summaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/sound/rt5640.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/sound/rt5640.txt')
-rw-r--r--Documentation/devicetree/bindings/sound/rt5640.txt53
1 files changed, 53 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/rt5640.txt b/Documentation/devicetree/bindings/sound/rt5640.txt
new file mode 100644
index 000000000..bac4d9ac1
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/rt5640.txt
@@ -0,0 +1,53 @@
+RT5640/RT5639 audio CODEC
+
+This device supports I2C only.
+
+Required properties:
+
+- compatible : One of "realtek,rt5640" or "realtek,rt5639".
+
+- reg : The I2C address of the device.
+
+- interrupts : The CODEC's interrupt output.
+
+Optional properties:
+
+- realtek,in1-differential
+- realtek,in2-differential
+ Boolean. Indicate MIC1/2 input are differential, rather than single-ended.
+
+- realtek,ldo1-en-gpios : The GPIO that controls the CODEC's LDO1_EN pin.
+
+Pins on the device (for linking into audio routes) for RT5639/RT5640:
+
+ * DMIC1
+ * DMIC2
+ * MICBIAS1
+ * IN1P
+ * IN1R
+ * IN2P
+ * IN2R
+ * HPOL
+ * HPOR
+ * LOUTL
+ * LOUTR
+ * SPOLP
+ * SPOLN
+ * SPORP
+ * SPORN
+
+Additional pins on the device for RT5640:
+
+ * MONOP
+ * MONON
+
+Example:
+
+rt5640 {
+ compatible = "realtek,rt5640";
+ reg = <0x1c>;
+ interrupt-parent = <&gpio>;
+ interrupts = <TEGRA_GPIO(W, 3) GPIO_ACTIVE_HIGH>;
+ realtek,ldo1-en-gpios =
+ <&gpio TEGRA_GPIO(V, 3) GPIO_ACTIVE_HIGH>;
+};