linux-kernel - Re: [RFC] pinctrl: Provide a generic device tree binding for per-pin pin controllers

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Date:	Tue, 28 Oct 2014 18:02:23 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Sascha Hauer <s.hauer@...gutronix.de>,
	Stephen Warren <swarren@...dotorg.org>
Cc:	Sascha Hauer <kernel@...gutronix.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RFC] pinctrl: Provide a generic device tree binding for per-pin
 pin controllers

On Thu, Oct 23, 2014 at 3:23 PM, Sascha Hauer <s.hauer@...gutronix.de> wrote:

> Most iomux controllers allow a configuration per pin. These currently
> have no common device tree binding. There are many different SoC
> specific bindings for this class of iomux controllers. Some controllers
> artificially group pins together where in hardware no groups exist (for
> example lantiq). Other controllers just put each pin into a separate
> group which explodes to many many strings to parse (Tegra30).

So I'd specifically like Stephen Warrens comments on this proposal,
as well as from everyone else doing per-pin device tree configs.

Yours,
Linus Walleij
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