linux-kernel - Re: [PATCH v2] dt-bindings: mtd: drop mtd/cortina,gemini-flash.txt

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Date:   Wed, 9 Feb 2022 15:18:41 -0600
From:   Rob Herring <robh@...nel.org>
To:     Corentin Labbe <clabbe@...libre.com>
Cc:     linus.walleij@...aro.org, miquel.raynal@...tlin.com,
        richard@....at, vigneshr@...com, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mtd@...ts.infradead.org
Subject: Re: [PATCH v2] dt-bindings: mtd: drop mtd/cortina,gemini-flash.txt

On Mon, Jan 31, 2022 at 08:08:58AM +0000, Corentin Labbe wrote:
> Drop mtd/cortina,gemini-flash.txt since it is nearly already handled by
> Documentation/devicetree/bindings/mtd/mtd-physmap.yaml.
> 
> Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
> Signed-off-by: Corentin Labbe <clabbe@...libre.com>
> ---
> Change since v1:
> - fixed typo on syscon
> 
>  .../bindings/mtd/cortina,gemini-flash.txt     | 24 -------------------
>  .../devicetree/bindings/mtd/mtd-physmap.yaml  | 18 +++++++++++++-
>  2 files changed, 17 insertions(+), 25 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/mtd/cortina,gemini-flash.txt
> 
> diff --git a/Documentation/devicetree/bindings/mtd/cortina,gemini-flash.txt b/Documentation/devicetree/bindings/mtd/cortina,gemini-flash.txt
> deleted file mode 100644
> index efa5b2aba829..000000000000
> --- a/Documentation/devicetree/bindings/mtd/cortina,gemini-flash.txt
> +++ /dev/null
> @@ -1,24 +0,0 @@
> -Flash device on Cortina Systems Gemini SoC
> -
> -This flash is regular CFI compatible (Intel or AMD extended) flash chips with
> -some special bits that can be controlled by the machine's system controller.
> -
> -Required properties:
> -- compatible : must be "cortina,gemini-flash", "cfi-flash";
> -- reg : memory address for the flash chip
> -- syscon : must be a phandle to the system controller
> -- bank-width : width in bytes of flash interface, should be <2>
> -
> -For the rest of the properties, see mtd-physmap.yaml.
> -
> -The device tree may optionally contain sub-nodes describing partitions of the
> -address space. See partition.txt for more detail.
> -
> -Example:
> -
> -flash@...00000 {
> -	compatible = "cortina,gemini-flash", "cfi-flash";
> -	reg = <0x30000000 0x01000000>;
> -	syscon = <&syscon>;
> -	bank-width = <2>;
> -};
> diff --git a/Documentation/devicetree/bindings/mtd/mtd-physmap.yaml b/Documentation/devicetree/bindings/mtd/mtd-physmap.yaml
> index f827984936f6..82eb4e0f453b 100644
> --- a/Documentation/devicetree/bindings/mtd/mtd-physmap.yaml
> +++ b/Documentation/devicetree/bindings/mtd/mtd-physmap.yaml
> @@ -44,7 +44,9 @@ properties:
>                - numonyx,js28f128
>                - sst,sst39vf320
>                - xlnx,xps-mch-emc-2.00.a
> -          - const: cfi-flash
> +          - enum:
> +              - cfi-flash
> +              - jedec-flash

Why is jedec-flash being added? The old doc made no mention of it.

>        - items:
>            - enum:
>                - cypress,cy7c1019dv33-10zsxi
> @@ -127,6 +129,20 @@ required:
>    - compatible
>    - reg
>  
> +if:
> +  properties:
> +    compatible:
> +      contains:
> +        const: cortina,gemini-flash
> +then:
> +  properties:
> +    syscon:
> +      $ref: /schemas/types.yaml#/definitions/phandle
> +      description:
> +        Phandle to the syscon controller
> +  required:
> +    - syscon
> +
>  # FIXME: A parent bus may define timing properties
>  additionalProperties: true
>  
> -- 
> 2.34.1
> 
>