boards: m5stack_cores3: add LCD display support

Author: soburi

boards/m5stack/m5stack_cores3/Kconfig.defconfig

@@ -5,7 +5,17 @@
 
 if BOARD_M5STACK_CORES3_ESP32S3_PROCPU || BOARD_M5STACK_CORES3_ESP32S3_PROCPU_SE
 
+config DISPLAY
+	default y
+
 config INPUT
 	default y
 
+if MIPI_DBI
+
+config MIPI_DBI_INIT_PRIORITY
+	default 82
+
+endif # MIPI_DBI
+
 endif # BOARD_M5STACK_CORES3_ESP32S3_PROCPU || BOARD_M5STACK_CORES3_ESP32S3_PROCPU_SE

boards/m5stack/m5stack_cores3/doc/index.rst

@@ -192,6 +192,27 @@ application.
          :board: m5stack_cores3/esp32s3/procpu/se
          :goals: flash
 
+Display
+=======
+
+The on-board ILI9342C LCD can be exercised with the LVGL sample application.
+
+.. tabs::
+
+   .. group-tab:: M5Stack CoreS3
+
+      .. zephyr-app-commands::
+         :zephyr-app: samples/subsys/display/lvgl
+         :board: m5stack_cores3/esp32s3/procpu
+         :goals: build
+
+   .. group-tab:: M5Stack CoreS3 SE
+
+      .. zephyr-app-commands::
+         :zephyr-app: samples/subsys/display/lvgl
+         :board: m5stack_cores3/esp32s3/procpu/se
+         :goals: build
+
 The baud rate of 921600bps is set by default. If experiencing issues when flashing,
 try using different values by using ``--esp-baud-rate <BAUD>`` option during
 ``west flash`` (e.g. ``west flash --esp-baud-rate 115200``).

boards/m5stack/m5stack_cores3/m5stack_cores3_procpu_common.dtsi

@@ -6,6 +6,8 @@
 
 #include <espressif/esp32s3/esp32s3_wroom_n16r8.dtsi>
 #include <espressif/partitions_0x0_amp.dtsi>
+#include <dt-bindings/spi/spi.h>
+#include <zephyr/dt-bindings/display/ili9xxx.h>
 #include "m5stack_cores3-pinctrl.dtsi"
 #include "m5stack_mbus_connectors.dtsi"
 #include "grove_connectors.dtsi"
@@ -20,6 +22,7 @@
 		zephyr,rtc = &bm8563_rtc;
 		zephyr,bt-hci = &esp32_bt_hci;
 		zephyr,touch = &ft6336_touch;
+		zephyr,display = &ili9342c;
 	};
 
 	aliases {
@@ -33,12 +36,36 @@
 		sdhc0 = &sd0;
 		led0 = &axp2101_led;
 		fuel-gauge0 = &fuel_gauge;
+		display = &ili9342c;
 	};
 
 	lvgl_pointer {
 		compatible = "zephyr,lvgl-pointer-input";
 		input = <&ft6336_touch>;
 	};
+
+	mipi_dbi {
+		compatible = "zephyr,mipi-dbi-spi";
+		spi-dev = <&spi2>;
+		duplex = <SPI_HALF_DUPLEX>;
+		mipi-mode = "MIPI_DBI_MODE_SPI_3WIRE";
+		write-only;
+		reset-gpios = <&aw9523b_gpio 13 GPIO_ACTIVE_LOW>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ili9342c: ili9342c@0 {
+		        compatible = "ilitek,ili9342c";
+		        reg = <0>;
+		        mipi-max-frequency = <40000000>;
+		        vin-supply = <&vcc_bl>;
+		        pixel-format = <ILI9XXX_PIXEL_FORMAT_RGB565>;
+		        display-inversion;
+		        width = <320>;
+		        height = <240>;
+		        rotation = <0>;
+		};
+	};
 };
 
 &usb_serial {
@@ -212,10 +239,10 @@
 	status = "okay";
 	#address-cells = <1>;
 	#size-cells = <0>;
-	status = "okay";
 	pinctrl-0 = <&spim2_default>;
 	pinctrl-names = "default";
-	clock-frequency = <20000000>;
+	clock-frequency = <40000000>;
+	dma-enabled;
 	cs-gpios = <&gpio0 3 GPIO_ACTIVE_LOW>, /* LCD     */
 		   <&gpio0 4 GPIO_ACTIVE_LOW>; /* TF-CARD */