Add A20 I2S overlays

sun7i-a20/README.sun7i-a20-overlays

@@ -24,6 +24,8 @@ I2C bus 0 is used for the AXP209 PMIC
 - i2c2
 - i2c3
 - i2c4
+- i2s0
+- i2s1
 - mmc2
 - nand
 - pps-gpio
@@ -81,6 +83,18 @@ Activates TWI/I2C bus 4
 
 I2C4 pins (SCL, SDA): PI2, PI3
 
+### i2s0
+
+Activates SoC I2S controller 0
+
+I2S0 pins (MCLK, BCLK, LRCK, DO0, DO1, DO2, DO3, DI): PB5, PB6, PB7, PB8, PB9, PB10, PB11, PB12
+
+### i2s1
+
+Activates SoC I2S controller 1
+
+I2S1 pins (MCLK, BCLK, LRCK, DO, DI): PA9, PA14, PA15, PA16, PA17
+
 ### mmc2
 
 Activates SD/MMC controller 2. To be used on boards with second SD slot, eMMC

sun7i-a20/sun7i-a20-i2s0.dts

@@ -0,0 +1,25 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "allwinner,sun7i-a20";
+
+	fragment@0 {
+		target = <&pio>;
+		__overlay__ {
+			i2s0_pins: i2s0 {
+				pins = "PB5", "PB6", "PB7", "PB8", "PB9", "PB10", "PB11", "PB12";
+				function = "i2s0";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s0>;
+		__overlay__ {
+			pinctrl-names = "default";
+			pinctrl-0 = <&i2s0_pins>;
+			status = "okay";
+		};
+	};
+};

sun7i-a20/sun7i-a20-i2s1.dts

@@ -0,0 +1,25 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "allwinner,sun7i-a20";
+
+	fragment@0 {
+		target = <&pio>;
+		__overlay__ {
+			i2s1_pins: i2s1 {
+				pins = "PA9", "PA14", "PA15", "PA16", "PA17";
+				function = "i2s1";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s1>;
+		__overlay__ {
+			pinctrl-names = "default";
+			pinctrl-0 = <&i2s1_pins>;
+			status = "okay";
+		};
+	};
+};