On Mon, Jul 01, 2019 at 10:59:47AM +0530, Manish Narani wrote:
> Add optional propeties for Arasan SDHCI which are used to set clk delays
> for different speed modes in the controller.
>
> Signed-off-by: Manish Narani <[email protected]>
> ---
> Documentation/devicetree/bindings/mmc/arasan,sdhci.txt | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
> b/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
> index 7c79496..7425d52 100644
> --- a/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
> +++ b/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
> @@ -49,6 +49,21 @@ Optional Properties:
> properly. Test mode can be used to force the controller to function.
> - xlnx,int-clock-stable-broken: when present, the controller always reports
> that the internal clock is stable even when it is not.
> + - clk-phase-legacy: Input/Output Clock Delay pair in degrees for Legacy
> Mode.
> + - clk-phase-mmc-hs: Input/Output Clock Delay pair degrees for MMC HS.
> + - clk-phase-sd-hs: Input/Output Clock Delay pair in degrees for SD HS.
> + - clk-phase-uhs-sdr12: Input/Output Clock Delay pair in degrees for SDR12.
> + - clk-phase-uhs-sdr25: Input/Output Clock Delay pair in degrees for SDR25.
> + - clk-phase-uhs-sdr50: Input/Output Clock Delay pair in degrees for SDR50.
> + - clk-phase-uhs-sdr104: Input/Output Clock Delay pair in degrees for
> SDR104.
> + - clk-phase-uhs-ddr50: Input/Output Clock Delay pair in degrees for SD
> DDR50.
> + - clk-phase-mmc-ddr52: Input/Output Clock Delay pair in degrees for MMC
> DDR52.
> + - clk-phase-mmc-hs200: Input/Output Clock Delay pair in degrees for MMC
> HS200.
> + - clk-phase-mmc-hs400: Input/Output Clock Delay pair in degrees for MMC
> HS400.
Either these need vendor prefixes or be added as common properties if
that makes sense.
Rob
> +
> + Above mentioned are the clock (phase) delays which are to be configured in
> the
> + controller while switching to particular speed mode. If not specified,
> driver
> + will configure the default value defined for particular mode in it.
>
> Example:
> sdhci@e0100000 {
> --
> 2.1.1
>
