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| author | Felix Qin <xiaokeqinhealth@126.com> | 2024-04-29 09:19:55 +0200 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2024-05-03 14:28:27 +0200 |
| commit | ef65b1fdd1f808f8b796182e2a117196de66e941 (patch) | |
| tree | f6cd0b594d049da74fd001fdd95f3fe27bec8958 /drivers/mmc | |
| parent | mmc: core: Convert to use __mmc_poll_for_busy() SD_APP_OP_COND too (diff) | |
| download | linux-ef65b1fdd1f808f8b796182e2a117196de66e941.tar.xz linux-ef65b1fdd1f808f8b796182e2a117196de66e941.zip | |
mmc: core: Increase the timeout period of the ACMD41 command
Extensive testing has shown that some specific SD cards require an
increased command timeout to be successfully initialized.
More info:
Platform: Rockchip SoC + DW Multimedia host Controller
SD card: Xvv microSD CMH34A17TMA12 (Made in Korea)
Note: The SD card is custom-made by the customer in collaboration
with the wafer foundry.
Signed-off-by: Felix Qin <xiaokeqinhealth@126.com>
Acked-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>
Link: https://lore.kernel.org/r/20240429071955.163282-1-xiaokeqinhealth@126.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/core/sd_ops.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c index 9a777b0fea27..8b9b34286ef3 100644 --- a/drivers/mmc/core/sd_ops.c +++ b/drivers/mmc/core/sd_ops.c @@ -19,8 +19,13 @@ #include "sd_ops.h" #include "mmc_ops.h" +/* + * Extensive testing has shown that some specific SD cards + * require an increased command timeout to be successfully + * initialized. + */ #define SD_APP_OP_COND_PERIOD_US (10 * 1000) /* 10ms */ -#define SD_APP_OP_COND_TIMEOUT_MS 1000 /* 1s */ +#define SD_APP_OP_COND_TIMEOUT_MS 2000 /* 2s */ struct sd_app_op_cond_busy_data { struct mmc_host *host; |