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-rw-r--r--drivers/mmc/Kconfig11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
index 05e0b10..560391f 100644
--- a/drivers/mmc/Kconfig
+++ b/drivers/mmc/Kconfig
@@ -367,6 +367,17 @@ config MMC_SUNXI
endif
+config TEGRA124_MMC_DISABLE_EXT_LOOPBACK
+ bool "Disable external clock loopback"
+ depends on MMC_SDHCI_TEGRA && TEGRA124
+ help
+ Disable the external clock loopback and use the internal one on SDMMC3
+ as per the SDMMC_VENDOR_MISC_CNTRL_0 register's SDMMC_SPARE1 bits
+ being set to 0xfffd according to the TRM.
+
+ TODO(marcel.ziswiler@toradex.com): Move to device tree controlled
+ approach once proper kernel integration made it mainline.
+
endmenu
config SYS_FSL_ERRATUM_ESDHC111