rk3399点32寸HV320FHB LVDS出现花屏

user1302 · February 16, 2019, 2:26am

本帖最后由风在摇曳风铃于 2019-2-16 10:31 编辑

如果我点21.5寸屏不会花屏，但是点32寸的屏就出现花屏，调试了半天也查不出到底什么原因，也不知道如何调试。
dts源码如下：

&dsi {
enable-gpios = <&gpio4 30 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpio4 29 GPIO_ACTIVE_LOW>;
status = “okay”;
rockchip,lane-rate = <1000>;
panel@0 {
compatible =“simple-panel-dsi”;
reg = <0>;
backlight = <&backlight>;
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>;
//bus-format = <MEDIA_BUS_FMT_RGB888_1X24>;
dsi,lanes = <4>;
panel-init-sequence = [
29 00 06 3C 01 09 00 07 00
29 00 06 14 01 06 00 00 00
29 00 06 64 01 0B 00 00 00
29 00 06 68 01 0B 00 00 00
29 00 06 6C 01 0B 00 00 00
29 00 06 70 01 0B 00 00 00
29 00 06 34 01 1F 00 00 00
29 00 06 10 02 1F 00 00 00
29 00 06 04 01 01 00 00 00
29 00 06 04 02 01 00 00 00
29 00 06 50 04 20 01 F0 03
29 00 06 54 04 32 00 B4 00
29 00 06 58 04 80 07 48 00
29 00 06 5C 04 0A 00 19 00
29 00 06 60 04 38 04 0A 00
29 00 06 64 04 01 00 00 00
29 01 06 A0 04 06 80 44 00
29 00 06 A0 04 06 80 04 00
29 00 06 04 05 04 00 00 00
29 00 06 80 04 00 01 02 03
29 00 06 84 04 04 07 05 08
29 00 06 88 04 09 0A 0E 0F
29 00 06 8C 04 0B 0C 0D 10
29 00 06 90 04 16 17 11 12
29 00 06 94 04 13 14 15 1B
29 00 06 98 04 18 19 1A 06
29 02 06 9C 04 33 04 00 00
];

     panel-exit-sequence = [
         05 05 01 28
         05 78 01 10
     ];

    display-timings {
          native-mode = <&timing_32inch>;
          //native-mode = <&timing0>;
                      timing0: timing0 {
            /*21.5 inch ok*/
                            clock-frequency = <148500000>;
            hactive = <1920>;
            vactive = <1080>;
            hback-porch = <100>;
            hfront-porch = <160>;
            vback-porch = <25>;
            vfront-porch = <10>;
            hsync-len = <20>;
            vsync-len = <10>;
            hsync-active = <0>;
            vsync-active = <0>;
            de-active = <0>;
            pixelclk-active = <0>;
        };
                      timing_32inch: timing_32inch {

                            clock-frequency = <132975000>;
                            hactive = <1920>;
                            vactive = <1080>;
                            hback-porch = <40>;
                            hfront-porch = <5>;
                            vback-porch = <30>;
                            vfront-porch = <10>;
                            hsync-len = <5>;
                            vsync-len = <5>;
                            hsync-active = <1>;
                            vsync-active = <1>;
                            de-active = <0>;
                            pixelclk-active = <0>;
                    };

    };
  };

};

user1302 · February 19, 2019, 1:05am

屏为双8LVDS接口

user1302 · February 22, 2019, 2:10am

屏幕显示状态：

user1302 · February 22, 2019, 2:14am

能看出是什么原因导致的吗

leung · February 22, 2019, 2:53am

风在摇曳风铃发表于 2019-2-22 10:14
能看出是什么原因导致的吗

display-timings和panel-init-sequence需要一起配置

user1302 · February 22, 2019, 3:17am

最新屏参

user1302 · February 22, 2019, 3:19am

leung先森发表于 2019-2-22 10:53
display-timings和panel-init-sequence需要一起配置

现在已经修改一致了，还是出现问题。配置在下图

user1302 · February 25, 2019, 9:53am

这问题已经拖了很久了，有谁能帮忙看下？十分感谢！这是该屏的屏参

rockhard · May 7, 2020, 10:25am

一样的屏，一样的平台，用如下参数，以供其它人参考。
/*

Copyright (c) 2018 Fuzhou Rockchip Electronics Co., Ltd
SPDX-License-Identifier: (GPL-2.0+ OR MIT)
*/

