[PATCH V5 1/2] mmc: dw_mmc: exynos: Support eMMC's HS400 mode

[Rob Herring]

On Wed, Jan 28, 2015 at 8:41 PM, Alim Akhtar <alim.akhtar at samsung.com> wrote:
> From: Seungwon Jeon <tgih.jun at samsung.com>
>
> Implements HS400 mode support for exynos host driver.
> This also include some updates as new mode is added.
>
> Signed-off-by: Seungwon Jeon <tgih.jun at samsung.com>
> Signed-off-by: Alim Akhtar <alim.akhtar at samsung.com>
> [Alim: addressed review comments]
> ---
>  .../devicetree/bindings/mmc/exynos-dw-mshc.txt     |    7 +
>  drivers/mmc/host/dw_mmc-exynos.c                   |  185 ++++++++++++++++----
>  drivers/mmc/host/dw_mmc-exynos.h                   |   19 +-
>  drivers/mmc/host/dw_mmc.c                          |   16 +-
>  drivers/mmc/host/dw_mmc.h                          |    2 +
>  5 files changed, 195 insertions(+), 34 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt
> index ee4fc05..aad9844 100644
> --- a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt
> +++ b/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt
> @@ -36,6 +36,8 @@ Required Properties:
>    in transmit mode and CIU clock phase shift value in receive mode for double
>    data rate mode operation. Refer notes below for the order of the cells and the
>    valid values.
> +* samsung,dw-mshc-hs400-timing: Specifies the value of CIU TX and RX clock phase
> +  shift value for hs400 mode operation.

What are the units?

Rob