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94 lines
1.7 KiB
Plaintext
94 lines
1.7 KiB
Plaintext
/*
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* Device Tree overlay for HY28A display
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*
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*/
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/dts-v1/;
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/plugin/;
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/ {
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compatible = "brcm,bcm2835";
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fragment@0 {
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target = <&spi0>;
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__overlay__ {
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status = "okay";
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};
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};
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fragment@1 {
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target = <&spidev0>;
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__overlay__ {
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status = "disabled";
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};
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};
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fragment@2 {
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target = <&spidev1>;
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__overlay__ {
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status = "disabled";
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};
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};
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fragment@3 {
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target = <&gpio>;
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__overlay__ {
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hy28a_pins: hy28a_pins {
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brcm,pins = <17 25 18>;
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brcm,function = <0 1 1>; /* in out out */
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};
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};
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};
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fragment@4 {
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target = <&spi0>;
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__overlay__ {
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/* needed to avoid dtc warning */
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#address-cells = <1>;
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#size-cells = <0>;
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hy28a: hy28a@0{
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compatible = "ilitek,ili9320";
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reg = <0>;
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pinctrl-names = "default";
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pinctrl-0 = <&hy28a_pins>;
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spi-max-frequency = <32000000>;
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spi-cpol;
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spi-cpha;
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rotate = <270>;
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bgr;
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fps = <50>;
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buswidth = <8>;
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startbyte = <0x70>;
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reset-gpios = <&gpio 25 1>;
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led-gpios = <&gpio 18 1>;
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debug = <0>;
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};
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hy28a_ts: hy28a-ts@1 {
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compatible = "ti,ads7846";
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reg = <1>;
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spi-max-frequency = <2000000>;
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interrupts = <17 2>; /* high-to-low edge triggered */
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interrupt-parent = <&gpio>;
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pendown-gpio = <&gpio 17 0>;
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ti,x-plate-ohms = /bits/ 16 <100>;
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ti,pressure-max = /bits/ 16 <255>;
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};
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};
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};
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__overrides__ {
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speed = <&hy28a>,"spi-max-frequency:0";
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rotate = <&hy28a>,"rotate:0";
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fps = <&hy28a>,"fps:0";
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debug = <&hy28a>,"debug:0";
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xohms = <&hy28a_ts>,"ti,x-plate-ohms;0";
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resetgpio = <&hy28a>,"reset-gpios:4",
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<&hy28a_pins>, "brcm,pins:4";
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ledgpio = <&hy28a>,"led-gpios:4",
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<&hy28a_pins>, "brcm,pins:8";
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};
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};
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