diff options
| author | Seungwon Jeon <tgih.jun@samsung.com> | 2013-08-30 19:13:55 +0400 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2013-09-26 05:34:39 +0400 |
| commit | f1d2736c815629f3b43d8eebf73a81b581438e65 (patch) | |
| tree | e8150b9c27571f4b1b541931f7cf8f3137f7c41d /drivers/mmc/host/dw_mmc.h | |
| parent | 524268990e54dab9bd71a984b70c13ce0eb1c525 (diff) | |
| download | linux-f1d2736c815629f3b43d8eebf73a81b581438e65.tar.xz | |
mmc: dw_mmc: control card read threshold
Card Read Threshold should be ensured that the card clock does not stop
in the middle of a block of data being transferred from the card to the
Host. Specially, clock stop is allowed in fast transfer such as HS200
or SDR104 mode. And so, it should be enabled.
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Tested-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host/dw_mmc.h')
| -rw-r--r-- | drivers/mmc/host/dw_mmc.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h index a0f2f8d35f5d..6bf24ab917e6 100644 --- a/drivers/mmc/host/dw_mmc.h +++ b/drivers/mmc/host/dw_mmc.h @@ -53,6 +53,7 @@ #define SDMMC_IDINTEN 0x090 #define SDMMC_DSCADDR 0x094 #define SDMMC_BUFADDR 0x098 +#define SDMMC_CDTHRCTL 0x100 #define SDMMC_DATA(x) (x) /* @@ -146,6 +147,8 @@ #define SDMMC_IDMAC_SWRESET BIT(0) /* Version ID register define */ #define SDMMC_GET_VERID(x) ((x) & 0xFFFF) +/* Card read threshold */ +#define SDMMC_SET_RD_THLD(v, x) (((v) & 0x1FFF) << 16 | (x)) /* Register access macros */ #define mci_readl(dev, reg) \ |