4.2pmu_io_domains配置

4.2.1硬件原理分析

通过查阅电路原理图，可以得出下表

4.2.2dts配置

&pmu_io_domains {
    status = "okay";
    pmuio2-supply = <&vcc3v3_pmu>;
    vccio1-supply = <&vccio_acodec>;
    vccio3-supply = <&vccio_sd>;
    vccio4-supply = <&vcc_1v8>;
    vccio5-supply = <&vcc_3v3>;
    vccio6-supply = <&vcc_3v3>;
    vccio7-supply = <&vcc_3v3>;
};