linux-kernel - Re: [PATCH v2 02/13] dt-bindings: usb: mtu3: add optional property to disable usb2 ports

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Message-ID: <20210712190809.GA2310371@robh.at.kernel.org>
Date:   Mon, 12 Jul 2021 13:08:09 -0600
From:   Rob Herring <robh@...nel.org>
To:     Chunfeng Yun <chunfeng.yun@...iatek.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Felipe Balbi <balbi@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Thinh Nguyen <Thinh.Nguyen@...opsys.com>,
        linux-usb@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 02/13] dt-bindings: usb: mtu3: add optional property
 to disable usb2 ports

On Fri, Jun 18, 2021 at 05:29:07PM +0800, Chunfeng Yun wrote:
> Add support to disable specific usb2 host ports, it's useful when
> a usb2 port is disabled on some platforms, but enabled on others for
> the same SoC, another case is that the different package may support
> different number of ports.
> 
> Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
> ---
> v2: no changes
> ---
>  Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml b/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml
> index 2cac7a87ce36..3e6f2750f48d 100644
> --- a/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml
> +++ b/Documentation/devicetree/bindings/usb/mediatek,mtu3.yaml
> @@ -166,6 +166,12 @@ properties:
>      description: The mask to disable u3ports, bit0 for u3port0,
>        bit1 for u3port1, ... etc
>  
> +  mediatek,u2p-dis-msk:

Just spell out 'mask'.

> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: The mask to disable u2ports, bit0 for u2port0,
> +      bit1 for u2port1, ... etc; but can't disable u2port0 if dual role mode
> +      is enabled, so will be skipped in this case.
> +
>  # Required child node when support dual-role
>  patternProperties:
>    "^usb@[0-9a-f]+$":
> -- 
> 2.18.0
> 
>