linux-kernel - Re: [PATCH v3 1/4] dt-bindings: usb: musb: Add support for MediaTek musb controller

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Message-ID: <1547728876.4433.237.camel@mhfsdcap03>
Date:   Thu, 17 Jan 2019 20:41:16 +0800
From:   Min Guo <min.guo@...iatek.com>
To:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
CC:     Bin Liu <b-liu@...com>, Rob Herring <robh+dt@...nel.org>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        "Alan Stern" <stern@...land.harvard.edu>,
        <chunfeng.yun@...iatek.com>, <linux-usb@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>, <tony@...mide.com>,
        <hdegoede@...hat.com>
Subject: Re: [PATCH v3 1/4] dt-bindings: usb: musb: Add support for MediaTek
 musb controller

Hello!

On Thu, 2019-01-17 at 14:06 +0300, Sergei Shtylyov wrote:
> Hello!
> 
> On 01/17/2019 10:15 AM, min.guo@...iatek.com wrote:
> 
> > From: Min Guo <min.guo@...iatek.com>
> > 
> > This adds support for MediaTek musb controller in
> > host, peripheral and otg mode.
> > 
> > Signed-off-by: Min Guo <min.guo@...iatek.com>
> > ---
> >  .../devicetree/bindings/usb/mediatek,musb.txt      | 43 ++++++++++++++++++++++
> >  1 file changed, 43 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/usb/mediatek,musb.txt
> > 
> > diff --git a/Documentation/devicetree/bindings/usb/mediatek,musb.txt b/Documentation/devicetree/bindings/usb/mediatek,musb.txt
> > new file mode 100644
> > index 0000000..3e3f671
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/usb/mediatek,musb.txt
> > @@ -0,0 +1,43 @@
> > +MediaTek musb DRD/OTG controller
> > +-------------------------------------------
> > +
> > +Required properties:
> > + - compatible      : should be "mediatek,mtk-musb"
> > + - reg             : specifies physical base address and size of
> > +   the registers
> 
>    I'd indent it more to align with "specifies", else it looks weird.

Okay.

> > + - interrupts      : interrupt used by musb controller
> > + - interrupt-names : must be "mc"
> > + - phys            : PHY specifier for the OTG phy
> > + - dr_mode         : should be one of "host", "peripheral" or "otg",
> > +   refer to usb/generic.txt
> 
>   Same here...

Okay.

> > + - clocks          : a list of phandle + clock-specifier pairs, one for
> > +   each entry in clock-names
> 
>    Here...

Okay.

> > + - clock-names     : must contain "main", "mcu", "univpll"
> > +   for clocks of controller
> 
>   And here.

Okay.

> > +
> > +Optional properties:
> > + - extcon : external connector for VBUS and IDPIN changes detection,
> 
>    ID pin, maybe?

Okay.

> > +   needed when supports dual-role mode.
> > + - vbus-supply : reference to the VBUS regulator, needed when supports
> > +   dual-role mode.
> > + - power-domains   : a phandle to USB power domain node to control USB's
> > +   MTCMOS
> [...]
> 
> MBR, Sergei