LCD驱动

EDP(LP079QX1)

LP079QX1时序如下图

lcd panel在dts中的描述

panel: panel {
	compatible = "simple-panel";
	backlight = <&backlight>;
	power-supply = <&vcc_lcd>;
	enable-gpios = <&gpio1 13 GPIO_ACTIVE_HIGH>;
	prepare-delay-ms = <20>;
	enable-delay-ms = <20>;

	display-timings {
		native-mode = <&timing0>;

		timing0: timing0 {
			clock-frequency = <200000000>;
			hactive = <1536>;
			vactive = <2048>;
			hfront-porch = <12>;
			hsync-len = <16>;
			hback-porch = <48>;
			vfront-porch = <8>;
			vsync-len = <4>;
			vback-porch = <8>;
			hsync-active = <0>;
			vsync-active = <0>;
			de-active = <0>;
			pixelclk-active = <0>;
		};
	};

	ports {
		panel_in: endpoint {
			remote-endpoint = <&edp_out>;
		};
	};
};

背光配置

&backlight {
	status = "okay";
	enable-gpios = <&gpio4 29 GPIO_ACTIVE_HIGH>;
};

LCD电源配置

vcc_lcd: vcc-lcd {
	compatible = "regulator-fixed";
	regulator-name = "vcc_lcd";
	gpio = <&gpio4 30 GPIO_ACTIVE_HIGH>;
	startup-delay-us = <20000>;
	enable-active-high;
	regulator-min-microvolt = <3300000>;
	regulator-max-microvolt = <3300000>;
	regulator-boot-on;
	vin-supply = <&vcc5v0_sys>;
};

配置VOPB->eDP->Panel

配置VOPB->eDP

&edp_in_vopl {
	status = "disabled";
};

&edp_in_vopb {
	status = "okay";
};

&route_edp {
	connect = <&vopb_out_edp>;
	status = "okay";
};

配置eDP->Panel

&edp {
	status = "okay";
	force-hpd;

	ports {
		port@1 {
			reg = <1>;

			edp_out: endpoint {
				remote-endpoint = <&panel_in>;
			};
		};
	};
};

panel: panel {
	ports {
		panel_in: endpoint {
			remote-endpoint = <&edp_out>;
		};
	};
};

调试相关

查看当前显示信息

[root@rk3399:/]# cat /sys/kernel/debug/dri/0/summary
VOP [ff900000.vop]: ACTIVE
	Connector: eDP
		overlay_mode[0] bus_format[1009] output_mode[f] color_space[0]
	Display mode: 1536x2048p60
		clk[200000] real_clk[200000] type[0] flag[a]
		H: 1536 1548 1564 1612
		V: 2048 2056 2060 2068
	win0-0: ACTIVE
		format: AR24 little-endian (0x34325241) SDR[0] color_space[0]
		csc: y2r[0] r2r[0] r2y[0] csc mode[0]
		zpos: 0
		src: pos[0x0] rect[1536x2048]
		dst: pos[0x0] rect[1536x2048]
		buf[0]: addr: 0x0000000000cdd000 pitch: 6144 offset: 0
	win1-0: DISABLED
	win2-0: DISABLED
	win2-1: DISABLED
	win2-2: DISABLED
	win2-3: DISABLED
	win3-0: DISABLED
	win3-1: DISABLED
	win3-2: DISABLED
	win3-3: DISABLED
	post: sdr2hdr[0] hdr2sdr[0]
	pre : sdr2hdr[0]
	post CSC: r2y[0] y2r[0] CSC mode[1]
VOP [ff8f0000.vop]: DISABLED

2.5 KiB Raw Blame History

LCD驱动

EDP(LP079QX1)

配置VOPB->eDP->Panel

调试相关

2.5 KiB

Raw Blame History