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

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Date:   Tue, 30 Jan 2018 00:33:01 +0100
From:   Pavel Machek <pavel@....cz>
To:     Ladislav Michl <ladis@...ux-mips.org>
Cc:     lgirdwood@...il.com, broonie@...nel.org, 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 00:20:31, Ladislav Michl wrote:
> On Tue, Jan 30, 2018 at 12:05:39AM +0100, Pavel Machek wrote:
> > 
> > This adds device tree support to tlv320dac33.c.
> > 
> > Signed-off-by: Pavel Machek <pavel@....cz>
> > 
> > diff --git a/Documentation/devicetree/bindings/sound/tlv320dac33.txt b/Documentation/devicetree/bindings/sound/tlv320dac33.txt
> > new file mode 100644
> > index 0000000..6cbd311
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/sound/tlv320dac33.txt
> > @@ -0,0 +1,32 @@
> > +Texas Instruments - tlv320dac33 Codec module
> > +
> > +The tlv320dac33 serial control bus communicates through I2C protocols.
> > +
> > +Required properties:
> > +
> > +- compatible - "ti,tlv320dac33"
> > +- reg - I2C slave address
> > +
> > +Optional properties:
> > +
> > +- power-gpios - gpio pin to power the device, active high
> 
> While driver used gpio in platform data, isn't it more likely
> regulator which powers device?

                power-gpios = <&gpio2 28 0>; /* gpio_60 */

Looks like GPIO to me -- example is from Nokia N9. So this appears to
be correct.

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

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