Edit online

PSADC 配置

5 Dec 2024
Read time: 2 minute(s)

内核配置

  1. 配置 IIO

    在 Luban 根目录下执行 make menuconfig，进入配置，按如下选择：

    ArtInChip Luban SDK Configuration
    Linux kernel
        Advance setting
            Linux Kernel Tools
                <*>iio
  2. 配置 PSADC

    在 Luban 根目录下执行 make kernel-menuconfig，进入 kernel 的功能配置，按如下选择：

    Linux
    Device Drivers
        <*> Industrial I/O support
            Analog to digital converters
                <*> ArtInChip PSADC driver

DTS 参数配置

  1. D211 配置
    在 common/d211.dtsi 中的 PSADC 控制器定义：
    psadc: psadc@18210000 {
    compatible = "artinchip,aic-psadc-v1.0";
    reg = <0x0 0x18210000 0x0 0x1000>;
    interrupts-extended = <&plic0 28 IRQ_TYPE_LEVEL_HIGH>;
    clocks = <&cmu CLK_PSADC>, <&cmu CLK_APB0>;
    clock-names = "psadc", "pclk";
    resets = <&rst RESET_PSADC>;
    #io-channel-cells = <1>;
    status = "disabled";
};
  2. Board 配置
    xxx/board.dts 中的参数配置需要区分通道号，每个通道可以单独使能。使能的通道，需要指定该通道用到的 GPIO 配置，如下面的 psadc5_pins：
    &psadc {
    status = "okay";
    pinctrl-names = "default";
    pinctrl-0 = <&psadc5_pins>;

    psadc0 {
        status = "disabled";
    };

    psadc1 {
        status = "disabled";
    };

    psadc2 {
        status = "disabled";
    };

    psadc3 {
        status = "disabled";
    };

    psadc4 {
        status = "disabled";
    };

    psadc5 {
        status = "disabled";
    };

    psadc6 {
        status = "okay";
    };

    psadc7 {
        status = "disabled";
    };

    psadc8 {
        status = "disabled";
    };

    psadc9 {
        status = "disabled";
    };

    psadc10 {
        status = "disabled";
    };

    psadc11 {
        status = "disabled";
    };
};