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")
Signed-off-by: Sai Krishna Potthuri <sai.krishna.potthuri@amd.com>
---
 drivers/mmc/host/sdhci-of-arasan.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index b97d042897ad..ab7f0ffe7b4f 100644
--- 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
 
 /**
-- 
2.25.1

On 12/12/2025 08:35, Sai Krishna Potthuri wrote:
> 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")
> Signed-off-by: Sai Krishna Potthuri <sai.krishna.potthuri@amd.com>

Acked-by: Adrian Hunter <adrian.hunter@intel.com>

> ---
>  drivers/mmc/host/sdhci-of-arasan.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
> index b97d042897ad..ab7f0ffe7b4f 100644
> --- 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
>  
>  /**