boards: stm32n6570_dk: Add touch screen support

Configure touch screen on stm32n6570_dk.

Signed-off-by: Erwan Gouriou <erwan.gouriou@st.com>

Author: erwango

boards/st/stm32n6570_dk/Kconfig.defconfig

@@ -14,6 +14,12 @@ endif # NETWORKING
 
 if DISPLAY
 
+config INPUT
+	default y
+
+config I2C_STM32_V2_TIMING
+	default y if INPUT
+
 # MEMC needs to be enabled in order to store
 # display frame buffer to external PSRAM
 config MEMC

boards/st/stm32n6570_dk/stm32n6570_dk_common.dtsi

@@ -19,13 +19,21 @@
 		zephyr,sram = &axisram2;
 		zephyr,canbus = &fdcan1;
 		zephyr,display = &ltdc;
+		zephyr,touch = &gt911;
 		spi-flash0 = &mx66uw1g45g;
 	};
 
 	aliases {
 		led0 = &green_led_1;
 	};
 
+	lvgl_pointer {
+		compatible = "zephyr,lvgl-pointer-input";
+		input = <&gt911>;
+		display = <&ltdc>;
+		invert-y;
+	};
+
 	psram: memory@90000000 {
 		compatible = "zephyr,memory-region";
 		reg = <0x90000000 DT_SIZE_M(32)>;
@@ -48,6 +56,21 @@
 	};
 };
 
+&i2c2 {
+	status = "okay";
+	clocks = <&rcc STM32_CLOCK(APB1, 22)>,
+		 <&rcc STM32_SRC_CKPER I2C2_SEL(1)>;
+	pinctrl-0 = <&i2c2_scl_pd14 &i2c2_sda_pd4>;
+	pinctrl-names = "default";
+	clock-frequency = <I2C_BITRATE_FAST>;
+
+	gt911: gt911@5d {
+		compatible = "goodix,gt911";
+		reg = <0x5d>;
+		reset-gpios = <&gpioe 4 GPIO_ACTIVE_LOW>;
+	};
+};
+
 &clk_hse {
 	hse-div2;
 	clock-frequency = <DT_FREQ_M(48)>;