[PATCH v2 1/2] qcom_defconfig: Disable MMC HS200 mode support

[neil.armstrong at linaro.org]

On 10/04/2025 10:00, Sumit Garg wrote:
> From: Sumit Garg <sumit.garg at oss.qualcomm.com>
> 
> Currently the msm_sdhci doesn't yet support DLL configurations which are
> required to enable bus speeds greater that 100MHz. So disable HS200 mode
> support as of now as it requires bus speeds of 200MHz.
> 
> This should fix eMMC issues reported on RB1/RB2 although it should fix
> issues for all Qcom platforms but it's not seen there as mostly SD cards
> available don't support HS200 mode. The SD cards usually works in high
> speed mode whose performance remains unaffected by this change. It only
> affects RB1/RB2 as eMMC flash on these support HS200 mode but the U-Boot
> driver currently is incapable of supporting that.
> 
> Reviewed-by: Caleb Connolly <caleb.connolly at linaro.org>
> Signed-off-by: Sumit Garg <sumit.garg at oss.qualcomm.com>
> ---
>   configs/qcom_defconfig | 1 -
>   1 file changed, 1 deletion(-)
> 
> diff --git a/configs/qcom_defconfig b/configs/qcom_defconfig
> index a2b54b95f19..537806450dc 100644
> --- a/configs/qcom_defconfig
> +++ b/configs/qcom_defconfig
> @@ -81,7 +81,6 @@ CONFIG_QCOM_HYP_SMMU=y
>   CONFIG_MISC=y
>   CONFIG_NVMEM=y
>   CONFIG_I2C_EEPROM=y
> -CONFIG_MMC_HS200_SUPPORT=y
>   CONFIG_MMC_SDHCI=y
>   CONFIG_MMC_SDHCI_ADMA=y
>   CONFIG_MMC_SDHCI_MSM=y

Reviewed-by: Neil Armstrong <neil.armstrong at linaro.org>