[PATCH 3.13 119/140] mmc: sdhci: add quirk for broken HS200 support

Greg Kroah-Hartman
2014-02-04T21:13:37Z

From: David Cohen <david.a.cohen@linux.intel.com>

commit 13868bf20f2f2c305f96e23620b024e167d6f9cb upstream.

This patch defines a quirk for platforms unable to enable HS200 support.

Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Reviewed-by: Chuanxiao Dong <chuanxiao.dong@intel.com>
Acked-by: Dong Aisheng <b29396@freescale.com>
Signed-off-by: Chris Ball <chris@printf.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/mmc/host/sdhci.c | 3 ++-
include/linux/mmc/sdhci.h | 2 ++
2 files changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -3004,7 +3004,8 @@ int sdhci_add_host(struct sdhci_host *ho
/* SD3.0: SDR104 is supported so (for eMMC) the caps2
* field can be promoted to support HS200.
*/
- mmc->caps2 |= MMC_CAP2_HS200;
+ if (!(host->quirks2 & SDHCI_QUIRK2_BROKEN_HS200))
+ mmc->caps2 |= MMC_CAP2_HS200;
} else if (caps[1] & SDHCI_SUPPORT_SDR50)
mmc->caps |= MMC_CAP_UHS_SDR50;

--- a/include/linux/mmc/sdhci.h
+++ b/include/linux/mmc/sdhci.h
@@ -98,6 +98,8 @@ struct sdhci_host {
#define SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON (1<<4)
/* Controller has a non-standard host control register */
#define SDHCI_QUIRK2_BROKEN_HOST_CONTROL (1<<5)
+/* Controller does not support HS200 */
+#define SDHCI_QUIRK2_BROKEN_HS200 (1<<6)

int irq; /* Device IRQ */
void __iomem *ioaddr; /* Mapped address */