IMX93 mipi屏幕点不亮

yangx — Wed, 31 Jan 2024 09:03:50 GMT

你好！

mipi屏幕分辨率为1280X800

bound日志：

[ 1.787698] imx-drm display-subsystem: bound imx-lcdifv3-crtc.0 (ops lcdifv3_crtc_ops) [ 1.795683] imx-drm display-subsystem: bound 4ae10000.dsi (ops dw_mipi_dsi_imx_ops)

modetest命令：

root@imx93evk:~# modetest trying to open device 'i915'...failed trying to open device 'amdgpu'...failed trying to open device 'radeon'...failed trying to open device 'nouveau'...failed trying to open device 'vmwgfx'...failed trying to open device 'omapdrm'...failed trying to open device 'exynos'...failed trying to open device 'tilcdc'...failed trying to open device 'msm'...failed trying to open device 'sti'...failed trying to open device 'tegra'...failed trying to open device 'imx-drm'...done Encoders: id crtc type possible crtcs possible clones 34 33 DSI 0x00000001 0x00000001 Connectors: id encoder status name size (mm) modes encoders 35 34 connected DSI-1 0x0 1 34 modes: index name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot #0 800x1280 59.39 800 830 850 870 1280 1300 1304 1316 68000 flags: nhsync, nvsync; type: preferred, driver props: 1 EDID: flags: immutable blob blobs: value: 2 DPMS: flags: enum enums: On=0 Standby=1 Suspend=2 Off=3 value: 0 5 link-status: flags: enum enums: Good=0 Bad=1 value: 0 6 non-desktop: flags: immutable range values: 0 1 value: 0 4 TILE: flags: immutable blob blobs: value: CRTCs: id fb pos size 33 39 (0,0) (800x1280) #0 800x1280 59.39 800 830 850 870 1280 1300 1304 1316 68000 flags: nhsync, nvsync; type: preferred, driver props: 24 VRR_ENABLED: flags: range values: 0 1 value: 0 Planes: id crtc fb CRTC x,y x,y gamma size possible crtcs 31 33 39 0,0 0,0 0 0x00000001 formats: XR24 AR24 RG16 XB24 AB24 AR15 XR15 props: 8 type: flags: immutable enum enums: Overlay=0 Primary=1 Cursor=2 value: 1 32 zpos: flags: immutable range values: 0 0 value: 0 Frame buffers: id size pitch root@imx93evk:~#

fbset命令：

root@imx93evk:~# fbset mode "800x1280" geometry 800 1280 800 1280 32 timings 0 0 0 0 0 0 0 accel true rgba 8/16,8/8,8/0,0/0 endmode

屏幕是在IMX8mp上点亮过的，初始化timing序列是没问题的，一般但是IMX93就是不亮桌面不知道是什么情况，希望给个建议。

ps:感觉整个时钟都不对的，音频和LVDS的时钟频率是试出来的，而不是硬件数据算出来的。

Re: IMX93 mipi屏幕点不亮

yangx — Wed, 31 Jan 2024 09:14:51 GMT

把IMX93的设备树的LVDS的ldb_phy关闭了。

&ldb_phy { status = "disabled"; };

已经调试这个屏幕2周了，希望有人可以回复一下。

Re: IMX93 mipi屏幕点不亮

yangx — Mon, 05 Feb 2024 10:10:57 GMT

已解决！pixeclock问题！！！！

Re: IMX93 mipi屏幕点不亮

Bio_TICFSL — Mon, 05 Feb 2024 15:50:06 GMT

Hello,

If the display works on MX8MP then copy the dtb in the MX93, the clock and the output should be the same.

regards

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