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Interfacing (DSI, CSI, I2C, etc.) • Re: CM4 DSI1 + SN65DSI83 Bridge based display (6.1.x kernel)

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What do you use for connecting to your display? Is that an impedance matched FPC?
How is your MIPI DSI routing? Have you lenght and impedance matched the signals?

As this is all custom there is nothing more I can do for you. Make a dump of the DSI83 registers to see if they are written correct. The rest is the MIPi interface, will have to leave debugging up to you.

Code:

[    1.638322] vc4-drm gpu: bound fe700000.dsi (ops vc4_dsi_ops)
binding the bridge is working --> try connecting a known working DSI display, check your traces.

Statistics: Posted by aBUGSworstnightmare — Sat Mar 02, 2024 7:07 pm



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