linux-kernel - Re: [PATCH v4] extcon: palmas: Added a new compatible type *ti,palmas-usb-vid*

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Date:	Fri, 23 Aug 2013 16:58:21 +0530
From:	Kishon Vijay Abraham I <kishon@...com>
To:	Stephen Warren <swarren@...dotorg.org>
CC:	<bcousson@...libre.com>, <tony@...mide.com>,
	<myungjoo.ham@...sung.com>, <cw00.choi@...sung.com>,
	<rob.herring@...xeda.com>, <pawel.moll@....com>,
	<mark.rutland@....com>, <ian.campbell@...rix.com>,
	<rob@...dley.net>, <george.cherian@...com>,
	<gregkh@...uxfoundation.org>, <linux-doc@...r.kernel.org>,
	<linux-omap@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux@....linux.org.uk>,
	<linux-kernel@...r.kernel.org>, <balbi@...com>
Subject: Re: [PATCH v4] extcon: palmas: Added a new compatible type *ti,palmas-usb-vid*

Hi,

On Friday 23 August 2013 02:20 AM, Stephen Warren wrote:
> On 08/22/2013 02:31 AM, Kishon Vijay Abraham I wrote:
>> The Palmas device contains only a USB VBUS-ID detector, so added a
>> compatible type *ti,palmas-usb-vid*. Didn't remove the existing compatible
>> types for backward compatibility.
> 
>> diff --git a/Documentation/devicetree/bindings/extcon/extcon-palmas.txt b/Documentation/devicetree/bindings/extcon/extcon-palmas.txt
> 
>>  PALMAS USB COMPARATOR
>>  Required Properties:
>> - - compatible : Should be "ti,palmas-usb" or "ti,twl6035-usb"
>> + - compatible : Should be "ti,palmas-usb-vid". "ti,twl6035-usb" and
>> +   "ti,palmas-usb" is deprecated and is kept for backward compatibility.
> 
> So this defines one new value and deprecates the two old values.

yeah.
> 
> Why isn't a new "ti,twl6035-usb-vid" entry useful? Don't you still need

yeah, it should be added too.
> SoC-specific compatible values so the driver can enable any SoC-specific
> bug-fixes/workarounds later if needed?

hmm.. Palmas is external to SoC. So not sure if adding SoC specific compatible
values is such a good idea.

Thanks
Kishon
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