On Wed, Jul 29, 2015 at 05:03:52PM +0800, Haibo Chen wrote: > The imx7d usdhc is derived from imx6sx, the difference is that > imx7d support HS400. > > So introduce a new compatible string for imx7d and add HS400 > support for imx7d usdhc. > > Signed-off-by: Haibo Chen <haibo.chen@xxxxxxxxxxxxx> > --- > drivers/mmc/host/sdhci-esdhc-imx.c | 66 ++++++++++++++++++++++++++++++++++++++ > 1 file changed, 66 insertions(+) > > diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c > index c6b9f64..b441eed 100644 > --- a/drivers/mmc/host/sdhci-esdhc-imx.c > +++ b/drivers/mmc/host/sdhci-esdhc-imx.c > @@ -44,6 +44,7 @@ > #define ESDHC_MIX_CTRL_EXE_TUNE (1 << 22) > #define ESDHC_MIX_CTRL_SMPCLK_SEL (1 << 23) > #define ESDHC_MIX_CTRL_FBCLK_SEL (1 << 25) > +#define ESDHC_MIX_CTRL_HS400_EN (1 << 26) > /* Bits 3 and 6 are not SDHCI standard definitions */ > #define ESDHC_MIX_CTRL_SDHCI_MASK 0xb7 > /* Tuning bits */ > @@ -60,6 +61,16 @@ > #define ESDHC_TUNE_CTRL_MIN 0 > #define ESDHC_TUNE_CTRL_MAX ((1 << 7) - 1) > > +/* strobe dll register */ > +#define ESDHC_STROBE_DLL_CTRL 0x70 > +#define ESDHC_STROBE_DLL_CTRL_ENABLE (1 << 0) > +#define ESDHC_STROBE_DLL_CTRL_RESET (1 << 1) > +#define ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_SHIFT 3 > + > +#define ESDHC_STROBE_DLL_STATUS 0x74 > +#define ESDHC_STROBE_DLL_STS_REF_LOCK (1 << 1) > +#define ESDHC_STROBE_DLL_STS_SLV_LOCK 0x1 > + > #define ESDHC_TUNING_CTRL 0xcc > #define ESDHC_STD_TUNING_EN (1 << 24) > /* NOTE: the minimum valid tuning start tap for mx6sl is 1 */ > @@ -120,6 +131,8 @@ > #define ESDHC_FLAG_ERR004536 BIT(7) > /* The IP supports HS200 mode */ > #define ESDHC_FLAG_HS200 BIT(8) > +/* The IP supports HS400 mode */ > +#define ESDHC_FLAG_SUP_HS400 BIT(9) > > struct esdhc_soc_data { > u32 flags; > @@ -156,6 +169,12 @@ static struct esdhc_soc_data usdhc_imx6sx_data = { > | ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200, > }; > > +static struct esdhc_soc_data usdhc_imx7d_data = { > + .flags = ESDHC_FLAG_USDHC | ESDHC_FLAG_STD_TUNING > + | ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200 > + | ESDHC_FLAG_SUP_HS400, Better to use ESDHC_FLAG_HS400 to keep align with exist ESDHC_FLAG_HS200. Regards Dong Aisheng -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html