/dts-v1/; #include #include #include #include #include #include #include #include #include #include #include #include // Reference: https://www.waveshare.com/wiki/ESP32-S3-Touch-LCD-1.28 / { compatible = "root"; model = "Waveshare S3 Touch LCD 1.28"; wifi0 { compatible = "espressif,esp32-wifi-pinned"; status = "disabled"; }; ble0 { compatible = "espressif,esp32-ble"; status = "disabled"; }; gpio0 { compatible = "espressif,esp32-gpio"; gpio-count = <49>; }; i2c0 { compatible = "espressif,esp32-i2c"; port = ; clock-frequency = <400000>; pin-sda = <&gpio0 6 GPIO_FLAG_NONE>; pin-scl = <&gpio0 7 GPIO_FLAG_NONE>; qmi8658 { compatible = "qst,qmi8658"; reg = <0x6B>; }; touch0 { compatible = "hynitron,cst816t"; reg = <0x15>; x-max = <240>; y-max = <240>; mirror-x; mirror-y; pin-reset = <&gpio0 13 GPIO_FLAG_NONE>; pin-interrupt = <&gpio0 5 GPIO_FLAG_NONE>; }; }; display_backlight_pwm { compatible = "espressif,esp32-pwm-ledc"; pin = <&gpio0 2 GPIO_FLAG_NONE>; period-ns = <3906250>; ledc-timer = <0>; ledc-channel = <0>; }; display_backlight { compatible = "pwm-backlight"; // Off by default so display power-on won't show the screen from before the last power loss. // The display backlight is turned on during the boot process. status = "disabled"; pwm = <&display_backlight_pwm>; }; spi0 { compatible = "espressif,esp32-spi"; host = ; cs-gpios = <&gpio0 9 GPIO_FLAG_NONE>; pin-mosi = <&gpio0 11 GPIO_FLAG_NONE>; pin-miso = <&gpio0 12 GPIO_FLAG_NONE>; pin-sclk = <&gpio0 10 GPIO_FLAG_NONE>; display@0 { compatible = "galaxycore,gc9a01"; horizontal-resolution = <240>; vertical-resolution = <240>; mirror-y; invert-color; bgr-order; pin-dc = <&gpio0 8 GPIO_FLAG_NONE>; pin-reset = <&gpio0 14 GPIO_FLAG_NONE>; backlight = <&display_backlight>; }; }; };