[PATCH 26/40] mmc: tegra: Enable workaround for tuning transfer mode bug
From: Aapo Vienamo <hidden>
Date: 2018-08-01 16:34:06
Also in:
linux-mmc, linux-tegra, lkml
Subsystem:
multimedia card (mmc), secure digital (sd) and sdio subsystem, secure digital host controller interface (sdhci) driver, the rest · Maintainers:
Ulf Hansson, Adrian Hunter, Linus Torvalds
Set SDHCI_QUIRK2_TUNE_SKIP_XFERMODE_REG_PROG on Tegra210 and Tegra186. This prevents the controller from hanging during tuning. This bug does not seem to be documented but it's handled in a similar way in the downstream kernel. Signed-off-by: Aapo Vienamo <redacted> --- drivers/mmc/host/sdhci-tegra.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index 7e6f928..6daee7e 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c@@ -833,7 +833,8 @@ static const struct sdhci_pltfm_data sdhci_tegra210_pdata = { SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC | SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN, - .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN, + .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN | + SDHCI_QUIRK2_TUNE_SKIP_XFERMODE_REG_PROG, .ops = &tegra210_sdhci_ops, };
@@ -859,7 +860,8 @@ static const struct sdhci_pltfm_data sdhci_tegra186_pdata = { * to 32-bit dma mask. Ideally 40-bit dma mask would work, * But it is not supported as of now. */ - SDHCI_QUIRK2_BROKEN_64_BIT_DMA, + SDHCI_QUIRK2_BROKEN_64_BIT_DMA | + SDHCI_QUIRK2_TUNE_SKIP_XFERMODE_REG_PROG, .ops = &tegra210_sdhci_ops, };
--
2.7.4