BB-SPI1DEV-00A0.dts

/*
 * Copyright (C) 2013 CircuitCo
 *
 * Virtual cape for SPI1 on connector pins P9.29 P9.31 P9.30 P9.28
 * Modified to enable /dev/spidev2.0 by Carl Johnson
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
/dts-v1/;
/plugin/;

/ {
    compatible = "ti,beaglebone", "ti,beaglebone-black";

    /* identification */
    part-number = "BB-SPI1DEV";
    version = "00A0";

    /* state the resources this cape uses */
    exclusive-use =
        /* the pin header uses */
        "P9.31",    /* spi1_sclk */
        "P9.29",    /* spi1_d0 */
        "P9.30",    /* spi1_d1 */
        "P9.28",    /* spi1_cs0 */
        /* the hardware ip uses */
        "spi1";

    fragment@0 {
        target = <&am33xx_pinmux>;
        __overlay__ {
            bb_spi1_pins: pinmux_bb_spi1_pins {
                pinctrl-single,pins = <
                    0x190 0x33  /* mcasp0_aclkx.spi1_sclk, INPUT_PULLUP | MODE3 */
                    0x194 0x33  /* mcasp0_fsx.spi1_d0, INPUT_PULLUP | MODE3 */
                    0x198 0x13  /* mcasp0_axr0.spi1_d1, OUTPUT_PULLUP | MODE3 */
                    0x19c 0x13  /* mcasp0_ahclkr.spi1_cs0, OUTPUT_PULLUP | MODE3 */
                >;
            };
        };
    };

    fragment@1 {
        target = <&spi1>;   /* spi1 is numbered correctly */
        __overlay__ {
            status = "okay";
            pinctrl-names = "default";
            pinctrl-0 = <&bb_spi1_pins>;
            #address-cells = <1>;
            #size-cells = <0>;
            spidev@1 {
                #address-cells = <1>;
                #size-cells = <0>;
                spi-max-frequency = <24000000>;
                reg = <0>;
                compatible = "linux,spidev";
            };
        };
    };
};