[问答]

mipi通信失败的原因？如何解决？

5154 MIPI

问答对人有帮助，内容完整，我也想知道答案 0 更换了mipi屏幕，使用ili9881c驱动，设备树中修改内容如下： &mipi_dsi { status = "okay"; panel@0 { /compatible = "forlinx,mipi7";/ compatible = "ilitek,ili9881c"; reg = <0>; reset-gpios = <&gpio1 9 0>; dsi-lanes = <4>; vddio-mode = <2>; }; ... } 在drivers/gpu/drm/panel/中增加panel-ilitek-ili9881c.c，相应修改deconfg，Kconfig，Makefile。编译通过，烧到板中以后打印信息如下： [ 1.247836] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 1.254493] [drm] No driver support for vblank timestamp query. [ 1.260528] imx-drm display-subsystem: bound imx-lcdif-crtc.0 (ops lcdif_crtc_ops) [ 1.268247] imx_sec_dsim_drv 32e10000.mipi_dsi: version number is 0x1060200 [ 1.275376] ili9881c start probe [ 1.278731] ili9881c-dsi 32e10000.mipi_dsi.0: 32e10000.mipi_dsi.0 supply power not found, using dummy regulator [ 1.288904] get gpio suc [ 1.288907] find node backlight suc [ 1.295032] add panel suc [ 1.297803] imx-drm display-subsystem: bound 32e10000.mipi_dsi (ops imx_sec_dsim_ops) [ 1.309297] imx-drm display-subsystem: fb0: frame buffer device [ 1.315665] [drm] Initialized imx-drm 1.0.0 20120507 for display-subsystem on minor 0 …… [ 8.333126] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 8.352641] 8021q: 802.1Q VLAN Support v1.8 [ 8.586968] imx_sec_dsim_drv 32e10000.mipi_dsi: wait pkthdr tx done time out [ 8.594168] imx_sec_dsim_drv 32e10000.mipi_dsi: panel disable failed: -16 [ 8.858952] imx_sec_dsim_drv 32e10000.mipi_dsi: wait pkthdr tx done time out [ 8.920904] ili9881c start prepare [ 8.938885] power panel suc [ 9.098897] reset gpio suc [ 9.354907] imx_sec_dsim_drv 32e10000.mipi_dsi: wait payload tx done time out [ 9.362068] send cmd 0 times [ 9.365123] imx_sec_dsim_drv 32e10000.mipi_dsi: panel prepare failed: -16 [ 9.374332] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.391354] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.452893] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.463703] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.491609] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.502167] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.530326] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.541565] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.569021] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.580252] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.607761] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.618398] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.645975] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.656868] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.684645] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.695288] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.723336] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.733872] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.762061] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.772889] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.800797] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.811492] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.839470] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.850009] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.878203] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector [ 9.889162] imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector …… 请问imx_sec_dsim_drv 32e10000.mipi_dsi: no bus formats assigned by connector这个问题需要修改什么可以解决 0
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答案对人有帮助，有参考价值 0 https://community.nxp.com/thread/523758，目前没有遇到过这种情况，针对您的报错在网上查找了一下，您可以看看

2021-12-31 10:22:19 评论举报郑玉兰