用于Beaglebone Black Deb 10.3的简单GPIO设备树示例

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用于Beaglebone Black Deb 10.3的简单GPIO设备树示例

/* dtc -O dtb -o BB-P8_13-LED.dtbo -b 0 -@ BB-P8_13-LED-00A0.dts */
/dts-v1/;
/plugin/;
    compatible = "ti,beaglebone-black";
        /* identification */
        part-number = "BB-P8_13-LED";
        version = "00A0";
        /* state the resources this cape uses */
        exclusive-use =
                /* the pin header uses */
                "P8.13",    /* GPIO_23 */
                /* the hardware ip uses */
                "gpio23";
        fragment@0 {
            target = <&am33xx_pinmux>;
            __overlay__ {
                bb_gpio23_pin: pinmux_bb_gpio23_pin {
                    pinctrl-single,pins = < 0x024 0x07 >; /*P8_13 GPIO23 MODE7*/
        fragment@1 {
                target = <&gpio23>;
                __overlay__ {
                    leds {
                        status = "okay";
                        pinctrl-names = "default";
                        pinctrl-0 = <&bb_gpio23_pin>;
                        compatible = "gpio-leds";
                        P8_13 {
                            label = "P8_13";
                            default-state = "on";
};

###Additional custom capes
uboot_overlay_addr4=/lib/firmware/BB-P8_13-LED-00A0.dtbo

/* dtc -O dtb -o BB-P8_13-LED-00A0.dtbo -b 0 -@ BB-P8_13-LED-00A0.dts */
/dts-v1/;
/plugin/;
       compatible = "ti,beaglebone-black";
       part-number = "BB-P8_13-LED";
       version = "00A0";
       fragment@0 {
             target = <&am33xx_pinmux>;
             __overlay__ {
                  pinctrl_test: BB-P8_13-LED {
            pinctrl-single,pins = <
                0x024 0x27  /* P8_13 9 PULLUP ENABLED OUTPUT MODE7 - The LED Output */
       fragment@1 {
        target = <&ocp>;
        __overlay__ {
            test_helper: helper {
                compatible = "bone-pinmux-helper";
                pinctrl-names = "default";

用于Beaglebone Black Deb 10.3的简单GPIO设备树示例

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