Commit 6d0b1c01 authored by Judith Mendez's avatar Judith Mendez Committed by Ulf Hansson
Browse files

mmc: sdhci_am654: Workaround for Errata i2312 

Errata i2312 [0] for K3 silicon mentions the maximum obtainable
timeout through MMC host controller is 700ms. And for commands taking
longer than 700ms, hardware timeout should be disabled and software
timeout should be used.

The workaround for Errata i2312 can be achieved by adding
SDHCI_QUIRK2_DISABLE_HW_TIMEOUT quirk in sdhci_am654.

[0] https://www.ti.com/lit/pdf/sprz487



Signed-off-by: default avatarJudith Mendez <jm@ti.com>
Acked-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Fixes: 41fd4cae ("mmc: sdhci_am654: Add Initial Support for AM654 SDHCI driver")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250626231452.3460987-1-jm@ti.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 50c78f39

drivers/mmc/host/sdhci_am654.c

+6 −3
Original line number Diff line number Diff line
@@ -613,7 +613,8 @@ static const struct sdhci_ops sdhci_am654_ops = { 
static const struct sdhci_pltfm_data sdhci_am654_pdata = {

	.ops = &sdhci_am654_ops,

	.quirks = SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12,

	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,

	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |

		   SDHCI_QUIRK2_DISABLE_HW_TIMEOUT,

};



static const struct sdhci_am654_driver_data sdhci_am654_sr1_drvdata = {
@@ -643,7 +644,8 @@ static const struct sdhci_ops sdhci_j721e_8bit_ops = { 
static const struct sdhci_pltfm_data sdhci_j721e_8bit_pdata = {

	.ops = &sdhci_j721e_8bit_ops,

	.quirks = SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12,

	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,

	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |

		   SDHCI_QUIRK2_DISABLE_HW_TIMEOUT,

};



static const struct sdhci_am654_driver_data sdhci_j721e_8bit_drvdata = {
@@ -667,7 +669,8 @@ static const struct sdhci_ops sdhci_j721e_4bit_ops = { 
static const struct sdhci_pltfm_data sdhci_j721e_4bit_pdata = {

	.ops = &sdhci_j721e_4bit_ops,

	.quirks = SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12,

	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,

	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |

		   SDHCI_QUIRK2_DISABLE_HW_TIMEOUT,

};



static const struct sdhci_am654_driver_data sdhci_j721e_4bit_drvdata = {