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    SubjectRe: [PATCH V3 2/2] mmc: sdhci-msm: Use maximum possible data timeout value
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    On 6/08/21 9:55 am, Sarthak Garg wrote:
    > From: Sahitya Tummala <stummala@codeaurora.org>
    >
    > The Qcom SD controller defines the usage of 0xF in data
    > timeout counter register (0x2E) which is actually a reserved
    > bit as per specification. This would result in maximum of 21.26 secs
    > timeout value.
    >
    > Some SDcard taking more time than 2.67secs (timeout value corresponding
    > to 0xE) and with that observed data timeout errors.
    > So increasing the timeout value to max possible timeout.
    >
    > Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
    > Signed-off-by: Sarthak Garg <sartgarg@codeaurora.org>

    Acked-by: Adrian Hunter <adrian.hunter@intel.com>

    > ---
    > drivers/mmc/host/sdhci-msm.c | 3 +++
    > 1 file changed, 3 insertions(+)
    >
    > diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
    > index e44b7a6..19e4673 100644
    > --- a/drivers/mmc/host/sdhci-msm.c
    > +++ b/drivers/mmc/host/sdhci-msm.c
    > @@ -2696,6 +2696,9 @@ static int sdhci_msm_probe(struct platform_device *pdev)
    >
    > msm_host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_NEED_RSP_BUSY;
    >
    > + /* Set the timeout value to max possible */
    > + host->max_timeout_count = 0xF;
    > +
    > pm_runtime_get_noresume(&pdev->dev);
    > pm_runtime_set_active(&pdev->dev);
    > pm_runtime_enable(&pdev->dev);
    >

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