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

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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>
This commit is contained in:
Pali Rohár 2022-05-11 20:27:13 +02:00 committed by Peng Fan
parent a29eb319a3
commit 8f3f8ba945
2 changed files with 6 additions and 0 deletions
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5
drivers/mmc/Kconfig
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@ -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

1
drivers/mmc/fsl_esdhc.c
View File

@ -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;