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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2020-03-10 15:50:11 +0100 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2020-03-11 16:12:02 +0100 |
| commit | d2f8bfa4bff5028bc40ed56b4497c32e05b0178f (patch) | |
| tree | 20d093ccab587495db6b73e1de7882956a5dcba2 /drivers/mmc | |
| parent | 055e04830d4544c57f2a5192a26c9e25915c29c0 (diff) | |
| download | linux-d2f8bfa4bff5028bc40ed56b4497c32e05b0178f.tar.gz linux-d2f8bfa4bff5028bc40ed56b4497c32e05b0178f.tar.bz2 linux-d2f8bfa4bff5028bc40ed56b4497c32e05b0178f.zip | |
mmc: sdhci-tegra: Fix busy detection by enabling MMC_CAP_NEED_RSP_BUSY
It has turned out that the sdhci-tegra controller requires the R1B response,
for commands that has this response associated with them. So, converting
from an R1B to an R1 response for a CMD6 for example, leads to problems
with the HW busy detection support.
Fix this by informing the mmc core about the requirement, via setting the
host cap, MMC_CAP_NEED_RSP_BUSY.
Reported-by: Bitan Biswas <bbiswas@nvidia.com>
Reported-by: Peter Geis <pgwipeout@gmail.com>
Suggested-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Cc: <stable@vger.kernel.org>
Tested-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Tested-By: Peter Geis <pgwipeout@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci-tegra.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index 403ac44a7378..a25c3a4d3f6c 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -1552,6 +1552,9 @@ static int sdhci_tegra_probe(struct platform_device *pdev) if (tegra_host->soc_data->nvquirks & NVQUIRK_ENABLE_DDR50) host->mmc->caps |= MMC_CAP_1_8V_DDR; + /* R1B responses is required to properly manage HW busy detection. */ + host->mmc->caps |= MMC_CAP_NEED_RSP_BUSY; + tegra_sdhci_parse_dt(host); tegra_host->power_gpio = devm_gpiod_get_optional(&pdev->dev, "power", |