问题描述:有时候操作屏幕界面,发现屏幕有抖动的情况。
经跟RK原厂沟通,此问题跟给ddr供电的vdd_logic有关系。vdd_logic默认定义:
vdd_logic: DCDC_REG1 {regulator-always-on;regulator-boot-on;regulator-min-microvolt = <500000>;regulator-max-microvolt = <1350000>;regulator-init-microvolt = <900000>;regulator-ramp-delay = <6001>;regulator-initial-mode = <0x2>;regulator-name = "vdd_logic";regulator-state-mem {regulator-off-in-suspend;};};
需要把最小电压regulator-min-microvolt抬高一些: