mmc: sdhci-msm: Use maximum possible data timeout value

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 <[email protected]> Signed-off-by: Sarthak Garg <[email protected]> Acked-by: Adrian Hunter <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Ulf Hansson <[email protected]>
kawasaki · Aug 24, 2021 · ed78a03 · ed78a03
1 parent e30314f
commit ed78a03
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
@@ -2714,6 +2714,9 @@ 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);