[PATCH RESEND v7 2/2] mmc: host: sdhci: Add support to disable SDR104/SDR50/DDR50 based on capability register 0.
ulf.hansson at linaro.org
Tue May 26 22:36:49 AEST 2015
On 21 May 2015 at 10:43, Suman Tripathi <stripathi at 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 at 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 & SDHCI_CAN_VDD_180))
> caps &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |
I have no problem with this patch, except that it would be nice to get
a few "tested by" to make sure it doesn't break UHS support for some
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