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Linux/SN65DSI86: test pattern can show, but dsi can't show

Part Number: SN65DSI86

Tool/software: Linux

Dear TI:

We are using dp port of the sn65dsi86 evm board.

We can show sn65dsi86 test pattern on screen.

But failed to show image from dsi.

I tried to read value from register 0xf0-0xf8, and they are

0xf0 val = 0x03

0xf1 val = 0x00
0xf2 val = 0x00
0xf3 val = 0x00
0xf4 val = 0x09
0xf5 val = 0x02
0xf6 val = 0x00
0xf7 val = 0x0

0xf8 val = 0x00

Is there any comment to solve these error?

I found that I can't use AUX to communicate with the screen. What training method should I use?I 've tried semo-auto training but failed; fast training passed but the screen show nothing.

Someone from TI suggested me to enable VOD and Pre-emphasis Level 3, how to do it? Dose that mean to make 0x93 bit 6-7=0x03, then what training method should be used?

I've tried to make 0x96 = 0x01 in this case but fail to make screen show also.

Since I use dp to test, should I change assr to "Standard DP Scrambler Seed" in regster 0x5a.