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diff --git a/Bindings/sound/rt5665.txt b/Bindings/sound/rt5665.txt
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+RT5665/RT5666 audio CODEC
+
+This device supports I2C only.
+
+Required properties:
+
+- compatible : One of "realtek,rt5665", "realtek,rt5666".
+
+- reg : The I2C address of the device.
+
+- interrupts : The CODEC's interrupt output.
+
+Optional properties:
+
+- realtek,in1-differential
+- realtek,in2-differential
+- realtek,in3-differential
+- realtek,in4-differential
+ Boolean. Indicate MIC1/2/3/4 input are differential, rather than single-ended.
+
+- realtek,dmic1-data-pin
+ 0: dmic1 is not used
+ 1: using GPIO4 pin as dmic1 data pin
+ 2: using IN2N pin as dmic2 data pin
+
+- realtek,dmic2-data-pin
+ 0: dmic2 is not used
+ 1: using GPIO5 pin as dmic2 data pin
+ 2: using IN2P pin as dmic2 data pin
+
+- realtek,jd-src
+ 0: No JD is used
+ 1: using JD1 as JD source
+
+- realtek,ldo1-en-gpios : The GPIO that controls the CODEC's LDO1_EN pin.
+
+Pins on the device (for linking into audio routes) for RT5659/RT5658:
+
+ * DMIC L1
+ * DMIC R1
+ * DMIC L2
+ * DMIC R2
+ * IN1P
+ * IN1N
+ * IN2P
+ * IN2N
+ * IN3P
+ * IN3N
+ * IN4P
+ * IN4N
+ * HPOL
+ * HPOR
+ * LOUTL
+ * LOUTR
+ * MONOOUT
+ * PDML
+ * PDMR
+
+Example:
+
+rt5659 {
+ compatible = "realtek,rt5665";
+ reg = <0x1b>;
+ interrupt-parent = <&gpio>;
+ interrupts = <TEGRA_GPIO(W, 3) IRQ_TYPE_LEVEL_HIGH>;
+ realtek,ldo1-en-gpios =
+ <&gpio TEGRA_GPIO(V, 3) GPIO_ACTIVE_HIGH>;
+};