+ goto exit;
+
+ printf("Baseboard: %s\n", baseboard);
+
+ if (strncmp(baseboard, "stk5", 4) == 0) {
+ if ((strlen(baseboard) == 4) ||
+ strcmp(baseboard, "stk5-v3") == 0) {
+ stk5v3_board_init();
+ } else if (strcmp(baseboard, "stk5-v5") == 0) {
+ const char *otg_mode = getenv("otg_mode");
+
+ if (otg_mode && strcmp(otg_mode, "host") == 0) {
+ printf("otg_mode='%s' is incompatible with baseboard %s; setting to 'none'\n",
+ otg_mode, baseboard);
+ setenv("otg_mode", "none");
+ }
+ stk5v5_board_init();
+ } else {
+ printf("WARNING: Unsupported STK5 board rev.: %s\n",
+ baseboard + 4);
+ }
+ } else {
+ printf("WARNING: Unsupported baseboard: '%s'\n",
+ baseboard);
+ ret = -EINVAL;
+ }
+
+exit:
+ tx6_init_mac();
+
+ gpio_set_value(TX6_RESET_OUT_GPIO, 1);
+ clear_ctrlc();
+ return ret;
+}
+
+int checkboard(void)
+{
+ u32 cpurev = get_cpu_rev();
+ int cpu_variant = (cpurev >> 12) & 0xff;
+
+ tx6qdl_print_cpuinfo();
+
+ printf("Board: Ka-Ro TX6%c-%d%d2%d\n",
+ cpu_variant == MXC_CPU_MX6Q ? 'Q' : 'U',
+ cpu_variant == MXC_CPU_MX6Q ? 1 : 8,
+ is_lvds(), 1 - PHYS_SDRAM_1_WIDTH / 64);
+
+ return 0;
+}
+
+#ifdef CONFIG_SERIAL_TAG
+void get_board_serial(struct tag_serialnr *serialnr)
+{
+ struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
+ struct fuse_bank0_regs *fuse = (void *)ocotp->bank[0].fuse_regs;
+
+ serialnr->low = readl(&fuse->cfg0);
+ serialnr->high = readl(&fuse->cfg1);
+}
+#endif
+
+#ifdef CONFIG_OF_BOARD_SETUP
+static const char *tx6_touchpanels[] = {
+ "ti,tsc2007",
+ "edt,edt-ft5x06",
+ "eeti,egalax_ts",
+};
+
+void ft_board_setup(void *blob, bd_t *bd)
+{
+ const char *baseboard = getenv("baseboard");
+ int stk5_v5 = baseboard != NULL && (strcmp(baseboard, "stk5-v5") == 0);
+ const char *video_mode = karo_get_vmode(getenv("video_mode"));
+ int ret;
+
+ ret = fdt_increase_size(blob, 4096);
+ if (ret)
+ printf("Failed to increase FDT size: %s\n", fdt_strerror(ret));
+
+ if (stk5_v5)
+ karo_fdt_enable_node(blob, "stk5led", 0);
+
+ fdt_fixup_ethernet(blob);
+
+ karo_fdt_fixup_touchpanel(blob, tx6_touchpanels,
+ ARRAY_SIZE(tx6_touchpanels));
+ karo_fdt_fixup_usb_otg(blob, "usbotg", "fsl,usbphy", "vbus-supply");
+ karo_fdt_fixup_flexcan(blob, stk5_v5);
+
+ karo_fdt_update_fb_mode(blob, video_mode);
+}
+#endif /* CONFIG_OF_BOARD_SETUP */
projects / karo-tx-uboot.git / blobdiff