// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2018-2019 Toradex AG */ #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 "../common/tdx-common.h" #include "../common/tdx-cfg-block.h" DECLARE_GLOBAL_DATA_PTR; #define LCD_PAD_CTRL (PAD_CTL_HYS | PAD_CTL_PUS_100K_UP | \ PAD_CTL_DSE_48ohm) #define MX6_PAD_SNVS_PMIC_STBY_REQ_ADDR 0x2290040 #define NAND_PAD_CTRL (PAD_CTL_DSE_48ohm | PAD_CTL_SRE_SLOW | PAD_CTL_HYS) #define NAND_PAD_READY0_CTRL (PAD_CTL_DSE_48ohm | PAD_CTL_PUS_22K_UP) #define FLASH_DETECTION_CTRL (PAD_CTL_HYS | PAD_CTL_PUE) #define FLASH_DET_GPIO IMX_GPIO_NR(4, 1) static const iomux_v3_cfg_t flash_detection_pads[] = { MX6_PAD_NAND_WE_B__GPIO4_IO01 | MUX_PAD_CTRL(FLASH_DETECTION_CTRL), }; static bool is_emmc; int dram_init(void) { gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE); return 0; } #ifdef CONFIG_NAND_MXS static void setup_gpmi_nand(void) { setup_gpmi_io_clk((MXC_CCM_CS2CDR_ENFC_CLK_PODF(0) | MXC_CCM_CS2CDR_ENFC_CLK_PRED(3) | MXC_CCM_CS2CDR_ENFC_CLK_SEL(3))); } #endif /* CONFIG_NAND_MXS */ #ifdef CONFIG_DM_VIDEO static const iomux_v3_cfg_t backlight_pads[] = { /* Backlight On */ MX6_PAD_JTAG_TMS__GPIO1_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL), /* Backlight PWM (multiplexed pin) */ MX6_PAD_NAND_WP_B__GPIO4_IO11 | MUX_PAD_CTRL(NO_PAD_CTRL), }; #define GPIO_BL_ON IMX_GPIO_NR(1, 11) #define GPIO_PWM_A IMX_GPIO_NR(4, 11) static int setup_lcd(void) { imx_iomux_v3_setup_multiple_pads(backlight_pads, ARRAY_SIZE(backlight_pads)); /* Set BL_ON */ gpio_request(GPIO_BL_ON, "BL_ON"); gpio_direction_output(GPIO_BL_ON, 1); /* Set PWM to full brightness (assuming inversed polarity) */ gpio_request(GPIO_PWM_A, "PWM"); gpio_direction_output(GPIO_PWM_A, 0); return 0; } #endif #ifdef CONFIG_FEC_MXC static int setup_fec(void) { struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR; int ret; /* provide the PHY clock from the i.MX 6 */ ret = enable_fec_anatop_clock(1, ENET_50MHZ); if (ret) return ret; /* Use 50M anatop REF_CLK and output it on ENET2_TX_CLK */ clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC2_CLOCK_MUX2_SEL_MASK, IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK); /* give new Ethernet PHY power save mode circuitry time to settle */ mdelay(300); return 0; } int board_phy_config(struct phy_device *phydev) { if (phydev->drv->config) phydev->drv->config(phydev); return 0; } #endif /* CONFIG_FEC_MXC */ int board_init(void) { /* address of boot parameters */ gd->bd->bi_boot_params = PHYS_SDRAM + 0x100; /* * Enable GPIO on NAND_WE_B/eMMC_RST with 100k pull-down. eMMC_RST * is pulled high with 4.7k for eMMC devices. This allows to reliably * detect eMMC/NAND flash */ imx_iomux_v3_setup_multiple_pads(flash_detection_pads, ARRAY_SIZE(flash_detection_pads)); gpio_request(FLASH_DET_GPIO, "flash-detection-gpio"); is_emmc = gpio_get_value(FLASH_DET_GPIO); gpio_free(FLASH_DET_GPIO); #ifdef CONFIG_FEC_MXC setup_fec(); #endif #ifdef CONFIG_NAND_MXS setup_gpmi_nand(); #endif return 0; } #ifdef CONFIG_CMD_BMODE /* TODO */ static const struct boot_mode board_boot_modes[] = { /* 4 bit bus width */ {"nand", MAKE_CFGVAL(0x40, 0x34, 0x00, 0x00)}, {"sd1", MAKE_CFGVAL(0x10, 0x10, 0x00, 0x00)}, {NULL, 0}, }; #endif int board_late_init(void) { #ifdef CONFIG_TDX_CFG_BLOCK /* * If we have a valid config block and it says we are a module with * Wi-Fi/Bluetooth make sure we use the -wifi device tree. */ if (tdx_hw_tag.prodid == COLIBRI_IMX6ULL_WIFI_BT_IT || tdx_hw_tag.prodid == COLIBRI_IMX6ULL_WIFI_BT) { env_set("variant", "-wifi"); } else { if (is_emmc) env_set("variant", "-emmc"); } #else if (is_emmc) env_set("variant", "-emmc"); #endif /* * Disable output driver of PAD CCM_PMIC_STBY_REQ. This prevents the * SOC to request for a lower voltage during sleep. This is necessary * because the voltage is changing too slow for the SOC to wake up * properly. */ __raw_writel(0x8080, MX6_PAD_SNVS_PMIC_STBY_REQ_ADDR); #ifdef CONFIG_CMD_BMODE add_board_boot_modes(board_boot_modes); #endif #ifdef CONFIG_CMD_USB_SDP if (is_boot_from_usb()) { printf("Serial Downloader recovery mode, using sdp command\n"); env_set("bootdelay", "0"); env_set("bootcmd", "sdp 0"); } #endif /* CONFIG_CMD_USB_SDP */ #if defined(CONFIG_DM_VIDEO) setup_lcd(); #endif return 0; } int checkboard(void) { printf("Model: Toradex Colibri iMX6ULL\n"); return 0; } #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) int ft_board_setup(void *blob, struct bd_info *bd) { #if defined(CONFIG_FDT_FIXUP_PARTITIONS) static struct node_info nodes[] = { { "fsl,imx6ull-gpmi-nand", MTD_DEV_TYPE_NAND, }, { "fsl,imx6q-gpmi-nand", MTD_DEV_TYPE_NAND, }, }; /* Update partition nodes using info from mtdparts env var */ puts(" Updating MTD partitions...\n"); fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes)); #endif return ft_common_board_setup(blob, bd); } #endif static struct mxc_serial_plat mxc_serial_plat = { .reg = (struct mxc_uart *)UART1_BASE, .use_dte = 1, }; U_BOOT_DRVINFO(mxc_serial) = { .name = "serial_mxc", .plat = &mxc_serial_plat, };