81 lines
No EOL
1.5 KiB
Text
81 lines
No EOL
1.5 KiB
Text
/*
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* Device Tree overlay for the STMPE resistive
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* touch screen controller on the Adafruit PiTFT
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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", "brcm,bcm2708", "brcm,bcm2709";
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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 = <&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@2 {
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target = <&gpio>;
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__overlay__ {
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pitft_pins: pitft_pins {
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brcm,pins = <24>;
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brcm,function = <0>; /* in out */
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brcm,pull = <2>; /* pullup none */
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};
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};
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};
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fragment@3 {
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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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pitft: pitft_ts@1 {
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compatible = "st,stmpe610";
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reg = <1>;
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pinctrl-names = "default";
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pinctrl-0 = <&pitft_pins>;
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spi-max-frequency = <500000>;
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irq-gpio = <&gpio 24 0x2>; /* IRQF_TRIGGER_FALLING */
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interrupts = <24 2>; /* high-to-low edge triggered */
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interrupt-parent = <&gpio>;
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interrupt-controller;
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stmpe_touchscreen {
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compatible = "st,stmpe-ts";
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st,sample-time = <4>;
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st,mod-12b = <1>;
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st,ref-sel = <0>;
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st,adc-freq = <2>;
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st,ave-ctrl = <3>;
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st,touch-det-delay = <4>;
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st,settling = <2>;
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st,fraction-z = <7>;
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st,i-drive = <0>;
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};
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stmpe_gpio: stmpe_gpio {
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#gpio-cells = <2>;
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compatible = "st,stmpe-gpio";
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/*
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* only GPIO2 is wired/available
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* and it is wired to the backlight
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*/
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st,norequest-mask = <0x7b>;
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};
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};
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};
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};
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}; |