overlays: Add overlay for ezsound 6x8 soundcard

Add the DT overlay for the ezsound 6x8 soundcard.

Signed-off-by: Stephen Gordon <gordoste@iinet.net.au>

Author: gordoste

arch/arm/boot/dts/overlays/ezsound-6x8iso-overlay.dts

@@ -0,0 +1,117 @@
+//Device tree overlay for ezsound 6x8 isolated card
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2712";
+
+	fragment@0 {
+		target = <&rp1_i2s0_18_21>;
+		__overlay__ {
+			pins = "gpio18", "gpio19", "gpio20", "gpio22", "gpio24",
+			"gpio26", "gpio21", "gpio23", "gpio25", "gpio27";
+		};
+	};
+
+	fragment@1 {
+		target = <&rp1_i2s1_18_21>;
+		__overlay__ {
+			pins = "gpio18", "gpio19", "gpio20", "gpio22", "gpio24",
+			"gpio26", "gpio21", "gpio23", "gpio25", "gpio27";
+		};
+	};
+
+	fragment@2 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "simple-audio-card";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			i2s-controller = <&i2s_clk_consumer>;
+			status="okay";
+
+			simple-audio-card,name = "ezsound-6x8";
+
+			dailink_out_master: simple-audio-card,dai-link@0 {
+				reg = <0>;
+				format = "i2s";
+				bitclock-master = <&pcm3168_playback>;
+				frame-master = <&pcm3168_playback>;
+				cpu {
+					sound-dai = <&i2s_clk_consumer>;
+					dai-tdm-slot-num = <2>;
+					dai-tdm-slot-width = <32>;
+				};
+				pcm3168_playback: codec {
+					system-clock-fixed;
+					mclk-fs = <256>;
+					sound-dai = <&pcm3168a 0>;
+					dai-tdm-slot-num = <2>;
+					dai-tdm-slot-width = <32>;
+				};
+			};
+			dailink_in_slave: simple-audio-card,dai-link@1 {
+				reg = <1>;
+				format = "i2s";
+				bitclock-master = <&pcm3168_capture>;
+				frame-master = <&pcm3168_capture>;
+				cpu {
+					sound-dai = <&i2s_clk_consumer>;
+					dai-tdm-slot-num = <2>;
+					dai-tdm-slot-width = <32>;
+				};
+				pcm3168_capture: codec {
+					system-clock-fixed;
+					mclk-fs = <256>;
+					sound-dai = <&pcm3168a 1>;
+					dai-tdm-slot-num = <2>;
+					dai-tdm-slot-width = <32>;
+				};
+			};
+		};
+	};
+
+	fragment@3 {
+		target-path = "/";
+		__overlay__ {
+			scki_clk: scki-clock {
+				compatible = "fixed-clock";
+				#clock-cells = <0>;
+				clock-frequency = <24576000>;
+			};
+		};
+	};
+
+	// Bring the I2S clock consumer block up
+	fragment@4 {
+		target = <&i2s_clk_consumer>;
+		__overlay__ {
+			#sound-dai-cells = <0>;
+			status = "okay";
+		};
+	};
+
+	fragment@5 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			pcm3168a: audio-codec@45 {
+				#sound-dai-cells = <1>;
+				compatible = "ti,pcm3168a";
+				status = "okay";
+				reg = <0x45>;
+				clocks = <&scki_clk>;
+				clock-names = "scki";
+				dac-force-cons;
+				VDD1-supply = <&vdd_3v3_reg>;
+				VDD2-supply = <&vdd_3v3_reg>;
+				VCCAD1-supply = <&vdd_5v0_reg>;
+				VCCAD2-supply = <&vdd_5v0_reg>;
+				VCCDA1-supply = <&vdd_5v0_reg>;
+				VCCDA2-supply = <&vdd_5v0_reg>;
+			};
+		};
+	};
+};