linux-kernel - Re: [PATCH v3 12/18] dt-bindings: Add PLX Technology OXNAS pinctrl and gpio bindings

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Message-ID: <56FE8602.8020405@baylibre.com>
Date:	Fri, 1 Apr 2016 16:30:26 +0200
From:	Neil Armstrong <narmstrong@...libre.com>
To:	Rob Herring <robh@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v3 12/18] dt-bindings: Add PLX Technology OXNAS pinctrl
 and gpio bindings

On 03/31/2016 03:36 PM, Rob Herring wrote:
> On Thu, Mar 31, 2016 at 3:58 AM, Linus Walleij <linus.walleij@...aro.org> wrote:
>> On Fri, Mar 25, 2016 at 3:48 PM, Rob Herring <robh@...nel.org> wrote:
>>> On Thu, Mar 24, 2016 at 05:50:09PM +0100, Neil Armstrong wrote:
>>>> Add pinctrl and gpio DT bindings for PLX Technology OXNAS SoC Family.
>>>> This version supports the ARM926EJ-S based OX810SE SoC with 34 IO pins.
>>>>
>>>> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
>>
>>>> + - plxtech,gpio-bank: Specifies which bank a controller owns.
>>>
>>> How is this used?
>>
>> That is used to give a unique ID number to the bank.
>>
>> Hardware often need this to cross-reference pin controllers
>> to GPIO banks.
>>
>> I should add it as "gpio-bank" to the generic bindings
>> instead, several platforms already use this and there is
>> no point in having a vendor prefix in front of it.
> 
> Okay, now it is clearer. I don't want this documented as a common
> property because I don't want to encourage it's use. I only see 2
> users currently: ST and PIC32.
> 
> Looking at one example, it appears to be redundant already.
> nomadik-gpio-chips property already gives you the index. The index of
> the phandles is the bank numbering. PIC32 could do the same.
> 
> Rob
> 

Hi,

What should I use ?
I need to repost in a separate patchset with vendor replaced by Oxford Semiconductor.
Should I get rid of the vendor prefix of gpio-bank ?

Neil