linux-kernel - Re: [PATCH V5 2/2] mfd: stmpe: Update DT support in stmpe driver

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Message-ID: <CAKohponeU539FR+XCKJQTFnoNKJCnAh5ESB1NGP7ZK0u4Tqwyg@mail.gmail.com>
Date:	Thu, 6 Dec 2012 16:12:42 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	Lee Jones <lee.jones@...aro.org>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	rabin.vincent@...ricsson.com, shiraz.hashim@...com,
	devicetree-discuss@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	spear-devel@...t.st.com, linus.walleij@...aro.org,
	Vipul Kumar Samar <vipulkumar.samar@...com>
Subject: Re: [PATCH V5 2/2] mfd: stmpe: Update DT support in stmpe driver

On 6 December 2012 16:05, Lee Jones <lee.jones@...aro.org> wrote:
>> > Or you could not put unnecessary bindings into the Device Tree
>> > by putting two and two together and realise that using the table
>> > is the correct thing to do instead. This actually gives reason
>> > to you previous patch, but should probably be fixed-up into it
>> > so it has some proper meaning/purpose. ;)
>>
>> Couldn't understand this one :(
>
> Really?

I tried again, but couldn't get it :(

> Let's break it down - what do you need "stmpe,id" for?

To distinguish two instances of of stmpe811 (for instance) on a board.
Names of stmpe sub-modules would contain .0, .1, if we have an id
passed to it. Passing -1 would create same names for both gpio blocks
which belonged to different stmpe811's.
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