linux-kernel - Re: [PATCH] gpio: add support for ITE IT87xx Super I/O GPIO.

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Message-ID: <20120318160718.GA26847@ericsson.com>
Date:	Sun, 18 Mar 2012 09:07:18 -0700
From:	Guenter Roeck <guenter.roeck@...csson.com>
To:	Diego Elio Pettenò <flameeyes@...meeyes.eu>
CC:	Grant Likely <grant.likely@...retlab.ca>,
	linux-kernel@...r.kernel.org,
	Linus Walleij <linus.walleij@...ricsson.com>,
	Denis Turischev <denis@...pulab.co.il>
Subject: Re: [PATCH] gpio: add support for ITE IT87xx Super I/O GPIO.

On Sat, Mar 17, 2012 at 07:53:42PM +0100, Diego Elio Pettenò wrote:
> Il giorno sab, 17/03/2012 alle 12.31 +0000, Grant Likely ha scritto:
> > Really?  The config line above claims IT8761E support.  How similar are
> > these devices?  Either this line needs to be more specifc, or the drivers
> > need to be merged.
> 
> I'm not sure about IT8761E, and it seems it's only partially the case
> from the code I read; it probably would be possible — Denis would you
> mind taking a look?
> 
> It could possibly work to merge them. For what it's worth I've more or
> less followed on the steps of the two watchdog timer drivers for IT87
> series.
> 
I don't think that would make sense. IT8761E has a completely different set
of registers. It is a "Legacy Low Pin Count I/O" only. The other chips are
environmental control chips. I didn't follow the context of this discussion,
but IT8761E does not support a watchdog. It also only supports 16 GPIO pins.

Guenter
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