Currently, imx6q udoo board fails to boot like this:
U-Boot SPL 2022.01-rc3-00061-g95ca715adad3 (Dec 18 2021 - 18:04:40 -0300) Trying to boot from MMC1
The reason is that the eSDHC controller is not initialized in SPL.
Initialize the eSDHC controller in SPL via C code as DM is not used in SPL.
Signed-off-by: Fabio Estevam festevam@gmail.com --- board/udoo/udoo_spl.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+)
diff --git a/board/udoo/udoo_spl.c b/board/udoo/udoo_spl.c index d9afbbb74198..754bd9dfe21e 100644 --- a/board/udoo/udoo_spl.c +++ b/board/udoo/udoo_spl.c @@ -254,4 +254,39 @@ void board_init_f(ulong dummy) /* DDR initialization */ spl_dram_init(); } + +#define USDHC3_CD_GPIO IMX_GPIO_NR(7, 0) + +#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 struct fsl_esdhc_cfg usdhc_cfg[2] = { + {USDHC3_BASE_ADDR}, +}; + +static const iomux_v3_cfg_t usdhc3_pads[] = { + IOMUX_PADS(PAD_SD3_CLK__SD3_CLK | MUX_PAD_CTRL(USDHC_PAD_CTRL)), + IOMUX_PADS(PAD_SD3_CMD__SD3_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL)), + IOMUX_PADS(PAD_SD3_DAT0__SD3_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), + IOMUX_PADS(PAD_SD3_DAT1__SD3_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), + IOMUX_PADS(PAD_SD3_DAT2__SD3_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), + IOMUX_PADS(PAD_SD3_DAT3__SD3_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL)), + IOMUX_PADS(PAD_SD3_DAT5__GPIO7_IO00 | MUX_PAD_CTRL(NO_PAD_CTRL)), +}; + +int board_mmc_getcd(struct mmc *mmc) +{ + return !gpio_get_value(USDHC3_CD_GPIO); +} + +int board_mmc_init(struct bd_info *bis) +{ + SETUP_IOMUX_PADS(usdhc3_pads); + usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC3_CLK); + usdhc_cfg[0].max_bus_width = 4; + gpio_direction_input(USDHC3_CD_GPIO); + + return fsl_esdhc_initialize(bis, &usdhc_cfg[0]); +} #endif