mmc: sdhci: add quirk for ACMD23 broken

Add quirk to handle broken auto-CMD23.
Some controllers do not respond after the first auto-CMD23 is issued.

This allows CMD23 to still work (mandatory for the faster UHS-I mode)
rather than disabling CMD23 entirely via SDHCI_QUIRK2_HOST_NO_CMD23.

Signed-off by: Corneliu Doban <cdoban@broadcom.com>
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 0ad412a4876f..5cf35e5ae267 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -3164,7 +3164,8 @@ int sdhci_add_host(struct sdhci_host *host)
         /* Auto-CMD23 stuff only works in ADMA or PIO. */
         if ((host->version >= SDHCI_SPEC_300) &&
             ((host->flags & SDHCI_USE_ADMA) ||
-             !(host->flags & SDHCI_USE_SDMA))) {
+             !(host->flags & SDHCI_USE_SDMA)) &&
+             !(host->quirks2 & SDHCI_QUIRK2_ACMD23_BROKEN)) {
                 host->flags |= SDHCI_AUTO_CMD23;
                 DBG("%s: Auto-CMD23 available\n", mmc_hostname(mmc));
         } else {