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Date: Mon, 2 Jan 2017 20:49:45 +0200
From: Aaro Koskinen <aaro.koskinen@iki.fi>
To: Pali =?iso-8859-1?Q?Roh=E1r?= <pali.rohar@gmail.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>,
        Jarkko Nikula <jarkko.nikula@bitmer.com>,
        Tony Lindgren <tony@atomide.com>,
        Eduardo Valentin <edubezval@gmail.com>,
        Lars-Peter Clausen <lars@metafoo.de>, Nishanth Menon <nm@ti.com>,
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        joerg Reisenweber <joerg@openmoko.org>, linux-omap@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: Nokia N900 sound driver and ECI GPIOs
Message-ID: <20170102184945.m6maflaoihumd7nt@raspberrypi-2.musicnaut.iki.fi>
References: <201701012054.54505@pali>
 <6462f543-0422-8146-a196-f4e07c3ebb6f@ti.com>
 <20170102084432.GA6728@pali>
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Hi,

On Mon, Jan 02, 2017 at 09:44:32AM +0100, Pali Rohár wrote:
> On Monday 02 January 2017 10:23:23 Peter Ujfalusi wrote:
> > GPIO_182 is to select where to route the MIC line from the jack for the
> > ECI core to handle (when the TVOUT is disabled).
> 
> Yes, already figured out from schematic.
> 
> > I have no idea what the
> > gpio_178 should have been used for. It might be only needed for early
> > protos but not in production devices?
> 
> I do not know, reason why I'm asking.

The schematic shows ECI(5:0), but only 3 are connected/used. There were
3 other GPIOs reserved but not used in the final product.

A.