ASoC: dt-bindings: rt9120: Add initial bindings

new file mode 100644
index 00000000..6d16795
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/richtek,rt9120.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RT9120 Class-D audio amplifier
+
+maintainers:
+  - ChiYuan Huang <[email protected]>
+
+description: |
+  The RT9120 is a high efficiency, I2S-input, stereo audio power amplifier
+  delivering 2*20W into 8 Ohm BTL speaker loads. It supports the wide input
+  voltage  range from 4.5V to 26.4V to meet the need on most common
+  applications like as TV, monitors. home entertainment, electronic music
+  equipment.
+
+properties:
+  compatible:
+    enum:
+      - richtek,rt9120
+
+  reg:
+    description: I2C device address
+    maxItems: 1
+
+  pwdnn-gpios:
+    description: GPIO used for power down, low active
+    maxItems: 1
+
+  richtek,use-dvdd-1p8v:
+    description: Indicate DVDD 1P8V is used, default for 3P3V or 5V design
+    type: boolean
+
+  '#sound-dai-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - '#sound-dai-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      rt9120@1a {
+        compatible = "richtek,rt9120";
+        reg = <0x1a>;
+        #sound-dai-cells = <0>;
+        pwdnn-gpios = <&gpio26 2 0>;
+        richtek,use-dvdd-1p8v;
+      };
+    };

index 82ee233..155050d 100644
@@ -187,6 +187,7 @@ config SND_SOC_ALL_CODECS
 	imply SND_SOC_RT715_SDCA_SDW
 	imply SND_SOC_RT1308_SDW
 	imply SND_SOC_RT1316_SDW
+	imply SND_SOC_RT9120
 	imply SND_SOC_SDW_MOCKUP
 	imply SND_SOC_SGTL5000
 	imply SND_SOC_SI476X

@@ -1288,6 +1289,15 @@ config SND_SOC_RT715_SDCA_SDW
 	select REGMAP_SOUNDWIRE
 	select REGMAP_SOUNDWIRE_MBQ
 
+config SND_SOC_RT9120
+	tristate "Richtek RT9120 Stereo Class-D Amplifier"
+	depends on I2C
+	select REGMAP_I2C
+	select GPIOLIB
+	help
+	  Enable support for Richtek RT9120 20W, stereo, inductor-less,
+	  high-efficiency Class-D audio amplifier.
+
 config SND_SOC_SDW_MOCKUP
 	tristate "SoundWire mockup codec"
 	depends on EXPERT

index 8dcea2c..5ba164d 100644
@@ -203,6 +203,7 @@ snd-soc-rt711-objs := rt711.o rt711-sdw.o
 snd-soc-rt711-sdca-objs := rt711-sdca.o rt711-sdca-sdw.o
 snd-soc-rt715-objs := rt715.o rt715-sdw.o
 snd-soc-rt715-sdca-objs := rt715-sdca.o rt715-sdca-sdw.o
+snd-soc-rt9120-objs := rt9120.o
 snd-soc-sdw-mockup-objs := sdw-mockup.o
 snd-soc-sgtl5000-objs := sgtl5000.o
 snd-soc-alc5623-objs := alc5623.o

@@ -531,6 +532,7 @@ obj-$(CONFIG_SND_SOC_RT711)     += snd-soc-rt711.o
 obj-$(CONFIG_SND_SOC_RT711_SDCA_SDW)     += snd-soc-rt711-sdca.o
 obj-$(CONFIG_SND_SOC_RT715)     += snd-soc-rt715.o
 obj-$(CONFIG_SND_SOC_RT715_SDCA_SDW)     += snd-soc-rt715-sdca.o
+obj-$(CONFIG_SND_SOC_RT9120)	+= snd-soc-rt9120.o
 obj-$(CONFIG_SND_SOC_SDW_MOCKUP)     += snd-soc-sdw-mockup.o
 obj-$(CONFIG_SND_SOC_SGTL5000)  += snd-soc-sgtl5000.o
 obj-$(CONFIG_SND_SOC_SIGMADSP)	+= snd-soc-sigmadsp.o