From 3d345b5f7b2f613b6965fc3fc68de9f439752ffe Mon Sep 17 00:00:00 2001
From: Fabio Estevam <fabio.estevam@nxp.com>
Date: Tue, 19 Sep 2017 19:59:04 -0300
Subject: [PATCH] ASoC: tfa9879: Add device tree bindings
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Even though the tfa9879 driver can probe via device tree trough the
I2C core code, it is preferable to have explicit device tree
bindings instead [1], so add this support.
[1] https://www.spinics.net/lists/devicetree/msg195176.html
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Åukasz Majewski <lukma@denx.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
.../devicetree/bindings/sound/tfa9879.txt | 23 +++++++++++++++++++
sound/soc/codecs/tfa9879.c | 6 +++++
2 files changed, 29 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/tfa9879.txt
diff --git a/Documentation/devicetree/bindings/sound/tfa9879.txt b/Documentation/devicetree/bindings/sound/tfa9879.txt
new file mode 100644
index 0000000000000..23ba522d9e2b2
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/tfa9879.txt
@@ -0,0 +1,23 @@
+NXP TFA9879 class-D audio amplifier
+
+Required properties:
+
+- compatible : "nxp,tfa9879"
+
+- reg : the I2C address of the device
+
+Example:
+
+&i2c1 {
+ clock-frequency = <100000>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_i2c1>;
+ status = "okay";
+
+ codec: tfa9879@6c {
+ #sound-dai-cells = <0>;
+ compatible = "nxp,tfa9879";
+ reg = <0x6c>;
+ };
+};
+
diff --git a/sound/soc/codecs/tfa9879.c b/sound/soc/codecs/tfa9879.c
index 95e0a7abeb7ae..f8dd67ca0744c 100644
--- a/sound/soc/codecs/tfa9879.c
+++ b/sound/soc/codecs/tfa9879.c
@@ -312,9 +312,15 @@ static const struct i2c_device_id tfa9879_i2c_id[] = {
};
MODULE_DEVICE_TABLE(i2c, tfa9879_i2c_id);
+static const struct of_device_id tfa9879_of_match[] = {
+ { .compatible = "nxp,tfa9879", },
+ { }
+};
+
static struct i2c_driver tfa9879_i2c_driver = {
.driver = {
.name = "tfa9879",
+ .of_match_table = tfa9879_of_match,
},
.probe = tfa9879_i2c_probe,
.remove = tfa9879_i2c_remove,
--
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