/dts-v1/;
#include “rk3399-common.dtsi”

/ {

};

&dsi {
status = “okay”;
rockchip,lane-rate = <862>;

panel@0 {
	compatible = "simple-panel-dsi";
	reg = <0>;
	backlight = <&backlight>;
	reset-gpios = <&gpio2 6 GPIO_ACTIVE_LOW>;
	enable-gpios = <&gpio1 13 GPIO_ACTIVE_LOW>;

	reset-delay-ms = <160>;
	enable-delay-ms = <160>;
	prepare-delay-ms = <160>;
	unprepare-delay-ms = <160>;
	disable-delay-ms = <160>;
	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 = <4>;

	status = "okay";
	panel-init-sequence = [
		29 00 06 14 01 08 00 00 00
		29 00 06 3c 01 0c 00 0a 00
		29 00 06 64 01 0c 00 00 00
		29 00 06 68 01 0c 00 00 00
		29 00 06 6c 01 0c 00 00 00
		29 00 06 70 01 0c 00 00 00
		29 00 06 34 01 1f 00 00 00
		29 00 06 10 02 1f 00 00 00
		29 00 06 04 01 01 00 00 00
		29 00 06 04 02 01 00 00 00
		29 00 06 50 04 00 01 f0 03
		29 00 06 54 04 14 00 64 00
		29 00 06 58 04 80 07 a0 00
		29 00 06 5c 04 0a 00 19 00
		29 00 06 60 04 38 04 0a 00
		29 00 06 64 04 01 00 00 00
		29 00 06 a0 04 06 c0 00 00
		29 00 06 04 05 04 00 00 00
		29 00 06 80 04 00 01 02 03
		29 00 06 84 04 04 07 05 08
		29 00 06 88 04 09 0a 0e 0f
		29 00 06 8c 04 0b 0c 0d 10
		29 00 06 90 04 16 17 11 12
		29 00 06 94 04 13 14 15 1b
		29 14 06 98 04 18 19 1a 06
		29 78 06 9c 04 33 04 00 00
	];

	display-timings {
		native-mode = <&timing0>;
		timing0: timing0 {
			//32 inch screen
			clock-frequency = <123750000>;
			hactive = <1920>;
			vactive = <1080>;

			hback-porch = <100>;
			hsync-len = <20>;
			hfront-porch = <160>;
			vback-porch = <25>;
			vfront-porch = <10>;
			vsync-len = <10>;
			hsync-active = <0>;
			vsync-active = <0>;
			de-active = <0>;
			pixelclk-active = <0>;
		};
	};
};

};

&route_dsi {
status = “okay”;
logo,mode = “center”;
};

tzmwd19833 · June 15, 2021, 2:21am

大神，救命啊，我们也遇到了和您相同的问题，RK3399通过东芝775芯片点21寸屏没问题，点32寸京东方屏偶尔上电会上下抖，启动20次左右会出现一次抖屏，出现了就一直抖除非重启。想看下您最终的代码，如能解决问题，必有重谢

tzmwd19833 · June 15, 2021, 2:49am

我手机号17600771658同微信

czyhit · August 16, 2021, 1:43am

看了一下萤火虫的官方提供的LVDS屏幕HSX101H40C-L28B的参考，发现rk3399pro-firefly-aioc-lvds-HSX101H40C.dts的clock-frequency = <72000000>; //@60，而屏幕数据表的最高频率是70MHz，这个72MHz和70MHz匹配不了吗：
ITEM Symbol Min Typ Max Unit Note
DCLK Frequency tCLK 60 65 70 MHz
Period tHP 814 848 –
Width tWH 4 8 –
Hsync
Width-Active tWHA 800
tCLK
Period tVP 1286 1312 –
Width tWV 2 4 -
Vsync
Width-Active tWVA 1280
tHP
Horizontal back porch tHBP 8 8 –
Horizontal front porch tHFP 2 32 –
tCLK
Vertical back porch tVBP 2 11 –
Data
Enable
Vertical front porch tVFP 2 17 –
tHP