linux-kernel - Re: [PATCH] ARM: pxa: activate pinctrl for device-tree machines

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Date:	Sun, 3 Apr 2016 21:13:44 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Robert Jarzmik <robert.jarzmik@...e.fr>
Cc:	Daniel Mack <daniel@...que.org>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Masahiro Yamada <yamada.masahiro@...ionext.com>
Subject: Re: [PATCH] ARM: pxa: activate pinctrl for device-tree machines

On Sat, Apr 2, 2016 at 8:56 PM, Robert Jarzmik <robert.jarzmik@...e.fr> wrote:

> Pincontrol is not yet ready for all PXA platforms.
> For example, a legacy platform, if PINCTRL was activated, will fail its
> calls to gpio_request() or gpio_direction_output(), as the pinctrl
> driver might not be available, such as for pxa25x and pxa3xx.
>
> As a step forward, activate pincontrol for all device-tree available
> machines, ie. pxa27x device-tree based and pxa3xx device-tree based.
>
> If it appears later that pincontrol is also required for legacy
> platforms and if the mfp->pinctrl conversion can be achieved, then
> PINCTRL will be activated for the whole PXA architecture.
>
> Cc: Linus Walleij <linus.walleij@...aro.org>
> Cc: Masahiro Yamada <yamada.masahiro@...ionext.com>
> Signed-off-by: Robert Jarzmik <robert.jarzmik@...e.fr>

Acked-by: Linus Walleij <linus.walleij@...aro.org>

Yours,
Linus Walleij