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| author | Kishon Vijay Abraham I <kishon@ti.com> | 2017-09-21 16:30:10 +0200 |
|---|---|---|
| committer | Jaehoon Chung <jh80.chung@samsung.com> | 2018-01-12 18:11:04 +0900 |
| commit | 83dc42271f79202b746bc9614817b41a6911c88f (patch) | |
| tree | 493393ae4d5d9b0cd3997d19f647f7a377a4ca12 /drivers/mmc/Kconfig | |
| parent | 01298da31d92ecc46cf9130d8cff68bc51698197 (diff) | |
| download | u-boot-83dc42271f79202b746bc9614817b41a6911c88f.tar.gz | |
mmc: Retry some MMC cmds on failure
With certain SD cards like Kingston 8GB/16GB UHS card, it is seen that
MMC_CMD_ALL_SEND_CID cmd fails on first attempt, but succeeds
subsequently. Therefore, retry MMC_CMD_ALL_SEND_CID cmd a few time
as done in Linux kernel.
Similarly, it is seen that MMC_CMD_SET_BLOCKLEN may fail on first
attempt, therefore retry this cmd a few times as done in kernel.
To make it clear that those are optionnal workarounds, a new Kconfig
option 'MMC_QUIRKS' is added (enabled by default).
Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Diffstat (limited to 'drivers/mmc/Kconfig')
| -rw-r--r-- | drivers/mmc/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig index a8a689f4f5..006c9016a6 100644 --- a/drivers/mmc/Kconfig +++ b/drivers/mmc/Kconfig @@ -42,6 +42,15 @@ config ARM_PL180_MMCI If you have an ARM(R) platform with a Multimedia Card slot, say Y or M here. +config MMC_QUIRKS + bool "Enable quirks" + default y + help + Some cards and hosts may sometimes behave unexpectedly (quirks). + This option enable workarounds to handle those quirks. Some of them + are enabled by default, other may require additionnal flags or are + enabled by the host driver. + config MMC_VERBOSE bool "Output more information about the MMC" default y |