linux-kernel - Re: [PATCH] pinctrl-baytrail: add function mux checking in gpio pin request

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Date:	Wed, 05 Mar 2014 22:56:54 -0800
From:	Darren Hart <dvhart@...ux.intel.com>
To:	Chew Chiau Ee <chiau.ee.chew@...el.com>,
	Linus Walleij <linus.walleij@...aro.org>
CC:	Mathias Nyman <mathias.nyman@...ux.intel.com>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] pinctrl-baytrail: add function mux checking in gpio pin
 request

On 3/6/14, 5:59, "Chew Chiau Ee" <chiau.ee.chew@...el.com> wrote:

>From: Chew, Kean Ho <kean.ho.chew@...el.com>
>
>The requested gpio pin must has the func_pin_mux field set
>to GPIO function by BIOS/FW in advanced. Else, the gpio pin
>request would fail. This is to ensure that we do not expose
>any gpio pins which shall be used for alternate functions,
>for eg: wakeup pin, I/O interfaces for LPSS, etc.
>
>Signed-off-by: Chew, Kean Ho <kean.ho.chew@...el.com>
>Signed-off-by: Chew, Chiau Ee <chiau.ee.chew@...el.com>

Thanks for sending this out Chiau Ee,

Reviewed-by: Darren Hart <dvhart@...ux.intel.com>

-- 
Darren Hart
Yocto Project - Linux Kernel
Intel Open Source Technology Center




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