Add PWM-DAC audio support for StarFive JH7110 RISC-V SoC

new file mode 100644
index 000000000000..e2b4db6aa2fb
@@ -0,0 +1,76 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/starfive,jh7110-pwmdac.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: StarFive JH7110 PWM-DAC Controller
+
+description:
+  The PWM-DAC Controller uses PWM square wave generators plus RC filters to
+  form a DAC for audio play in StarFive JH7110 SoC. This audio play controller
+  supports 16 bit audio format, up to 48K sampling frequency, up to left and
+  right dual channels.
+
+maintainers:
+  - Hal Feng <[email protected]>
+
+allOf:
+  - $ref: dai-common.yaml#
+
+properties:
+  compatible:
+    const: starfive,jh7110-pwmdac
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: PWMDAC APB
+      - description: PWMDAC CORE
+
+  clock-names:
+    items:
+      - const: apb
+      - const: core
+
+  resets:
+    maxItems: 1
+    description: PWMDAC APB
+
+  dmas:
+    maxItems: 1
+    description: TX DMA Channel
+
+  dma-names:
+    const: tx
+
+  "#sound-dai-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - resets
+  - dmas
+  - dma-names
+  - "#sound-dai-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    pwmdac@100b0000 {
+        compatible = "starfive,jh7110-pwmdac";
+        reg = <0x100b0000 0x1000>;
+        clocks = <&syscrg 157>,
+                 <&syscrg 158>;
+        clock-names = "apb", "core";
+        resets = <&syscrg 96>;
+        dmas = <&dma 22>;
+        dma-names = "tx";
+        #sound-dai-cells = <0>;
+    };

index 0903d87b17cb..686e71822383 100644
@@ -20281,6 +20281,13 @@ S:	Supported
 F:	Documentation/devicetree/bindings/mmc/starfive*
 F:	drivers/mmc/host/dw_mmc-starfive.c
 
+STARFIVE JH7110 PWMDAC DRIVER
+M:	Hal Feng <[email protected]>
+M:	Xingyu Wu <[email protected]>
+S:	Supported
+F:	Documentation/devicetree/bindings/sound/starfive,jh7110-pwmdac.yaml
+F:	sound/soc/starfive/jh7110_pwmdac.c
+
 STARFIVE JH7110 TDM DRIVER
 M:	Walker Chen <[email protected]>
 S:	Maintained

index fafb681f8c0a..279ac5c1d309 100644
@@ -7,6 +7,15 @@ config SND_SOC_STARFIVE
 	  the Starfive SoCs' Audio interfaces. You will also need to
 	  select the audio interfaces to support below.
 
+config SND_SOC_JH7110_PWMDAC
+	tristate "JH7110 PWM-DAC device driver"
+	depends on HAVE_CLK && SND_SOC_STARFIVE
+	select SND_SOC_GENERIC_DMAENGINE_PCM
+	select SND_SOC_SPDIF
+	help
+	 Say Y or M if you want to add support for StarFive JH7110
+	 PWM-DAC driver.
+
 config SND_SOC_JH7110_TDM
 	tristate "JH7110 TDM device driver"
 	depends on HAVE_CLK && SND_SOC_STARFIVE

index f7d960211d72..9e958f70ef51 100644
@@ -1,2 +1,3 @@
 # StarFive Platform Support
+obj-$(CONFIG_SND_SOC_JH7110_PWMDAC) += jh7110_pwmdac.o
 obj-$(CONFIG_SND_SOC_JH7110_TDM) += jh7110_tdm.o

index d2f3b9eb859b..0e98fcba3203 100644
@@ -38,6 +38,33 @@ gpio-restart {
 		gpios = <&sysgpio 35 GPIO_ACTIVE_HIGH>;
 		priority = <224>;
 	};
+
+	pwmdac_codec: pwmdac-codec {
+		compatible = "linux,spdif-dit";
+		#sound-dai-cells = <0>;
+	};
+
+	sound-pwmdac {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "StarFive-PWMDAC-Sound-Card";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		simple-audio-card,dai-link@0 {
+			reg = <0>;
+			format = "left_j";
+			bitclock-master = <&sndcpu0>;
+			frame-master = <&sndcpu0>;
+
+			sndcpu0: cpu {
+				sound-dai = <&pwmdac>;
+			};
+
+			codec {
+				sound-dai = <&pwmdac_codec>;
+			};
+		};
+	};
 };
 
 &dvp_clk {

@@ -185,6 +212,12 @@ &i2c6 {
 	status = "okay";
 };
 
+&pwmdac {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwmdac_pins>;
+	status = "okay";
+};
+
 &qspi {
 	#address-cells = <1>;
 	#size-cells = <0>;

@@ -290,6 +323,22 @@ GPOEN_SYS_I2C6_DATA,
 		};
 	};
 
+	pwmdac_pins: pwmdac-0 {
+		pwmdac-pins {
+			pinmux = <GPIOMUX(33, GPOUT_SYS_PWMDAC_LEFT,
+					      GPOEN_ENABLE,
+					      GPI_NONE)>,
+				 <GPIOMUX(34, GPOUT_SYS_PWMDAC_RIGHT,
+					      GPOEN_ENABLE,
+					      GPI_NONE)>;
+			bias-disable;
+			drive-strength = <2>;
+			input-disable;
+			input-schmitt-disable;
+			slew-rate = <0>;
+		};
+	};
+
 	spi0_pins: spi0-0 {
 		mosi-pins {
 			pinmux = <GPIOMUX(52, GPOUT_SYS_SPI0_TXD,

index a608433200e8..d3437a2cce3f 100644
@@ -512,6 +512,19 @@ tdm: tdm@10090000 {
 			status = "disabled";
 		};
 
+		pwmdac: pwmdac@100b0000 {
+			compatible = "starfive,jh7110-pwmdac";
+			reg = <0x0 0x100b0000 0x0 0x1000>;
+			clocks = <&syscrg JH7110_SYSCLK_PWMDAC_APB>,
+				 <&syscrg JH7110_SYSCLK_PWMDAC_CORE>;
+			clock-names = "apb", "core";
+			resets = <&syscrg JH7110_SYSRST_PWMDAC_APB>;
+			dmas = <&dma 22>;
+			dma-names = "tx";
+			#sound-dai-cells = <0>;
+			status = "disabled";
+		};
+
 		usb0: usb@10100000 {
 			compatible = "starfive,jh7110-usb";
 			ranges = <0x0 0x0 0x10100000 0x100000>;