diff options
Diffstat (limited to 'board/toradex/colibri-imx6ull/colibri-imx6ull.c')
-rw-r--r-- | board/toradex/colibri-imx6ull/colibri-imx6ull.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/board/toradex/colibri-imx6ull/colibri-imx6ull.c b/board/toradex/colibri-imx6ull/colibri-imx6ull.c index c02db78881..200a1447e0 100644 --- a/board/toradex/colibri-imx6ull/colibri-imx6ull.c +++ b/board/toradex/colibri-imx6ull/colibri-imx6ull.c @@ -42,6 +42,14 @@ DECLARE_GLOBAL_DATA_PTR; #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 iomux_v3_cfg_t const 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); @@ -119,6 +127,16 @@ 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 @@ -147,8 +165,15 @@ int board_late_init(void) * 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) + 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 /* |