# Create the directory for user overlays
mkdir -p /boot/overlay-user
cd /boot/overlay-user
# Create the overlay source file
cat << '_EOF_' > sound-hdmi-jack-i2s0-hat.dts
/dts-v1/;
/plugin/;
/ {
	compatible = "allwinner,sun50i-h618";
	fragment@0 {
		target = <&pio>;
		__overlay__ {
			ahub_daudio0_pins_d: ahub_daudio0_sleep {
				pins = "PI0", "PI1", "PI2", "PI3", "PI4";
				function = "gpio_in";
				drive-strength = <0x14>;
				bias-disable;
			};
			ahub_daudio0_pins_a: ahub_daudio0@0 {
				pins = "PI0", "PI1", "PI2";
				function = "i2s0";
				drive-strength = <0x14>;
				bias-disable;
			};
			ahub_daudio0_pins_b: ahub_daudio0@1 {
				pins = "PI3";
				function = "i2s0_dout0";
				drive-strength = <0x14>;
				bias-disable;
			};
			ahub_daudio0_pins_c: ahub_daudio0@2 {
				pins = "PI4";
				function = "i2s0_din0";
				drive-strength = <0x14>;
				bias-disable;
			};
		};
	};
	fragment@1 {
		target-path = "/soc";
		__overlay__ {
			ahub0_plat: ahub0_plat {
				#sound-dai-cells = <0>;
				compatible = "allwinner,sunxi-snd-plat-ahub";
				apb_num = <0>; /* for dma port 3 */
				dmas = <&dma 3>, <&dma 3>;
				dma-names = "tx", "rx";
				playback_cma = <128>;
				capture_cma = <128>;
				tx_fifo_size = <128>;
				rx_fifo_size = <128>;
				pinctrl-names = "default", "sleep";
				pinctrl_used;
				pinctrl-0 = <&ahub_daudio0_pins_a>, <&ahub_daudio0_pins_b>, <&ahub_daudio0_pins_c>;
				pinctrl-1 = <&ahub_daudio0_pins_d>;
				status = "okay";
			};
			ahub0_mach: ahub0_mach {
				compatible = "allwinner,sunxi-snd-mach";
				soundcard-mach,name = "ahubi2s0";
				soundcard-mach,format = "i2s";
				status = "okay";

				soundcard-mach,cpu {
					sound-dai = <&ahub0_plat>;
				};

				soundcard-mach,codec {
				};
			};
		};
	};
	fragment@2 {
		target-path = "/soc";
		__overlay__ {
			codec: codec {
			                       compatible = "allwinner,sun50i-h616-codec";
			                       status = "okay";
			                       allwinner,audio-routing = "Line Out", "LINEOUT";
			                       };
			 };
	};
	fragment@3 {
		target-path = "/soc";
		__overlay__ {
			ahub_dam_plat: ahub_dam_plat {
			                       compatible = "allwinner,sunxi-snd-plat-ahub_dam";
			                       status = "okay";
			                       };
			 };
	};
	fragment@4 {
		target-path = "/soc";
		__overlay__ {
			ahub1_plat: ahub1_plat {
			                       compatible = "allwinner,sunxi-snd-plat-ahub";
			                       #sound-dai-cells = <0x00>;
			                       status = "okay";
			                       };
			 };
	};
	fragment@5 {
		target-path = "/soc";
		__overlay__ {
			ahub1_mach: ahub1_mach {
			                       compatible = "allwinner,sunxi-snd-mach";
			                       soundcard-mach,name = "HDMI";
			                       soundcard-mach,format = "i2s";
			                       status = "okay";
			                       
			                       soundcard-mach,cpu {
					           sound-dai = <&ahub1_plat>;
				                   };

				               soundcard-mach,codec {
				                   };
			                       };
			 };
	};
};
_EOF_
# Install the device tree compiler
apt install device-tree-compiler
# Compile the overlay binary file
dtc -I dts -O dtb -o sound-hdmi-jack-i2s0-hat.dtbo -@ sound-hdmi-jack-i2s0-hat.dts
# To see the result of the compiler uncommit next line
#fdtdump sound-hdmi-jack-i2s0-hat.dtbo
# Enable the user overlay via U-Boot environment file
G_CONFIG_INJECT 'user_overlays=' 'user_overlays=sound-hdmi-jack-i2s0-hat' /boot/dietpiEnv.txt