diff options
| author | Pavan Kunapuli <pkunapuli@nvidia.com> | 2013-07-30 16:21:16 +0530 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2013-09-14 13:38:02 -0700 |
| commit | 7d11f0b33c2f5cebf68450b269561cb6265f5132 (patch) | |
| tree | 46eefc7a0d68b7c334558bea44e69c6d3200f49d /include/linux/mmc | |
| parent | 44405d5d1d702264d62f5986bfabe050d155a608 (diff) | |
mmc: sdhci: Enable host clock before reg access
Some SDMMC controllers require host clock to be enabled before accessing
the controller registers. Define SDHCI_QUIRK2_REG_ACCESS_REQ_HOST_CLK to
handle this behavior.
Ensure clock is enabled before register accesses in suspend/resume path.
Enabled SDHCI_QUIRK2_REG_ACCESS_REQ_HOST_CLK for Tegra SDMMC controllers.
Bug 1328858
Change-Id: I732d0597a715c96bc546beb4bba1beb86e51c302
Signed-off-by: Pavan Kunapuli <pkunapuli@nvidia.com>
Reviewed-on: http://git-master/r/255600
Reviewed-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Diffstat (limited to 'include/linux/mmc')
| -rw-r--r-- | include/linux/mmc/sdhci.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index e5a7a414f8f0..3f1b5e19fa1d 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -110,6 +110,8 @@ struct sdhci_host { /* The system physically doesn't support 1.8v, even if the host does */ #define SDHCI_QUIRK2_NO_1_8_V (1<<2) #define SDHCI_QUIRK2_PRESET_VALUE_BROKEN (1<<3) +/* Controller clock should be ON for register access */ +#define SDHCI_QUIRK2_REG_ACCESS_REQ_HOST_CLK (1<<4) int irq; /* Device IRQ */ void __iomem *ioaddr; /* Mapped address */ |