| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.13 119/140] mmc: sdhci: add quirk for broken HS200 support | Date | Tue, 4 Feb 2014 13:11:46 -0800 |
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3.13-stable review patch. If anyone has any objections, please let me know.
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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 */
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