evie/android_kernel_oneplus_msm8998
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mmc: sdhci-msm: Fix SD card detection issue

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The change in pull configs might not take into effect immediately
and any value read before it is stabilized will mark incorrect
card status. This causes SD card detection to fail when inserted
for the first time. Fix this by adding enough delay after
configuring the GPIO and before reading its value.

Change-Id: I3a8455ce404988ab5eb3ed04c0f90ab6edf76d86
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Pavan Anamula <pavana@codeaurora.org>
This commit is contained in:
Sahitya Tummala 2015-02-05 14:05:27 +05:30 • committed by Subhash Jadavani
parent 8984d4abf6
commit ee08ef262b
1 changed files with 5 additions and 0 deletions
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5
drivers/mmc/host/sdhci-msm.c
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@ -3331,6 +3331,11 @@ static int sdhci_msm_probe(struct platform_device *pdev)
*/
sdhci_msm_setup_pins(msm_host->pdata, true);
/*
* This delay is needed for stabilizing the card detect GPIO
* line after changing the pull configs.
*/
usleep_range(10000, 10500);
ret = mmc_gpio_request_cd(msm_host->mmc,
msm_host->pdata->status_gpio, 0);
if (ret) {