spidev.dts

/dts-v1/;
/plugin/;

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

    /* identification */
    part-number = "BB-SPI1-01";

    /* version */
    version = "00A0";

    /* state the resources this cape uses */
    exclusive-use =
        /* the pin header uses */
        "P9.31",
        "P9.29",
        "P9.30",
        "P9.28",
        "P9.13",
        "P9.12",
        "spi1";

    fragment@0 {
        target = <&am33xx_pinmux>;
        __overlay__ {
            pinctrl_spi1: pinctrl_spi1_pins {
                pinctrl-single,pins = <
                    0x190 0x13    /* P9_31 = mcasp0_aclkx.spi1_sclk                 , OUTPUT_PULLUP | MODE3 */
                    0x194 0x33    /* P9_29 = mcasp0_fsx.spi1_d0                     , INPUT_PULLUP  | MODE3 */
                    0x198 0x13    /* P9_30 = mcasp0_axr0.spi1_d1                     , OUTPUT_PULLUP | MODE3 */
                    0x19c 0x13    /* P9_28 = mcasp0_ahclkr.spi1_cs0                 , OUTPUT_PULLUP | MODE3 */
                    0x164 0x12  /* P9_42 = GPIO0_7 =  eCAP0_in_PWM0_out.gpio0[7] , OUTPUT_PULLUP | MODE2 */
                >;
            };
        };
    };

    fragment@1 {
        target = <&spi1>;
        __overlay__ {
            #address-cells     = <1>;
            #size-cells     = <0>;
            status            = "okay";
            pinctrl-names    = "default";
            pinctrl-0        = <&pinctrl_spi1>;
            cs-gpios         = <&gpio4 17 0>, <&gpio1 7 0>;

            spi1_0{
                #address-cells       = <1>;
                #size-cells       = <0>;
                compatible           = "spidev";
                reg               = <0>;
                spi-max-frequency = <16000000>;
                spi-cpha;
            };
            spi1_1{
                #address-cells       = <1>;
                #size-cells       = <0>;
                compatible           = "spidev";
                reg               = <1>;
                spi-max-frequency = <16000000>;
                // Mode 0 (CPOL = 0, CPHA = 0)
            };
        };
    };
};