board: st: stm32u5g9j-dk2: Add touchscreen driver

Use GT911 touchscreen driver on STM32U5G9J-DK2

Signed-off-by: Mathias Markussen <[email protected]>

Author: markussmST

boards/st/stm32u5g9j_dk2/doc/index.rst

@@ -53,7 +53,7 @@ Default Zephyr Peripheral Mapping:
 - LD3 : PD4
 - User Button: PC13
 - I2C1 SCL/SDA : PG14/PG13
-- I2C2 SCL/SDA : PB10/PB11
+- I2C2 SCL/SDA : PF1/PF0
 - SPI1 SCK/MISO/MOSI/CS : PA5/PA6/PB5/PA3
 - ADC1 : channel5 PA0, channel12 PA7
 - ADC4 : channel4 PC3

boards/st/stm32u5g9j_dk2/stm32u5g9j_dk2.dts

@@ -21,6 +21,7 @@
 		zephyr,flash = &flash0;
 		zephyr,code-partition = &slot0_partition;
 		zephyr,display = &ltdc;
+		zephyr,touch = &gt911;
 	};
 
 	leds {
@@ -175,10 +176,17 @@
 };
 
 &i2c2 {
-	pinctrl-0 = <&i2c2_scl_pb10 &i2c2_sda_pb11>;
 	pinctrl-names = "default";
+	pinctrl-0 = <&i2c2_scl_pf1 &i2c2_sda_pf0>;
 	status = "okay";
-	clock-frequency = <I2C_BITRATE_STANDARD>;
+	clock-frequency = <I2C_BITRATE_FAST>;
+
+	gt911: gt911@5d {
+		compatible = "goodix,gt911";
+		reg = <0x5d>;
+		irq-gpios = <&gpioe 5 GPIO_ACTIVE_HIGH>;
+		reset-gpios = <&gpiod 2 GPIO_ACTIVE_LOW>;
+	};
 };
 
 &spi1 {