[PATCH 1/3] mmc: dw_mmc: dt-binding: Add tuning related things

Doug Anderson dianders at chromium.org
Thu Dec 18 16:36:14 PST 2014


On Thu, Dec 18, 2014 at 3:01 PM, Alexandru M Stan <amstan at chromium.org> wrote:
> Add ciu_drv, ciu_sample clocks and default-sample-phase. This will later be used
> by tuning code.
> We do not touch ciu_drive (and by extension define default-drive-phase). Drive
> phase is mostly used to define minimum hold times, while one could write some
> code to determine what phase meets the minimum hold time (ex 10 degrees) this
> will not work with the current clock phase framework (which floors angles, so
> we'll get 0 deg, and there's no way to know what resolution the floors happen
> at). We assume that the default drive angles set by the hardware are good enough.
> Signed-off-by: Alexandru M Stan <amstan at chromium.org>
> Suggested-by: Heiko Stuebner <heiko at sntech.de>
> Suggested-by: Doug Anderson <dianders at chromium.org>
> ---
>  Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt | 14 ++++++++++----
>  1 file changed, 10 insertions(+), 4 deletions(-)

Reviewed-by: Doug Anderson <dianders at chromium.org>

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