[PATCH 6.12 108/567] mmc: sdhci-of-arasan: Increase CD stable timeout to 2 seconds

Greg Kroah-Hartman
2026-01-06T17:22:02Z

From: Sai Krishna Potthuri <sai.krishna.potthuri@amd.com>

commit a9c4c9085ec8ce3ce01be21b75184789e74f5f19 upstream.

On Xilinx/AMD platforms, the CD stable bit take slightly longer than
one second(about an additional 100ms) to assert after a host
controller reset. Although no functional failure observed with the
existing one second delay but to ensure reliable initialization, increase
the CD stable timeout to 2 seconds.

Fixes: e251709aaddb ("mmc: sdhci-of-arasan: Ensure CD logic stabilization before power-up")
Cc: stable@vger.kernel.org
Signed-off-by: Sai Krishna Potthuri <sai.krishna.potthuri@amd.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/mmc/host/sdhci-of-arasan.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -99,7 +99,7 @@
#define HIWORD_UPDATE(val, mask, shift) \
((val) << (shift) | (mask) << ((shift) + 16))

-#define CD_STABLE_TIMEOUT_US 1000000
+#define CD_STABLE_TIMEOUT_US 2000000
#define CD_STABLE_MAX_SLEEP_US 10

/**