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

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Message-ID: <1626166838.29490.4.camel@mhfsdcap03>
Date:   Tue, 13 Jul 2021 17:00:38 +0800
From:   Chunfeng Yun <chunfeng.yun@...iatek.com>
To:     Rob Herring <robh@...nel.org>
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 Mon, 2021-07-12 at 13:08 -0600, Rob Herring wrote:
> 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'.
There is already a property "mediatek,u3p-dis-msk", prefer to use the
same format, thanks

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