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
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