From: Thomas Preston <thomas.preston@codethink.co.uk>
To: Marco Felsch <m.felsch@pengutronix.de>,
Charles Keepax <ckeepax@opensource.cirrus.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org, alsa-devel@alsa-project.org,
Rob Duncan <rduncan@tesla.com>,
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>,
Kirill Marinushkin <kmarinushkin@birdec.tech>,
linux-kernel@vger.kernel.org, Mark Brown <broonie@kernel.org>,
Takashi Iwai <tiwai@suse.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Annaliese McDermond <nh6z@nh6z.net>,
Paul Cercueil <paul@crapouillou.net>,
Vinod Koul <vkoul@kernel.org>, Rob Herring <robh+dt@kernel.org>,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
Nate Case <ncase@tesla.com>,
Cheng-Yi Chiang <cychiang@chromium.org>,
Patrick Glaser <pglaser@tesla.com>,
Jerome Brunet <jbrunet@baylibre.com>
Subject: Re: [alsa-devel] [PATCH v2 1/3] dt-bindings: ASoC: Add TDA7802 amplifier
Date: Tue, 30 Jul 2019 15:12:21 +0100 [thread overview]
Message-ID: <16a99e45-fd5a-2878-acf9-63518f9ca527@codethink.co.uk> (raw)
In-Reply-To: <20190730131209.rdv2kdlrpfeouh66@pengutronix.de>
On 30/07/2019 14:12, Marco Felsch wrote:
> Hi Charles,
>
> sorry for jumping in..
>
> On 19-07-30 13:27, Charles Keepax wrote:
>> On Tue, Jul 30, 2019 at 01:09:35PM +0100, Thomas Preston wrote:
>>> Signed-off-by: Thomas Preston <thomas.preston@codethink.co.uk>
>>> Cc: Patrick Glaser <pglaser@tesla.com>
>>> Cc: Rob Duncan <rduncan@tesla.com>
>>> Cc: Nate Case <ncase@tesla.com>
>>> ---
>>> .../devicetree/bindings/sound/tda7802.txt | 26 +++++++++++++++++++
>>> 1 file changed, 26 insertions(+)
>>> create mode 100644 Documentation/devicetree/bindings/sound/tda7802.txt
>>>
>>> diff --git a/Documentation/devicetree/bindings/sound/tda7802.txt b/Documentation/devicetree/bindings/sound/tda7802.txt
>>> new file mode 100644
>>> index 000000000000..f80aaf4f1ba0
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/sound/tda7802.txt
>>> @@ -0,0 +1,26 @@
>>> +ST TDA7802 audio processor
>>> +
>>> +This device supports I2C only.
>>> +
>>> +Required properties:
>>> +
>>> +- compatible : "st,tda7802"
>>> +- reg : the I2C address of the device
>>> +- enable-supply : a regulator spec for the PLLen pin
>
> Shouldn't that be a pin called 'pllen-gpios'? IMHO I would not use a
> regulator for that.
>
> Regards,
> Marco
>
Hi Marco,
We have multiple amplifiers hooked up in a chain, and all the PLLens
are connected to one GPIO. So we need to use a regulator so that
i2c-TDA7802:00 doesn't turn off the PLLen which i2c-TDA7802:01 still
requires.
This is why we use a regulator. Is there GPIO support for this?
Thanks,
Thomas
next prev parent reply other threads:[~2019-07-30 14:12 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-30 12:09 [PATCH v2 0/3] ASoC: Codecs: Add TDA7802 codec Thomas Preston
2019-07-30 12:09 ` [PATCH v2 1/3] dt-bindings: ASoC: Add TDA7802 amplifier Thomas Preston
2019-07-30 12:27 ` Charles Keepax
2019-07-30 13:12 ` Marco Felsch
2019-07-30 14:12 ` Thomas Preston [this message]
2019-07-30 14:33 ` [alsa-devel] " Mark Brown
2019-07-30 14:10 ` Thomas Preston
2019-07-30 12:09 ` [PATCH v2 2/3] ASoC: Add codec driver for ST TDA7802 Thomas Preston
2019-07-30 12:38 ` Charles Keepax
2019-07-30 15:49 ` [alsa-devel] " Thomas Preston
2019-07-30 14:58 ` Mark Brown
2019-07-30 17:26 ` [alsa-devel] " Thomas Preston
2019-07-31 6:06 ` Marco Felsch
2019-07-31 8:57 ` Thomas Preston
2019-07-30 12:09 ` [PATCH v2 3/3] ASoC: TDA7802: Add turn-on diagnostic routine Thomas Preston
2019-07-30 12:41 ` Charles Keepax
2019-07-30 14:04 ` [alsa-devel] " Thomas Preston
2019-07-30 14:18 ` Charles Keepax
2019-07-30 14:20 ` [alsa-devel] " Mark Brown
2019-07-30 15:27 ` Thomas Preston
2019-07-30 14:19 ` Mark Brown
2019-07-30 15:25 ` [alsa-devel] " Thomas Preston
2019-07-30 15:50 ` Mark Brown
2019-07-30 16:28 ` Thomas Preston
2019-07-31 8:03 ` Charles Keepax
2019-08-01 23:42 ` Mark Brown
2019-08-02 8:32 ` Thomas Preston
2019-08-02 11:10 ` Mark Brown
2019-08-02 14:51 ` Thomas Preston
2019-08-02 17:27 ` Mark Brown
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