drivers: spi: siwx91x: DTS changes for siwx91x SPI driver

1. Create a YAML file for SPI node
2. Add SPI node in the siwx917.dtsi

Signed-off-by: Sai Santhosh Malae <[email protected]>

Author: smalae

dts/arm/silabs/siwg917.dtsi

@@ -314,6 +314,17 @@
 			prescaler = <1>;
 			status = "disabled";
 		};
+
+		spi0: spi@45030000 {
+			compatible = "silabs,gspi";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0x45030000 0xBC>;
+			interrupts = <46 0>;
+			interrupt-names = "gspi";
+			clocks = <&clock0 SIWX91X_CLK_GSPI>;
+			status = "disabled";
+		};
 	};
 };
 

dts/bindings/spi/silabs,gspi.yaml

@@ -0,0 +1,11 @@
+description: Silabs GSPI
+compatible: "silabs,gspi"
+
+include: [spi-controller.yaml, pinctrl-device.yaml]
+
+properties:
+  reg:
+    required: true
+
+  interrupts:
+    required: true