On Thu, 28 May 2020 at 17:14, Veerabhadrarao Badiganti
<vbadi...@codeaurora.org> wrote:
>
> Clear tuning_done flag while executing tuning to ensure vendor
> specific HS400 settings are applied properly when the controller
> is re-initialized in HS400 mode.
>
> Without this, re-initialization of the qcom SDHC in HS400 mode fails
> while resuming the driver from runtime-suspend or system-suspend.
>
> Fixes: ff06ce4 ("mmc: sdhci-msm: Add HS400 platform support")
> Cc: sta...@vger.kernel.org
> Signed-off-by: Veerabhadrarao Badiganti <vbadi...@codeaurora.org>Applied for next, thanks! Kind regards Uffe > --- > drivers/mmc/host/sdhci-msm.c | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c > index 95cd973..b277dd7 100644 > --- a/drivers/mmc/host/sdhci-msm.c > +++ b/drivers/mmc/host/sdhci-msm.c > @@ -1174,6 +1174,12 @@ static int sdhci_msm_execute_tuning(struct mmc_host > *mmc, u32 opcode) > msm_host->use_cdr = true; > > /* > + * Clear tuning_done flag before tuning to ensure proper > + * HS400 settings. > + */ > + msm_host->tuning_done = 0; > + > + /* > * For HS400 tuning in HS200 timing requires: > * - select MCLK/2 in VENDOR_SPEC > * - program MCLK to 400MHz (or nearest supported) in GCC > -- > Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, > Inc., is a member of Code Aurora Forum, a Linux Foundation Collaborative > Project >
