boards: seeed: Fix XIAO MG24 standard uart pins

Properly use EUSART1 for the XIAO connector serial device, and switch XIAO
SPI to EUSART0 to allow simultaneous use.

Signed-off-by: Peter Johanson <[email protected]>

Author: petejohanson

boards/seeed/xiao_mg24/seeed_xiao_connector.dtsi

@@ -24,8 +24,8 @@
 	};
 };
 
-xiao_spi: &eusart1 {};
+xiao_spi: &eusart0 {};
 
-xiao_serial: &eusart0 {};
+xiao_serial: &eusart1 {};
 
 xiao_i2c: &i2c0 {};

boards/seeed/xiao_mg24/xiao_mg24-pinctrl.dtsi

@@ -10,27 +10,27 @@
 &pinctrl {
 	eusart0_default: eusart0_default {
 		group0 {
-			pins = <EUSART1_TX_PC6>;
+			pins = <EUSART0_TX_PA5>, <EUSART0_SCLK_PA3>;
 			drive-push-pull;
 			output-high;
 		};
 
 		group1 {
-			pins = <EUSART1_RX_PC7>;
+			pins = <EUSART0_RX_PA4>;
 			input-enable;
 			silabs,input-filter;
 		};
 	};
 
 	eusart1_default: eusart1_default {
 		group0 {
-			pins = <EUSART1_TX_PA5>, <EUSART1_SCLK_PA3>;
+			pins = <EUSART1_TX_PC6>;
 			drive-push-pull;
 			output-high;
 		};
 
 		group1 {
-			pins = <EUSART1_RX_PA4>;
+			pins = <EUSART1_RX_PC7>;
 			input-enable;
 			silabs,input-filter;
 		};

boards/seeed/xiao_mg24/xiao_mg24.dts

@@ -119,18 +119,18 @@
 };
 
 &eusart0 {
-	compatible = "silabs,eusart-uart";
-	current-speed = <115200>;
-	pinctrl-0 = <&eusart0_default>;
-	pinctrl-names = "default";
-};
-
-&eusart1 {
 	compatible = "silabs,eusart-spi";
 	#address-cells = <1>;
 	#size-cells = <0>;
 	clock-frequency = <4000000>;
 	cs-gpios = <&gpioc 7 GPIO_ACTIVE_LOW>;
+	pinctrl-0 = <&eusart0_default>;
+	pinctrl-names = "default";
+};
+
+&eusart1 {
+	compatible = "silabs,eusart-uart";
+	current-speed = <115200>;
 	pinctrl-0 = <&eusart1_default>;
 	pinctrl-names = "default";
 };