From: Peter Ujfalusi <peter.ujfalusi@ti.com>
To: <broonie@kernel.org>, <lgirdwood@gmail.com>
Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org,
kuninori.morimoto.gx@renesas.com, linus.walleij@linaro.org,
linux-kernel@vger.kernel.org, robh+dt@kernel.org
Subject: [alsa-devel] [PATCH 1/2] bindings: sound: pcm3168a: Document optional RST gpio
Date: Wed, 13 Nov 2019 14:47:33 +0200 [thread overview]
Message-ID: <20191113124734.27984-2-peter.ujfalusi@ti.com> (raw)
In-Reply-To: <20191113124734.27984-1-peter.ujfalusi@ti.com>
On boards where the RST line is not pulled up, but it is connected to a
GPIO line this property must present in order to be able to enable the
codec.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
Documentation/devicetree/bindings/sound/ti,pcm3168a.txt | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/ti,pcm3168a.txt b/Documentation/devicetree/bindings/sound/ti,pcm3168a.txt
index 5d9cb84c661d..f30aebc7603a 100644
--- a/Documentation/devicetree/bindings/sound/ti,pcm3168a.txt
+++ b/Documentation/devicetree/bindings/sound/ti,pcm3168a.txt
@@ -25,6 +25,12 @@ Required properties:
For required properties on SPI/I2C, consult SPI/I2C device tree documentation
+Optional properties:
+
+ - rst-gpios : Optional RST gpio line for the codec
+ RST = low: device power-down
+ RST = high: device is enabled
+
Examples:
i2c0: i2c0@0 {
@@ -34,6 +40,7 @@ i2c0: i2c0@0 {
pcm3168a: audio-codec@44 {
compatible = "ti,pcm3168a";
reg = <0x44>;
+ rst-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
clocks = <&clk_core CLK_AUDIO>;
clock-names = "scki";
VDD1-supply = <&supply3v3>;
--
Peter
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
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next prev parent reply other threads:[~2019-11-13 12:48 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-13 12:47 [alsa-devel] [PATCH 0/2] ASoC: pcm3168a: Poor man's RST gpio handling Peter Ujfalusi
2019-11-13 12:47 ` Peter Ujfalusi [this message]
2019-11-18 13:08 ` [alsa-devel] [PATCH 1/2] bindings: sound: pcm3168a: Document optional RST gpio Mark Brown
2019-11-18 14:46 ` Peter Ujfalusi
2019-11-18 16:01 ` Mark Brown
2019-11-18 13:09 ` [alsa-devel] Applied "ASoC: pcm3168a: Document optional RST gpio" to the asoc tree Mark Brown
2019-11-18 21:32 ` [alsa-devel] [PATCH 1/2] bindings: sound: pcm3168a: Document optional RST gpio Rob Herring
2019-11-13 12:47 ` [alsa-devel] [PATCH 2/2] ASoC: pcm3168a: Add support for optional RST gpio handling Peter Ujfalusi
2019-11-18 13:09 ` [alsa-devel] Applied "ASoC: pcm3168a: Add support for optional RST gpio handling" to the asoc tree Mark Brown
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