linux-kernel - Re: [PATCH v2 5/5] ASoC: adau17x1: Support platform data via DT

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20160218173849.GA6065@sirena.org.uk>
Date:	Thu, 18 Feb 2016 17:38:49 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Rob Herring <robh@...nel.org>
Cc:	Andreas Irestål <andreas.irestal@...s.com>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Liam Girdwood <lgirdwood@...il.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
	Andreas Irestål <andire@...s.com>
Subject: Re: [PATCH v2 5/5] ASoC: adau17x1: Support platform data via DT

On Thu, Feb 18, 2016 at 08:37:35AM -0600, Rob Herring wrote:
> On Tue, Feb 16, 2016 at 01:56:45PM +0100, Andreas Irestål wrote:

> > +	MICBIAS_0_90_AVDD - 0.9 * AVDD
> > +	MICBIAS_0_65_AVDD - 0.65 * AVDD

> What does this mean?

It's specifying the microphone bias as a function of the AVDD supply
voltage.  This should be obvious to anyone with any knowledge of the
domain, it's a fairly common way of configuring such things.

> > +Optional properties (ADAU1361/ADAU1461/ADAU1761/ADAU1961 only)

> > + - adi,jack-detection	If present, configures codec to use the digmic/jackdet
> > +			pin for jack detection. must provide one of
> > +			JACKDETECT_ACTIVE_LO or JACKDETECT_ACTIVE_HI followed
> > +			by debounce time in ms, which must be 5, 10, 20, or 40.

> Seems like this could be common. No existing examples to copy?

If it's just a GPIO with a fancy name and some offloading (sounds like
it) there's an existing binding for the GPIO.

Download attachment "signature.asc" of type "application/pgp-signature" (474 bytes)