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SubjectRe: [PATCH V1] mmc: sdhci-msm: Clear tuning done flag while hs400 tuning
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On 5/29/2020 4:05 PM, Ulf Hansson wrote:
> On Thu, 28 May 2020 at 17:14, Veerabhadrarao Badiganti
> <vbadigan@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: stable@vger.kernel.org
>> Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
> Applied for next, thanks!
>
> Kind regards
> Uffe
Thanks Ulf.
I see a mail on this patch, that SHA in the commit text should be 12 digit.
Let me know if i have to re-post this patch by correcting it.
>> ---
>> 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
>>

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