dts: bindings: i2c: Add RasbperryPi Pico I2C

Add Raspberry Pi Pico I2C that inheriting both DesignWare I2C
device and reset device.

Signed-off-by: TOKITA Hiroshi <[email protected]>

Author: soburi

dts/arm/rpi_pico/rp2040.dtsi

@@ -138,21 +138,23 @@
 		};
 
 		i2c0: i2c@40044000 {
-			compatible = "snps,designware-i2c";
+			compatible = "raspberrypi,pico-i2c", "snps,designware-i2c";
 			#address-cells = <1>;
 			#size-cells = <0>;
 			reg = <0x40044000 DT_SIZE_K(4)>;
+			resets = <&reset RPI_PICO_RESETS_RESET_I2C0>;
 			clocks = <&system_clk>;
 			interrupts = <23 RPI_PICO_DEFAULT_IRQ_PRIORITY>;
 			interrupt-names = "i2c0";
 			status = "disabled";
 		};
 
 		i2c1: i2c@40048000 {
-			compatible = "snps,designware-i2c";
+			compatible = "raspberrypi,pico-i2c", "snps,designware-i2c";
 			#address-cells = <1>;
 			#size-cells = <0>;
 			reg = <0x40048000 DT_SIZE_K(4)>;
+			resets = <&reset RPI_PICO_RESETS_RESET_I2C0>;
 			clocks = <&system_clk>;
 			interrupts = <24 RPI_PICO_DEFAULT_IRQ_PRIORITY>;
 			interrupt-names = "i2c1";

dts/bindings/i2c/raspberrypi,pico-i2c.yaml

@@ -0,0 +1,5 @@
+description: Raspberry Pi Pico I2C
+
+compatible: "raspberrypi,pico-i2c"
+
+include: ["snps,designware-i2c.yaml", "reset-device.yaml"]