linux-kernel - Re: [PATCH] sound/tlv320dac33: Add device tree support

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Message-ID: <20180130122829.GA10373@amd>
Date:   Tue, 30 Jan 2018 13:28:29 +0100
From:   Pavel Machek <pavel@....cz>
To:     Mark Brown <broonie@...nel.org>
Cc:     Ladislav Michl <ladis@...ux-mips.org>, lgirdwood@...il.com,
        robh+dt@...nel.org, mark.rutland@....com, perex@...ex.cz,
        tiwai@...e.com, bhumirks@...il.com, alsa-devel@...a-project.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        pali.rohar@...il.com, sre@...nel.org,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-omap@...r.kernel.org, tony@...mide.com, khilman@...nel.org,
        aaro.koskinen@....fi, ivo.g.dimitrov.75@...il.com,
        patrikbachan@...il.com, serge@...lyn.com, abcloriens@...il.com,
        clayton@...ftyguy.net, martijn@...xit.nl,
        sakari.ailus@...ux.intel.com,
        Filip Matijević <filip.matijevic.pz@...il.com>
Subject: Re: [PATCH] sound/tlv320dac33: Add device tree support

On Tue 2018-01-30 11:32:38, Mark Brown wrote:
> On Tue, Jan 30, 2018 at 09:53:14AM +0100, Pavel Machek wrote:
> 
> > Well, notice I'm converting existing driver to device tree. And that
> > one already has GPIO dependency. It is possible that more work needs
> > to be done there, but that should not be a reason to delay this. Feel
> > free to help.
> 
> No, it's a very good reason to delay merging something.  A DT binding is
> an ABI so we need to sort out interface issues and describe things as
> well as we can, with board files it's not an ABI so we can just do any
> old thing that happens to work and while it might not be ideal it
> doesn't really matter since we can change it later if we need to.

Whatever.

Turns out this was GPIO after all.

I believe power-gpio and reset-gpio are equiavalent, with different
polarity. (After all, devices in reset consume less power).

If you prefer one solution over another, let me know...

									Pavel


-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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