linux-kernel - Re: [PATCH] pinctrl: establish pull-up/pull-down terminology

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Message-ID: <51C88A39.3040201@wwwdotorg.org>
Date:	Mon, 24 Jun 2013 12:04:41 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Laurent Pinchart <laurent.pinchart@...asonboard.com>
CC:	James Hogan <james.hogan@...tec.com>,
	Linus Walleij <linus.walleij@...ricsson.com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Stephen Warren <swarren@...dia.com>,
	� <heiko@...ech.de>,
	Linus Walleij <linus.walleij@...aro.org>,
	Anmar Oueja <anmar.oueja@...aro.org>
Subject: Re: [PATCH] pinctrl: establish pull-up/pull-down terminology

On 06/21/2013 05:30 PM, Laurent Pinchart wrote:
> Hi Stephen,
> 
> On Friday 21 June 2013 13:06:47 Stephen Warren wrote:
...
>> IIRC the idea of the PULL_PIN_DEFAULT was to avoid having to specify
>> UP/DOWN for each pin/group, but could just say "default", which would
>> then reduce the number of pinctrl mapping table entries or pinctrl DT
>> property entries.
> 
> I may be mistaken, but I've understood the PULL_PIN_DEFAULT option as a way to 
> select the default bias configuration when the default value is hardware-
> controlled, not as a pure software option.

That's my understanding too.


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