linux-kernel - Re: [PATCH v3 1/1] pinctrl: add Intel BayTrail GPIO/pinctrl support

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Message-ID: <20140424062719.GZ30677@intel.com>
Date:	Thu, 24 Apr 2014 09:27:19 +0300
From:	"Westerberg, Mika" <mika.westerberg@...el.com>
To:	Linus Walleij <linus.walleij@...aro.org>
Cc:	Timur Tabi <timur@...eaurora.org>,
	Mathias Nyman <mathias.nyman@...ux.intel.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	lkml <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Subject: Re: [PATCH v3 1/1] pinctrl: add Intel BayTrail GPIO/pinctrl support

On Thu, Apr 24, 2014 at 12:20:12AM +0200, Linus Walleij wrote:
> On Wed, Apr 23, 2014 at 5:14 PM, Timur Tabi <timur@...eaurora.org> wrote:
> 
> > How are the pin muxes normally configured in ACPI?
> 
> VERY good question.

Typically this is done by the boot firmware (BIOS in this case). So the OS
doesn't need to deal with that.

AFAICT ACPI doesn't know anything about pin muxing.
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