DSI配置为4K2K显示时不正常，无法全屏显示

kfeifei · 发表于 2024-1-17 10:36:34

本帖最后由 kfeifei 于 2024-1-17 10:38 编辑

只是将roc-rk3588s-pc-mipi101-M101014-BE45-A1-v10.dtsi中DSI0配置为4K2K，显示图像不是全屏。
显示为一个低分辨率的小图，其他部分都是雪花点。
没有log；

修改前：
      disp_timings0: display-timings {
         native-mode = <&dsi_timing0>;
         dsi_timing0: timing0 {
            clock-frequency = <72600000>;//<80000000>;
            hactive = <800>;//<768>;
            vactive = <1280>;
            hsync-len = <14>; //20, 50,10
            hback-porch = <26>; //50, 56,10
            hfront-porch = <32>;//50, 30,180
            vsync-len = <8>;//4
            vback-porch = <20>;//4
            vfront-porch = <80>;//8
            hsync-active = <0>;
            vsync-active = <0>;
            de-active = <0>;
            pixelclk-active = <0>;
         };
      };

修改后：
      disp_timings0: display-timings {
         native-mode = <&dsi_timing0>;
         dsi_timing0: timing0 {
            //clock-frequency =  <594000000>;  //60fps
            clock-frequency =  <198000000>;  //20fps
            //clock-frequency =  <148500000>;  //15fps
            hactive = <3840>;
            vactive = <2160>;
            hfront-porch = <176>;
            hsync-len = <88>;
            hback-porch = <296>;
            vsync-len = <10>;
            vback-porch = <8>;
            vfront-porch = <72>;
            hsync-active = <0>;
            vsync-active = <0>;
            de-active = <0>;
            pixelclk-active = <0>;
         };
      };

ffcoretek · 发表于 2024-7-18 14:38:49

我也遇到类似问题，在 ./kernel/arch/arm64/boot/dts/rockchip/roc-rk3588s-pc-mipi101-M101014-BE45-A1-v10.dtsi 中配置成 3840*2160 ，启动画面能显示，但是进了系统不能显示，看了下DSI-1参数，分辨率和帧率都变掉了（配置成1920*1080的时候没有这个问题）：

DSI-1 connected 1280x800+1920+0 (normal left inverted right x axis y axis) 0mm x             0mm
1368x768    59.88
1280x800    59.81*
1280x720    59.86
1024x768    60.00
1024x576    59.90
960x540    59.63
800x600    60.32
800x450    59.82
700x450    59.88
640x480    59.94
684x384    59.88 59.85
640x400    59.88 59.98
640x360    59.86 59.83
512x384    60.00
512x288    60.00 59.92
480x270    59.63 59.82
400x300    60.32
320x240    60.05

ffcoretek · 发表于 2024-7-18 14:45:28

系统log显示 3840x2160p15 ，这个是我需要的配置；但是进了ubuntu系统之后就不对了。
------------------------------
dsi@fde20000: detailed mode clock 130000 kHz, flags[a]
H: 3840 3865 3870 3895
V: 2160 2182 2183 2205
bus_format: 100e
VOP update mode to: 3840x2160p15, type: MIPI0 for VP3

在ubuntu系统里面，cat /sys/kernel/debug/dri/0/summary

[Linux] DSI配置为4K2K显示时不正常，无法全屏显示

【Linux】 DSI配置为4K2K显示时不正常，无法全屏显示