Created
September 1, 2024 21:56
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Overlay file for ili9341 touchscreen module
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| /dts-v1/; | |
| /plugin/; | |
| / { | |
| compatible = "allwinner,sun8i-h3"; | |
| fragment@0 { | |
| target = <&pio>; | |
| __overlay__ { | |
| spi0_cs1: spi0_cs1 { | |
| pins = "PC3"; /* CS */ | |
| function = "gpio_out"; | |
| output-high; | |
| }; | |
| spi1_cs1: spi1_cs1 { | |
| pins = "PA3"; /* T_CS */ | |
| function = "gpio_out"; | |
| output-high; | |
| }; | |
| spi_tft_display_pins: spi_tft_display_pins { | |
| pins = "PA1", "PG8", "PA2"; /* DC, RST, LED */ | |
| function = "gpio_out"; | |
| }; | |
| spi_tft_touch_pins: spi_tft_touch_pins { | |
| pins = "PG9"; /* T_IRQ */ | |
| function = "irq"; | |
| }; | |
| }; | |
| }; | |
| fragment@1 { | |
| target = <&spi0>; | |
| __overlay__ { | |
| #address-cells = <1>; | |
| #size-cells = <0>; | |
| status = "okay"; | |
| pinctrl-names = "default", "default"; | |
| cs-gpios= <&pio 2 3 0>, <&pio 0 3 1>; | |
| spi_tft_display: spi_tft_display@0 { | |
| pinctrl-1 = <&spi0_cs1>; | |
| reg = <0>; /* Chip Select 0 */ | |
| compatible = "ilitek,ili9341"; | |
| spi-max-frequency = <64000000>; | |
| status = "okay"; | |
| pinctrl-names = "default"; | |
| pinctrl-0 = <&spi_tft_display_pins>; | |
| rotate = <90>; | |
| fps = <60>; | |
| buswidth = <8>; | |
| dc-gpios = <&pio 0 1 0>; /* PA1 */ | |
| reset-gpios = <&pio 6 8 1 >; /* PG8 */ | |
| led-gpios=<&pio 0 2 0>; /* PA2 */ | |
| debug=<4>; | |
| }; | |
| spi_tft_touch: spi_tft_touch@1 { | |
| reg = <1>; /* Chip Select 1 */ | |
| compatible = "ti,ads7846"; /* xptek,xpt2046 */ | |
| spi-max-frequency = <2000000>; | |
| pinctrl-names = "default"; | |
| status = "okay"; | |
| pinctrl-2=<&spi1_cs1 &spi1_cs1>; | |
| pinctrl-3 = <&spi_tft_touch_pins>; | |
| interrupt-parent = <&pio>; | |
| interrupts = <6 9 2>; /* PG9 IRQ_TYPE_EDGE_FALLING */ | |
| pendown-gpio = <&pio 6 9 0>; /* PG9 */ | |
| /* driver defaults, optional | |
| ti,x-min = /bits/ 16 <0>; | |
| ti,y-min = /bits/ 16 <0>; | |
| ti,x-max = /bits/ 16 <0x0FFF>; | |
| ti,y-max = /bits/ 16 <0x0FFF>; | |
| ti,pressure-min = /bits/ 16 <0>; | |
| ti,pressure-max = /bits/ 16 <0xFFFF>; | |
| ti,x-plate-ohms = /bits/ 16 <400>; */ | |
| }; | |
| }; | |
| }; | |
| fragment@2 { | |
| target = <&spi1>; | |
| __overlay__ { | |
| pinctrl-names = "default", "default"; | |
| pinctrl-1 = <&spi1_cs1>; | |
| cs-gpios = <0>, <&pio 0 3 0>; /* PA3 */ | |
| }; | |
| }; | |
| }; |
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