linux-kernel - Re: [PATCH v1 1/2] dt-binding: usb: ci-hdrc-usb2: document Nuvoton NPCM supprt

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Date:   Mon, 18 Sep 2023 22:18:37 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Tomer Maimon <tmaimon77@...il.com>, peter.chen@...nel.org,
        gregkh@...uxfoundation.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, xu.yang_2@....com,
        peng.fan@....com, avifishman70@...il.com, tali.perry1@...il.com,
        joel@....id.au, venture@...gle.com, yuenn@...gle.com,
        benjaminfair@...gle.com, j.neuschaefer@....net
Cc:     openbmc@...ts.ozlabs.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v1 1/2] dt-binding: usb: ci-hdrc-usb2: document Nuvoton
 NPCM supprt

On 18/09/2023 18:59, Tomer Maimon wrote:
> Nuvoton NPCM BMC SoCs use ChipIdea silicon IP for the USB device controller.
> 
> Signed-off-by: Tomer Maimon <tmaimon77@...il.com>

Please use subject prefixes matching the subsystem. You can get them for
example with `git log --oneline -- DIRECTORY_OR_FILE` on the directory
your patch is touching. It's dt-bindings.


> ---
>  .../devicetree/bindings/usb/ci-hdrc-usb2.yaml    | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
> index 1394557517b1..9de4dfe004d1 100644
> --- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
> +++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.yaml
> @@ -16,6 +16,7 @@ properties:
>        - enum:
>            - chipidea,usb2
>            - lsi,zevio-usb
> +          - nuvoton,npcm-udc

You need SoC specific compatible.

>            - nvidia,tegra20-ehci
>            - nvidia,tegra20-udc
>            - nvidia,tegra30-ehci
> @@ -325,6 +326,20 @@ properties:
>      type: boolean
>      deprecated: true
>  
> +  nuvoton,sysgcr:
> +    $ref: /schemas/types.yaml#/definitions/phandle-array
> +    items:
> +      - items:
> +          - description: phandle to syscon that configures usb phy mux.
> +          - description: offset of usb phy mux selection.
> +          - description: mask usb phy mux selection.
> +          - description: value usb phy mux selection.
> +    description:
> +      A phandle to syscon with three arguments that configure usb phy mux.
> +      The argument one is the offset of usb phy mux selection, the argument two
> +      is the mask usb phy mux selection, the argument three is the mask usb phy
> +      mux selection.

Sorry, you miss phy driver. Don't use syscon instead of proper hardware
devices.


Best regards,
Krzysztof