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

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Message-ID: <DD64F087E8F0B540A1C9216D6716FFBDF994813E@defrsexc01.swissphone.de>
Date:   Fri, 12 Jan 2018 12:35:17 +0000
From:   "Fischer, Christian" <fischerc@...ssphone.de>
To:     Mark Brown <broonie@...nel.org>
CC:     "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "perex@...ex.cz" <perex@...ex.cz>,
        "tiwai@...e.com" <tiwai@...e.com>,
        "richard.leitner@...data.com" <richard.leitner@...data.com>,
        "fabio.estevam@....com" <fabio.estevam@....com>,
        "bhumirks@...il.com" <bhumirks@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ASoC: sgtl5000: fix powerup/down of micbias-voltage

Hi Mark,

> Has your board connected the bias to the microphone widget it defines?
> Unless your board says that the bias is in use on a given board it won't be enabled.

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.

Regards,
Christian