AMOLED display DSI

[maximilian fletkar]

Hello everyone.

I want to try to connect a custom AMOLED DSI display with orangepi 3b  https://www.phoenixdisplay.com/product/color-displays/oled/at043qhd3008/ 

And there is practically no information. Maybe someone has seen or encountered similar problems?

 

Do I understand correctly that the dts section on brightness adjustment does not need to be written, because AMOLED as such does not have a backlight?

Is it possible to run such a display using simple-panel-dsi?

Another interesting question is how to organize the power supply for such a display? It needs different voltages from 1.8 to 4.6 V

[maximilian fletkar]

Hello everyone I found information that my display works on the driver from sitronix-st7701 I added it to the kernel, rebuilt the kernel and updated (except for the headers) after that I changed dts but there is no reaction. The maximum effect is that an error appears:

dw-mipi-dsi-rockchip fe060000.dsi: [drm:dw_mipi_dsi_rockchip_probe] *ERROR* failed to get mipi dphy: -517

It seems I have a problem with how to correctly use ports, endpoints and remote-endpoints. I am currently using fragments

port { dsi1_out_port: endpoint { remote-endpoint = <&panel_dsi_in>; }; };

and

 port { panel_dsi_in: endpoint { remote-endpoint = <&dsi1_out_port>; }; };

but I don't think they are correct. and I also don't see a link in

/sys/firmware/devicetree/base/symbols

to the new driver and I can't understand if this is correct or not?

 

/dts-v1/;
/plugin/;

/ {
    fragment@0 {
        target = <&dsi1>;

        __overlay__ {
            status = "okay";

            #address-cells = <1>;
            #size-cells = <0>;

            port {
                dsi1_out_port: endpoint {
                    remote-endpoint = <&panel_dsi_in>;
                };
            };

            panel_test: panel@0 {
                compatible = "sitronix, st7701";
                reg = <0x0>;
                status = "okay";
                label = "test_display";
				VCC-supply = <&vcc_3v3>;
	            IOVCC-supply = <&vcc_3v3>;
	            reset-gpios = <&gpio1 24 0>; 
				// prepare-delay-ms = <2>;
		        // reset-delay-ms = <1>;
		        // init-delay-ms = <20>;
		        // enable-delay-ms = <120>;
		        // disable-delay-ms = <50>;
		        // unprepare-delay-ms = <20>;
		        // dsi,flags = <(MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
			     //             MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_EOT_PACKET)>;
		        // dsi,format = <MIPI_DSI_FMT_RGB888>;
				// dsi,lanes = <2>;

            panel-init-sequence = [
			39 00 06 ff 77 01 00 00 13
			39 00 02 ef 08
			39 00 06 ff 77 01 00 00 10
			39 00 03 c0 63 00
			39 00 03 c1 10 02
			39 00 03 c2 31 02
			39 00 02 cc 10
			39 00 11 b0 c0 0c 92 0c 10 05 02 0d 07 21 04 53 11 6a 32 1f
			39 00 11 b1 c0 87 cf 0c 10 06 00 03 08 1d 06 54 12 e6 ec 0f
			39 00 06 ff 77 01 00 00 11
			39 00 02 b0 5d
			39 00 02 b1 62
			39 00 02 b2 82
			39 00 02 b3 80
			39 00 02 b5 42
			39 00 02 b7 85
			39 00 02 b8 20
			39 00 02 c0 09
			39 00 02 c1 78
			39 00 02 c2 78
			39 00 02 d0 88
			39 ff 02 ee 42
			39 00 04 e0 00 00 02
			39 00 0c e1 04 a0 06 a0 05 a0 07 a0 00 44 44
			39 00 0d e2 00 00 33 33 01 a0 00 00 01 a0 00 00
			39 00 05 e3 00 00 33 33
			39 00 03 e4 44 44
			39 00 11 e5 0c 30 a0 a0 0e 32 a0 a0 08 2c a0 a0 0a 2e a0 a0
			39 00 05 e6 00 00 33 33
			39 00 03 e7 44 44
			39 00 11 e8 0d 31 a0 a0 0f 33 a0 a0 09 2d a0 a0 0b 2f a0 a0
			39 00 08 eb 00 01 e4 e4 44 88 00
			39 00 11 ed ff f5 47 6f 0b a1 a2 bf fb 2a 1a b0 f6 74 5f ff
			39 00 07 ef 08 08 08 40 3f 64
			39 00 06 ff 77 01 00 00 13
			39 00 03 e8 00 0e
			39 00 06 ff 77 01 00 00 00
			39 ff 01 11
			39 00 06 ff 77 01 00 00 13
			39 ff 03 e8 00 0c
			39 00 03 e8 00 00
			39 00 06 ff 77 01 00 00 00
			39 00 02 3a 50
			39 ff 01 29
		               ];

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

                    timing0: timing-0 {
                        clock-frequency = <30000000>;
                        hactive = <540>;
                        vactive = <960>;
                        hfront-porch = <20>;
                        hback-porch = <20>;
                        hsync-len = <20>;
                        vfront-porch = <20>;
                        vback-porch = <20>;
                        vsync-len = <20>;
                    };
                };

                port {
                    panel_dsi_in: endpoint {
                        remote-endpoint = <&dsi1_out_port>;
                    };
                };
            };
        };
    };

	 fragment@1 {
		target = <0xffffffff>;

		__overlay__ {
			status = "okay";
		};
	 };

	fragment@2 {
		target = <0xffffffff>;

		__overlay__ {
			status = "okay";
		};
	};

	fragment@3 {
		target = <0xffffffff>;

		__overlay__ {
			status = "okay";
		};
	};

	fragment@4 {
		target = <0xffffffff>;

		__overlay__ {
			status = "okay";
		};
	};

	fragment@5 {
		target = <0xffffffff>;

		__overlay__ {
			status = "disabled";
		};
	};

	__fixups__ {
		video_phy1 = "/fragment@1:target:0";
		dsi1_in_vp0 = "/fragment@2:target:0";
		dsi1_in_vp1 = "/fragment@3:target:0";
		route_dsi1 = "/fragment@4:target:0";
		hdmi = "/fragment@5:target:0";
	};
	
	
};