linux-kernel - Re: [alsa-devel] [PATCH] ASoC: sgtl5000: fix powerup/down of micbias-voltage

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Message-ID: <CAOMZO5A9ypZOhA01hHwS3Eyig7t=3ivD2nnWh8NF7PB2P-w-Uw@mail.gmail.com>
Date:   Fri, 12 Jan 2018 22:05:31 -0200
From:   Fabio Estevam <festevam@...il.com>
To:     "Fischer, Christian" <fischerc@...ssphone.de>
Cc:     Mark Brown <broonie@...nel.org>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "tiwai@...e.com" <tiwai@...e.com>,
        "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "fabio.estevam@....com" <fabio.estevam@....com>,
        "bhumirks@...il.com" <bhumirks@...il.com>,
        "richard.leitner@...data.com" <richard.leitner@...data.com>
Subject: Re: [alsa-devel] [PATCH] ASoC: sgtl5000: fix powerup/down of micbias-voltage

Hi Christian,

On Fri, Jan 12, 2018 at 10:35 AM, Fischer, Christian
<fischerc@...ssphone.de> wrote:

> Thanks for this tip!
> The problem is that the machine-driver mxs-sgtl5000 don't support audio-routing.
> I've prepared a patch that will be submitted this noon.

What about using simple audio card binding in your device tree instead?

You could pass the simple-audio-card,routing property as described in
Documentation/devicetree/bindings/sound/simple-card.txt

A dts where sgtl5000 is used with simple audio card is
arch/arm/boot/dts/imx7s-warp.dts.

This one does not use simple-audio-card,routing, but at least it gives
you a reference.