屏参：
panel: panel {
compatible = "simple-panel";
backlight = <&backlight>;
power-supply = <&vcc_lcd>;
enable-gpios = <&gpio3 16 GPIO_ACTIVE_LOW>;
reset-gpios = <&gpio1 4 GPIO_ACTIVE_HIGH>;
prepare-delay-ms = <200>;
enable-delay-ms = <20>;
display-timings {
native-mode = <&timing0>;
timing0: timing0 {
clock-frequency = <238000000>;
hactive = <2560>;
vactive = <1440>;
hfront-porch = <108>;
hsync-len = <38>;
hback-porch = <40>;
vfront-porch = <12>;
vsync-len = <4>;
vback-porch = <4>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <0>;
pixelclk-active = <0>;
};
};
休眠唤醒花屏 log报如下错误：
<4>[ 900.438765] panel_simple_unprepare enable_gpio= 0
<6>[ 900.621094] rockchip-vop ff900000.vop: [drm:vop_crtc_enable] Update mode to 2560x1440p59, type: 14
<4>[ 900.621609] panel_simple_prepare enable_gpio= 1
<3>[ 900.657091] rockchip-dp ff970000.edp: AUX CH command reply failed!
<3>[ 900.657582] rockchip-dp ff970000.edp: Rx Max Link Rate is abnormal :c0 !
<3>[ 900.657828] rockchip-dp ff970000.edp: Rx Max Lane count is abnormal :0 !
<3>[ 900.660663] rockchip-dp ff970000.edp: AUX CH command reply failed!
<3>[ 900.660728] rockchip-dp ff970000.edp: LT link start failed!
<3>[ 900.660740] rockchip-dp ff970000.edp: eDP link training failed (-110)
<6>[ 900.681445] rockchip-dp ff970000.edp: Link Training success!要求屏端的供电比aux早，可以尝试加长prepare-delay时间到200ms。