mmc: fsl_esdhc: Add new config option for default fallback mode

Currently default fallback SDHC mode is 1-bit. Add new config option
CONFIG_SYS_FSL_ESDHC_DEFAULT_BUS_WIDTH to allow specifying default fallback
mode. This is useful e.g. for SPL builds which loads other parts from SD
card during boot process.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>

diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
index c8f9709..5a87db6 100644 (file)
--- a/drivers/mmc/Kconfig
+++ b/drivers/mmc/Kconfig
@@ -839,6 +839,11 @@ config FSL_ESDHC_VS33_NOT_SUPPORT
          For eSDHC, power supply is through peripheral circuit. 3.3V support is
          common. Select this if 3.3V power supply not supported.
 
+config SYS_FSL_ESDHC_DEFAULT_BUS_WIDTH
+       int
+       depends on FSL_ESDHC
+       default 1
+
 config FSL_ESDHC_IMX
        bool "Freescale/NXP i.MX eSDHC controller support"
        help

diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index 6c6d03d..4e7bfdf 100644 (file)
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -971,6 +971,7 @@ int fsl_esdhc_mmc_init(struct bd_info *bis)
 
        cfg = calloc(sizeof(struct fsl_esdhc_cfg), 1);
        cfg->esdhc_base = CONFIG_SYS_FSL_ESDHC_ADDR;
+       cfg->max_bus_width = CONFIG_SYS_FSL_ESDHC_DEFAULT_BUS_WIDTH;
        /* Prefer peripheral clock which provides higher frequency. */
        if (gd->arch.sdhc_per_clk)
                cfg->sdhc_clk = gd->arch.sdhc_per_clk;