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mmc: sdhci: add quirk for broken HS200 support 

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>
Cc: stable <stable@vger.kernel.org> # [3.13]
Signed-off-by: Chris Ball <chris@printf.net>
This commit is contained in:
David Cohen 2013-10-29 10:58:26 -07:00 committed by Chris Ball
parent e3ec3a3d11
commit 13868bf20f
2 changed files with 4 additions and 1 deletions
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3
drivers/mmc/host/sdhci.c
View File

@ -3016,7 +3016,8 @@ int sdhci_add_host(struct sdhci_host *host)
/* SD3.0: SDR104 is supported so (for eMMC) the caps2 /* SD3.0: SDR104 is supported so (for eMMC) the caps2
* field can be promoted to support HS200. * 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) } else if (caps[1] & SDHCI_SUPPORT_SDR50)
mmc->caps |= MMC_CAP_UHS_SDR50; mmc->caps |= MMC_CAP_UHS_SDR50;

2
include/linux/mmc/sdhci.h
View File

@ -98,6 +98,8 @@ struct sdhci_host {
#define SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON (1<<4) #define SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON (1<<4)
/* Controller has a non-standard host control register */ /* Controller has a non-standard host control register */
#define SDHCI_QUIRK2_BROKEN_HOST_CONTROL (1<<5) #define SDHCI_QUIRK2_BROKEN_HOST_CONTROL (1<<5)
/* Controller does not support HS200 */
#define SDHCI_QUIRK2_BROKEN_HS200 (1<<6)
int irq; /* Device IRQ */ int irq; /* Device IRQ */
void __iomem *ioaddr; /* Mapped address */ void __iomem *ioaddr; /* Mapped address */