mmc: sdhci-of-at91: add quirk for broken HS200

commit 7871aa60ae0086fe4626abdf5ed13eeddf306c61 upstream.

HS200 is not implemented in the driver, but the controller claims it
through caps. Remove it via a quirk, to make sure the mmc core do not try
to enable HS200, as it causes the eMMC initialization to fail.

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Fixes: bb5f8ea4d514 ("mmc: sdhci-of-at91: introduce driver for the Atmel SDMMC")
Cc: stable@vger.kernel.org # v4.4+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/mmc/host/sdhci-of-at91.c b/drivers/mmc/host/sdhci-of-at91.c
index 83b84ff..2ff6140 100644 (file)
--- a/drivers/mmc/host/sdhci-of-at91.c
+++ b/drivers/mmc/host/sdhci-of-at91.c
@@ -317,6 +317,9 @@ static int sdhci_at91_probe(struct platform_device *pdev)
        pm_runtime_set_autosuspend_delay(&pdev->dev, 50);
        pm_runtime_use_autosuspend(&pdev->dev);
 
+       /* HS200 is broken at this moment */
+       host->quirks2 = SDHCI_QUIRK2_BROKEN_HS200;
+
        ret = sdhci_add_host(host);
        if (ret)
                goto pm_runtime_disable;