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From: Ladislav Michl <ladis@linux-mips.org>
To: Pavel Machek <pavel@ucw.cz>
Cc: "Filip Matijević" <filip.matijevic.pz@gmail.com>,
	lgirdwood@gmail.com, broonie@kernel.org, robh+dt@kernel.org,
	mark.rutland@arm.com, perex@perex.cz, tiwai@suse.com,
	bhumirks@gmail.com, alsa-devel@alsa-project.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	pali.rohar@gmail.com, sre@kernel.org,
	linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
	linux-omap@vger.kernel.org, tony@atomide.com, khilman@kernel.org,
	aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com,
	patrikbachan@gmail.com, serge@hallyn.com, abcloriens@gmail.com,
	clayton@craftyguy.net, martijn@brixit.nl,
	sakari.ailus@linux.intel.com
Subject: Re: [PATCH] sound/tlv320dac33: Add device tree support
Date: Tue, 30 Jan 2018 11:10:46 +0100	[thread overview]
Message-ID: <20180130101046.GA16474@lenoch> (raw)
In-Reply-To: <20180130100023.GB18104@amd>

On Tue, Jan 30, 2018 at 11:00:23AM +0100, Pavel Machek wrote:
> On Tue 2018-01-30 10:38:38, Ladislav Michl wrote:
> > On Tue, Jan 30, 2018 at 10:11:02AM +0100, Filip Matijević wrote:
> > > Hi,
> > > 
> 
> > > > 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.
> > 
> > Adding DT properties that need to be maintained for compatibility reasons
> > is a bad idea and very good reason to delay merging unfinished stuff.
> > And meanwhile it turned out it is not power-gpio :)
> 
> I believe reset-gpios and power-gpios are commonly used like
> this... and that's what the old code does.

Why do you care about old code when introducing new DT property?
Either it is reset, then lets call it reset-gpios or it is power supply
and then voltage regulator should be used (VAUX4.OUT is such a regulator
although it is unclear to me how it is controlled (*)).

> You are not helping.

The only way I can help here is to resend your patch with "reset-gpios"
used, which I'm pretty sure you can handle yourself.

(*) Remark "DAC33 enabled (for example, plug in a headset to the 3.5mm
AV connector and start music playback from the device)" in schematics
suggests it is controlled somehow.

  reply	other threads:[~2018-01-30 10:10 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-29 23:05 [PATCH] sound/tlv320dac33: Add device tree support Pavel Machek
2018-01-29 23:20 ` Ladislav Michl
2018-01-29 23:33   ` Pavel Machek
2018-01-30  8:34     ` Ladislav Michl
2018-01-30  8:53       ` Pavel Machek
2018-01-30  9:11         ` Filip Matijević
     [not found]           ` <1141b126-b883-a246-85ad-c5a69acb90bb-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-30  9:38             ` Ladislav Michl
2018-01-30 10:00               ` Pavel Machek
2018-01-30 10:10                 ` Ladislav Michl [this message]
2018-01-30 10:35                   ` Pavel Machek
2018-01-30 11:38                     ` Ladislav Michl
2018-01-31  9:24                       ` Peter Ujfalusi
2018-01-30 11:32         ` Mark Brown
     [not found]           ` <20180130113238.GA10525-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2018-01-30 12:28             ` Pavel Machek
2018-01-31  9:12   ` Peter Ujfalusi
2018-01-31 19:01 ` [PATCHv2] tlv320dac33: Add device tree bindings Pavel Machek
2018-02-01  7:39   ` Peter Ujfalusi
2018-02-05  8:24     ` [PATCHv3] " Pavel Machek
2018-02-06 12:11       ` Mark Brown
     [not found]         ` <20180206121122.GG5681-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2018-02-06 13:49           ` Pavel Machek
2018-02-06 15:27             ` Mark Brown
2018-02-24 20:57               ` Pavel Machek
2018-03-05 12:52                 ` Peter Ujfalusi
2018-02-09  2:25       ` Rob Herring
2018-02-05  6:08   ` [PATCHv2] " Rob Herring

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