zedboard——adau1761新工程的设备树修改（二）

本文将介绍下对工程自动生成的设备树进行修改，加入adau1761设备相关的节点信息。
在上一篇文章中，加载hdf文件后，使用petalinux-config指令后，会自动生成设备树文件，共如下图中6个设备树文件。设备树的知识总结见：https://www.cnblogs.com/tureno/articles/6399782.html

（1）skeleton.dtsi

/*
 * Skeleton device tree; the bare minimum needed to boot; just include and
 * add a compatible value.  The bootloader will typically populate the memory
 * node.
 */

/ {
    #address-cells = <1>;
    #size-cells = <1>;
    chosen { };
    aliases { };
    memory { device_type = "memory"; reg = <0 0>; };
};

（2）zynq-7000.dtsi

/*
 *  Copyright (C) 2011 - 2014 Xilinx
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */
/include/ "skeleton.dtsi"

/ {
    compatible = "xlnx,zynq-7000";

    cpus {
        #address-cells = <1>;
        #size-cells = <0>;

        cpu@0 {
            compatible = "arm,cortex-a9";
            device_type = "cpu";
            reg = <0>;
            clocks = <&clkc 3>;
            clock-latency = <1000>;
            cpu0-supply = <&regulator_vccpint>;
            operating-points = <
                /* kHz    uV */
                666667  1000000
                333334  1000000
            >;
        };

        cpu@1 {
            compatible = "arm,cortex-a9";
            device_type = "cpu";
            reg = <1>;
            clocks = <&clkc 3>;
        };
    };

    pmu {
        compatible = "arm,cortex-a9-pmu";
        interrupts = <0 5 4>, <0 6 4>;
        interrupt-parent = <&intc>;
        reg = < 0xf8891000 0x1000 0xf8893000 0x1000 >;
    };

    regulator_vccpint: fixedregulator@0 {
        compatible = "regulator-fixed";
        regulator-name = "VCCPINT";
        regulator-min-microvolt = <1000000>;
        regulator-max-microvolt = <1000000>;
        regulator-boot-on;
        regulator-always-on;
    };

    amba: amba {
        compatible = "simple-bus";
        #address-cells = <1>;
        #size-cells = <1>;
        interrupt-parent = <&intc>;
        ranges;

        adc: adc@f8007100 {
            compatible = "xlnx,zynq-xadc-1.00.a";
            reg = <0xf8007100 0x20>;
            interrupts = <0 7 4>;
            interrupt-parent = <&intc>;
            clocks = <&clkc 12>;
        };

        can0: can@e0008000 {
            compatible = "xlnx,zynq-can-1.0";
            status = "disabled";
            clocks = <&clkc 19>, <&clkc 36>;
            clock-names = "can_clk", "pclk";
            reg = <0xe0008000 0x1000>;
            interrupts = <0 28 4>;
            interrupt-parent = <&intc>;
            tx-fifo-depth = <0x40>;
            rx-fifo-depth = <0x40>;
        };

        can1: can@e0009000 {
            compatible = "xlnx,zynq-can-1.0";
            status = "disabled";
            clocks = <&clkc 20>, <&clkc 37>;
            clock-names = "can_clk", "pclk";
            reg = <0xe0009000 0x1000>;
            interrupts = <0 51 4>;
            interrupt-parent = <&intc>;
            tx-fifo-depth = <0x40>;
            rx-fifo-depth = <0x40>;
        };

        gpio0: gpio@e000a000 {
            compatible = "xlnx,zynq-gpio-1.0";
            #gpio-cells = <2>;
            clocks = <&clkc 42>;
            gpio-controller;
            interrupt-parent = <&intc>;
            interrupts = <0 20 4>;
            reg = <0xe000a000 0x1000>;
        };

        i2c0: i2c@e0004000 {
            compatible = "cdns,i2c-r1p10";
            status = "disabled";
            clocks = <&clkc 38>;
            interrupt-parent = <&intc>;
            interrupts = <0 25 4>;
            reg = <0xe0004000 0x1000>;
            #address-cells = <1>;
            #size-cells = <0>;
        };

        i2c1: i2c@e0005000 {
            compatible = "cdns,i2c-r1p10";
            status = "disabled";
            clocks = <&clkc 39>;
            interrupt-parent = <&intc>;
            interrupts = <0 48 4>;
            reg = <0xe0005000 0x1000>;
            #address-cells = <1>;
            #size-cells = <0>;
        };

        intc: interrupt-controller@f8f01000 {
            compatible = "arm,cortex-a9-gic";
            #interrupt-cells = <3>;
            interrupt-controller;
            reg = <0xF8F01000 0x1000>,
                  <0xF8F00100 0x100>;
        };

        L2: cache-controller@f8f02000 {
            compatible = "arm,pl310-cache";
            reg = <0xF8F02000 0x1000>;
            interrupts = <0 2 4