boards: renesas: Enable CEU video capture support on EK-RA8D1

- Add CEU pin configuration to ek_ra8d1-pinctrl.dtsi
- Enable CEU node and Arducam 20-pin connector in ek_ra8d1.dts
- Configure PWM3 as external XCLK via pwm-clock node
- Update board YAML to declare video support

Signed-off-by: Duy Vo <[email protected]>
Signed-off-by: Khanh Nguyen <[email protected]>

Author: KhanhNguyen-RVC

boards/renesas/ek_ra8d1/ek_ra8d1-pinctrl.dtsi

@@ -57,6 +57,19 @@
 		};
 	};
 
+	pwm3_default: pwm3_default {
+		group1 {
+			/* GTIOC3A */
+			psels = <RA_PSEL(RA_PSEL_GPT1, 4, 3)>;
+			drive-strength = "medium";
+		};
+		group2 {
+			/* GTIOC3B */
+			psels = <RA_PSEL(RA_PSEL_GPT1, 4, 4)>;
+			drive-strength = "medium";
+		};
+	};
+
 	pwm7_default: pwm7_default {
 		group1 {
 			/* GTIOC7A */
@@ -269,4 +282,22 @@
 			drive-strength = "high";
 		};
 	};
+
+	ceu_default: ceu_default {
+		group1 {
+			/* CEU */
+			psels = <RA_PSEL(RA_PSEL_CEU, 4, 0)>, /* VIO_D0 */
+				<RA_PSEL(RA_PSEL_CEU, 4, 1)>, /* VIO_D1 */
+				<RA_PSEL(RA_PSEL_CEU, 4, 5)>, /* VIO_D2 */
+				<RA_PSEL(RA_PSEL_CEU, 4, 6)>, /* VIO_D3 */
+				<RA_PSEL(RA_PSEL_CEU, 7, 0)>, /* VIO_D4 */
+				<RA_PSEL(RA_PSEL_CEU, 7, 1)>, /* VIO_D5 */
+				<RA_PSEL(RA_PSEL_CEU, 7, 2)>, /* VIO_D6 */
+				<RA_PSEL(RA_PSEL_CEU, 7, 3)>, /* VIO_D7 */
+				<RA_PSEL(RA_PSEL_CEU, 7, 8)>, /* VIO_CLK */
+				<RA_PSEL(RA_PSEL_CEU, 7, 9)>, /* VIO_HD */
+				<RA_PSEL(RA_PSEL_CEU, 7, 10)>; /* VIO_VD */
+			drive-strength = "high";
+		};
+	};
 };

boards/renesas/ek_ra8d1/ek_ra8d1.dts

@@ -12,6 +12,8 @@
 #include <zephyr/dt-bindings/memory-attr/memory-attr-arm.h>
 #include <zephyr/dt-bindings/memory-controller/renesas,ra-sdram.h>
 #include <zephyr/dt-bindings/adc/adc.h>
+#include <zephyr/dt-bindings/gpio/dvp-20pin-connector.h>
+#include <zephyr/dt-bindings/pwm/pwm.h>
 #include "ek_ra8d1-pinctrl.dtsi"
 
 / {
@@ -119,6 +121,15 @@
 			   <6 0 &ioporta 1 0>;  /* DISP_RST */
 	};
 
+	dvp_20pin_connector: dvp-20pin-connector {
+		compatible = "arducam,dvp-20pin-connector";
+		#gpio-cells = <2>;
+		gpio-map-mask = <0xffffffff 0xffffffc0>;
+		gpio-map-pass-thru = <0x0 0x3f>;
+		gpio-map = <DVP_20PIN_PEN 0 &ioport7 4 0>,
+			   <DVP_20PIN_PDN 0 &ioport7 5 0>;
+	};
+
 	aliases {
 		led0 = &led1;
 		sw0 = &button0;
@@ -313,6 +324,21 @@
 	};
 };
 
+&pwm3 {
+	pinctrl-0 = <&pwm3_default>;
+	pinctrl-names = "default";
+	interrupts = <51 12>, <52 12>;
+	interrupt-names = "gtioca", "overflow";
+
+	cam_clock: pwmclock {
+		compatible = "pwm-clock";
+		status = "disabled";
+		#clock-cells = <1>;
+		clock-frequency = <24000000>;
+		pwms = <&pwm3 0 PWM_KHZ(24000) PWM_POLARITY_NORMAL>;
+	};
+};
+
 &pwm7 {
 	pinctrl-0 = <&pwm7_default>;
 	interrupts = <40 1>, <41 1>;
@@ -419,6 +445,16 @@
 	};
 };
 
+&ceu {
+	pinctrl-0 = <&ceu_default>;
+	pinctrl-names = "default";
+	interrupts = <53 12>;
+	interrupt-names = "ceui";
+	clocks = <&pclka MSTPC 16>, <&cam_clock 0>;
+	clock-names = "pclk", "cam-xclk";
+	burst-transfer = <256>;
+};
+
 zephyr_lcdif: &lcdif {};
 
 zephyr_mipi_dsi: &mipi_dsi {};
@@ -427,6 +463,10 @@ renesas_mipi_i2c: &iic1 {};
 
 pmod_sd_shield: &sdhc1 {};
 
+dvp_20pin_i2c: &iic1 {};
+
+dvp_20pin_interface: &ceu {};
+
 &usbfs {
 	pinctrl-0 = <&usbfs_default>;
 	pinctrl-names = "default";

boards/renesas/ek_ra8d1/ek_ra8d1.yaml

@@ -16,4 +16,5 @@ supported:
   - counter
   - i2s
   - i3c
+  - video
 vendor: renesas