Re: [PATCH RESEND v7 2/2] mmc: host: sdhci: Add support to disable SDR104/SDR50/DDR50 based on capability register 0.

Suman Tripathi
2015-05-26T11:07:22Z

On Thu, May 21, 2015 at 2:13 PM, Suman Tripathi <stripathi@apm.com> wrote:
> The sdhci framework disables SDR104/SDR50/DDR50 based on only quirk.
> This patch adds the support to disable SDR104/SDR50/DDR50 based on
> reading the capability register 0.
>
> Signed-off-by: Suman Tripathi <stripathi@apm.com>
> ---
> ---
> drivers/mmc/host/sdhci.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
> index 58c1770..a3d9b8a 100644
> --- a/drivers/mmc/host/sdhci.c
> +++ b/drivers/mmc/host/sdhci.c
> @@ -3118,7 +3118,8 @@ int sdhci_add_host(struct sdhci_host *host)
> }
> }
>
> - if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V)
> + if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V ||
> + !(caps[0] & SDHCI_CAN_VDD_180))
> caps[1] &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |
> SDHCI_SUPPORT_DDR50);
>
> --
> 1.8.2.1
>

Any comments on this patch ?

--
Thanks,
with regards,
Suman Tripathi
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