[PATCH 2/2] mmc: fsl_esdhc: Add new config option for default fallback mode

[Pali Rohár]

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 at kernel.org>
---
 drivers/mmc/Kconfig     | 5 +++++
 drivers/mmc/fsl_esdhc.c | 1 +
 2 files changed, 6 insertions(+)

diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
index f04cc44e1973..df15dff6248f 100644
--- a/drivers/mmc/Kconfig
+++ b/drivers/mmc/Kconfig
@@ -826,6 +826,11 @@ 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 834f8933b0c6..a4c22942c2be 100644
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -988,6 +988,7 @@ 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;
-- 
2.20.1