PX30 Android8.1 噪声问题解决

由于电压供应不对引起
microvolt = <3300000>;改为microvolt = <3000000>;后噪声消除了！

原始电压：

vcc3v0_pmu: LDO_REG4 {
	regulator-always-on;
	regulator-boot-on;
	regulator-min-microvolt = <3000000>;
	regulator-max-microvolt = <3000000>;
	regulator-name = "vcc3v0_pmu";
	regulator-state-mem {
		regulator-on-in-suspend;
		regulator-suspend-microvolt = <3000000>;

	};
};

修改后的电压：

	vcc3v0_pmu: LDO_REG4 {
	regulator-always-on;
	regulator-boot-on;
	regulator-min-microvolt = <3300000>;
	regulator-max-microvolt = <3300000>;
	regulator-name = "vcc3v0_pmu";
    regulator-state-mem {
		regulator-on-in-suspend;
		regulator-suspend-microvolt = <3300000>;

	};
};