linux-kernel - Re: [PATCH 3/6] dt-bindings: mtu3: add devicetree bindings

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Message-ID: <CAOGqxeUYEGKq5yhHbgcjPZtY06ZfDp2iCLZDqS3uyfCW523B4w@mail.gmail.com>
Date:	Thu, 12 May 2016 19:02:36 -0400
From:	Alan Cooper <alcooperx@...il.com>
To:	chunfeng yun <chunfeng.yun@...iatek.com>
Cc:	Rob Herring <robh@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Felipe Balbi <felipe.balbi@...ux.intel.com>,
	Mathias Nyman <mathias.nyman@...el.com>,
	Alan Stern <stern@...land.harvard.edu>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Pawel Moll <pawel.moll@....com>,
	Kumar Gala <galak@...eaurora.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Linus Walleij <linus.walleij@...aro.org>,
	Biao Huang <biao.huang@...iatek.com>,
	USB list <linux-usb@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, linux-gpio@...r.kernel.org
Subject: Re: [PATCH 3/6] dt-bindings: mtu3: add devicetree bindings

On Thu, May 12, 2016 at 3:24 AM, chunfeng yun <chunfeng.yun@...iatek.com> wrote:
>> > + - mediatek,enable-manual-drd : supports manual dual-role switch by sysfs
>> > +   interface; only used when receptacle is TYPE-A and also wants to support
>> > +   dual-role mode.
>>
>> sysfs is a Linux detail that doesn't apply to the binding. Does the
>> property mean "the IP block supports or doesn't support switching"  or
>> "I want to enable switching feature". Only the former belongs in DT.
>>
> It is the former case, and has little relation with sysfs interface.
> I will modify it later, sorry for my unclear description.

Could the property name be just "enable-manual-drd" instead of
"mediatek,enable-manual-drd"? I expect to have to add this
functionality to our USB driver in the near future.