linux-kernel - Re: [PATCH v5 4/8] dt-bindings: mmc: Add optional generic properties for mmc

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Date:   Mon, 4 Nov 2019 17:14:27 -0600
From:   Rob Herring <robh@...nel.org>
To:     Manish Narani <manish.narani@...inx.com>
Cc:     ulf.hansson@...aro.org, mark.rutland@....com,
        adrian.hunter@...el.com, michal.simek@...inx.com,
        jolly.shah@...inx.com, nava.manne@...inx.com,
        rajan.vaja@...inx.com, linux-mmc@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, git@...inx.com
Subject: Re: [PATCH v5 4/8] dt-bindings: mmc: Add optional generic properties
 for mmc

On Fri, Nov 01, 2019 at 11:35:49AM +0530, Manish Narani wrote:
> Add optional properties for mmc hosts which are used to set clk delays
> for different speed modes in the controller.
> 
> Signed-off-by: Manish Narani <manish.narani@...inx.com>
> ---
>  .../bindings/mmc/mmc-controller.yaml          | 92 +++++++++++++++++++
>  1 file changed, 92 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/mmc/mmc-controller.yaml b/Documentation/devicetree/bindings/mmc/mmc-controller.yaml
> index 080754e0ef35..87a83d966851 100644
> --- a/Documentation/devicetree/bindings/mmc/mmc-controller.yaml
> +++ b/Documentation/devicetree/bindings/mmc/mmc-controller.yaml
> @@ -212,6 +212,98 @@ properties:
>      description:
>        eMMC HS400 enhanced strobe mode is supported
>  
> +  # Below mentioned are the clock (phase) delays which are to be configured
> +  # in the controller while switching to particular speed mode. The range
> +  # of values are 0 to 359 degrees.
> +
> +  clk-phase-legacy:
> +    allOf:
> +      - $ref: /schemas/types.yaml#/definitions/uint32
> +      - minimum: 0
> +      - maximum: 359
> +    description:
> +      Input/Output Clock Delay pair in degrees for Legacy Mode.
> +
> +  clk-phase-mmc-hs:
> +    allOf:
> +      - $ref: /schemas/types.yaml#/definitions/uint32
> +      - minimum: 0
> +      - maximum: 359
> +    description:
> +      Input/Output Clock Delay pair degrees for MMC HS.
> +
> +  clk-phase-sd-hs:
> +    allOf:
> +      - $ref: /schemas/types.yaml#/definitions/uint32
> +      - minimum: 0
> +      - maximum: 359
> +    description:
> +      Input/Output Clock Delay pair in degrees for SD HS.
> +
> +  clk-phase-uhs-sdr12:
> +    allOf:
> +      - $ref: /schemas/types.yaml#/definitions/uint32
> +      - minimum: 0
> +      - maximum: 359
> +    description:
> +      Input/Output Clock Delay pair in degrees for SDR12.
> +
> +  clk-phase-uhs-sdr25:
> +    allOf:
> +      - $ref: /schemas/types.yaml#/definitions/uint32
> +      - minimum: 0
> +      - maximum: 359
> +    description:
> +      Input/Output Clock Delay pair in degrees for SDR25.
> +
> +  clk-phase-uhs-sdr50:
> +    allOf:
> +      - $ref: /schemas/types.yaml#/definitions/uint32
> +      - minimum: 0
> +      - maximum: 359
> +    description:
> +      Input/Output Clock Delay pair in degrees for SDR50.
> +
> +  clk-phase-uhs-sdr104:
> +    allOf:
> +      - $ref: /schemas/types.yaml#/definitions/uint32
> +      - minimum: 0
> +      - maximum: 359
> +    description:
> +      Input/Output Clock Delay pair in degrees for SDR104.
> +
> +  clk-phase-uhs-ddr50:
> +    allOf:
> +      - $ref: /schemas/types.yaml#/definitions/uint32
> +      - minimum: 0
> +      - maximum: 359
> +    description:
> +      Input/Output Clock Delay pair in degrees for SD DDR50.
> +
> +  clk-phase-mmc-ddr52:
> +    allOf:
> +      - $ref: /schemas/types.yaml#/definitions/uint32
> +      - minimum: 0
> +      - maximum: 359
> +    description:
> +      Input/Output Clock Delay pair in degrees for MMC DDR52.
> +
> +  clk-phase-mmc-hs200:
> +    allOf:
> +      - $ref: /schemas/types.yaml#/definitions/uint32
> +      - minimum: 0
> +      - maximum: 359
> +    description:
> +      Input/Output Clock Delay pair in degrees for MMC HS200.
> +
> +  clk-phase-mmc-hs400:
> +    allOf:
> +      - $ref: /schemas/types.yaml#/definitions/uint32
> +      - minimum: 0
> +      - maximum: 359
> +    description:
> +      Input/Output Clock Delay pair in degrees for MMC HS400.

This can be condensed into:

patternProperties:
  
"^clk-phase-(legacy|sd-hs|mmc-(hs|hs[24]00|ddr52)|uhs-(sdr(12|25|50|104)|ddr50))$":

Or if you want to divide them between SD and MMC ones, that would be 
fine for me.

Rob