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authorDaniel Mack <zonque@gmail.com>2012-09-28 01:36:44 +0200
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-09-28 15:12:09 +0200
commita31ebc349dade4e6a7a27e88669f20dbc6f8a3b8 (patch)
tree4c927a8f6e4a7be26f6776f332ba995801e2f17e /Documentation/devicetree/bindings/sound
parentASoC: wm_hubs: Ensure volume updates are handled during class W startup (diff)
downloadlinux-a31ebc349dade4e6a7a27e88669f20dbc6f8a3b8.tar.xz
linux-a31ebc349dade4e6a7a27e88669f20dbc6f8a3b8.zip
ALSA: ASoC: add DT bindings for CS4271
Apart from pure matching, the bindings also support setting the the reset gpio line. Signed-off-by: Daniel Mack <zonque@gmail.com> Cc: Alexander Sverdlin <subaparts@yandex.ru> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'Documentation/devicetree/bindings/sound')
-rw-r--r--Documentation/devicetree/bindings/sound/cs4271.txt36
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diff --git a/Documentation/devicetree/bindings/sound/cs4271.txt b/Documentation/devicetree/bindings/sound/cs4271.txt
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+Cirrus Logic CS4271 DT bindings
+
+This driver supports both the I2C and the SPI bus.
+
+Required properties:
+
+ - compatible: "cirrus,cs4271"
+
+For required properties on SPI, please consult
+Documentation/devicetree/bindings/spi/spi-bus.txt
+
+Required properties on I2C:
+
+ - reg: the i2c address
+
+
+Optional properties:
+
+ - reset-gpio: a GPIO spec to define which pin is connected to the chip's
+ !RESET pin
+
+Examples:
+
+ codec_i2c: cs4271@10 {
+ compatible = "cirrus,cs4271";
+ reg = <0x10>;
+ reset-gpio = <&gpio 23 0>;
+ };
+
+ codec_spi: cs4271@0 {
+ compatible = "cirrus,cs4271";
+ reg = <0x0>;
+ reset-gpio = <&gpio 23 0>;
+ spi-max-frequency = <6000000>;
+ };
+