boards: renesas: Add DAC support for Renesas RA4 boards

Add support DAC for Renesas ek_ra4m1, ek_ra4w1, fpb_ra4e1,
voice_ra4e1, ek_ra4l1

Signed-off-by: Khoa Nguyen <khoa.nguyen.xh@renesas.com>

boards/renesas/ek_ra4l1/ek_ra4l1-pinctrl.dtsi

@@ -30,6 +30,14 @@
 		};
 	};
 
+	dac0_default: dac0_default {
+		group1 {
+			/* output */
+			psels = <RA_PSEL(RA_PSEL_DAC, 0, 4)>;
+			renesas,analog-enable;
+		};
+	};
+
 	pwm1_default: pwm1_default {
 		group1 {
 			/* GTIOC1A GTIOC1B */

boards/renesas/ek_ra4l1/ek_ra4l1.dts

@@ -141,6 +141,12 @@
 	pinctrl-names = "default";
 };
 
+&dac0 {
+	pinctrl-0 = <&dac0_default>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &port_irq6 {
 	interrupts = <14 12>;
 	status = "okay";

boards/renesas/ek_ra4m1/ek_ra4m1-pinctrl.dtsi

@@ -30,6 +30,14 @@
 		};
 	};
 
+	dac0_default: dac0_default {
+		group1 {
+			/* output */
+			psels = <RA_PSEL(RA_PSEL_DAC, 0, 14)>;
+			renesas,analog-enable;
+		};
+	};
+
 	pwm1_default: pwm1_default {
 		group1 {
 			/* GTIOC1A GTIOC1B */

boards/renesas/ek_ra4m1/ek_ra4m1.dts

@@ -102,6 +102,12 @@
 	pinctrl-names = "default";
 };
 
+&dac0 {
+	pinctrl-0 = <&dac0_default>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &port_irq0 {
 	interrupts = <27 12>;
 	status = "okay";

boards/renesas/ek_ra4w1/ek_ra4w1-pinctrl.dtsi

@@ -30,6 +30,14 @@
 		};
 	};
 
+	dac0_default: dac0_default {
+		group1 {
+			/* output */
+			psels = <RA_PSEL(RA_PSEL_DAC, 0, 14)>;
+			renesas,analog-enable;
+		};
+	};
+
 	pwm1_default: pwm1_default {
 		group1 {
 			/* GTIOC1A GTIOC1B */

boards/renesas/ek_ra4w1/ek_ra4w1.dts

@@ -90,6 +90,12 @@
 	pinctrl-names = "default";
 };
 
+&dac0 {
+	pinctrl-0 = <&dac0_default>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &port_irq4 {
 	interrupts = <27 12>;
 	status = "okay";

boards/renesas/fpb_ra4e1/fpb_ra4e1-pinctrl.dtsi

@@ -39,6 +39,14 @@
 		};
 	};
 
+	dac0_default: dac0_default {
+		group1 {
+			/* output */
+			psels = <RA_PSEL(RA_PSEL_DAC, 0, 14)>;
+			renesas,analog-enable;
+		};
+	};
+
 	pwm1_default: pwm1_default {
 		group1 {
 			/* GTIOC1A GTIOC1B */

boards/renesas/fpb_ra4e1/fpb_ra4e1.dts

@@ -120,6 +120,12 @@
 	pinctrl-names = "default";
 };
 
+&dac0 {
+	pinctrl-0 = <&dac0_default>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &port_irq1 {
 	interrupts = <41 12>;
 	status = "okay";

boards/renesas/voice_ra4e1/voice_ra4e1-pinctrl.dtsi

@@ -19,4 +19,12 @@
 			drive-strength = "high";
 		};
 	};
+
+	dac0_default: dac0_default {
+		group1 {
+			/* output */
+			psels = <RA_PSEL(RA_PSEL_DAC, 0, 14)>;
+			renesas,analog-enable;
+		};
+	};
 };

boards/renesas/voice_ra4e1/voice_ra4e1.dts

@@ -138,3 +138,9 @@
 &wdt {
 	status = "okay";
 };
+
+&dac0 {
+	pinctrl-0 = <&dac0_default>;
+	pinctrl-names = "default";
+	status = "okay";
+};