mmc: host: Issue CMD and DAT resets together

Rapid hot-plug/unlug of SD cards can force the SDHCI FSM to go in bad state. Resetting CMD FSM before DATA FSM results in system crash Add support to issue CMD and DATA resets together. Bug 3688344 Bug 3573141 Change-Id: I65fd9d97725e3be539d5b98cc7b3e91b3c63046d Signed-off-by: Aniruddha TVS Rao <[email protected]> Reviewed-on: https://git-master.nvidia.com/r/c/linux-4.9/+/2754539 Reviewed-by: Bibek Basu <[email protected]> GVS: Gerrit_Virtual_Submit <[email protected]>
nedko · Sep 19, 2022 · 49f3082 · 49f3082
1 parent b577987
commit 49f3082
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
@@ -2003,6 +2003,7 @@ static const struct sdhci_pltfm_data sdhci_tegra186_pdata = {
 		SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
 	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
 		SDHCI_QUIRK2_USE_64BIT_ADDR |
+		SDHCI_QUIRK2_ISSUE_CMD_DAT_RESET_TOGETHER |
 		SDHCI_QUIRK2_HOST_OFF_CARD_ON |
 		SDHCI_QUIRK2_SEL_SDR104_UHS_MODE_IN_SDR50,
 	.ops  = &tegra_sdhci_ops,
@@ -2029,6 +2030,7 @@ static const struct sdhci_pltfm_data sdhci_tegra194_pdata = {
 	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
 		SDHCI_QUIRK2_USE_64BIT_ADDR |
 		SDHCI_QUIRK2_HOST_OFF_CARD_ON |
+		SDHCI_QUIRK2_ISSUE_CMD_DAT_RESET_TOGETHER |
 		SDHCI_QUIRK2_NON_STD_TUN_CARD_CLOCK,
 	.ops  = &tegra_sdhci_ops,
 };