About EDID Problem

Hi,

  Below are the resolution which are supported in the 4 lane output, Please confirm from your end.

  For more details refer Page 209 in ADV748x Hardware Manual.

Also kindly note that, PC/Laptop generally do not work unless they see a valid EDID & PC will only recognize a sink device only when they detect a valid EDID.
So please make sure whether you are configuring with a valid EDID.

Thanks,

Poornima

Hello, 

Unfortunately the URL you shared didn't work for me, it redirects to the EngineerZone homepage.

When I checked, I did not encounter a problem with the settings. Actually, the problem I have is as follows,
With the EDID table I found in the kernel archive and used, I can get valid stream only at 1280x720p@59.74Hz.
I cannot get any other resolution and refresh rate. I can see only a green screen. Is my problem in pixel clock or EDID table?

I will try to get 1920x1080p@60Hz in the first step. Can you make suggestions for this?

Best.

Hi,

  Could you please do the below configuration for '1920x1080p60' and let us know your observation on this.

:01-30 HDMI to MIPI TxA CSI 4-Lane - RGB888, Over 600Mbps:
E0 FF FF ; SW reset
delay 5 ;
E0 01 76 ; ADI Required Write
E0 05 5E ; Setting Vid_Std to 1920x1080p@60
E0 F2 01 ; Enable I2C Read Auto-Increment
E0 F3 4C ; DPLL Map Address Set to 0x4C
E0 F4 44 ; CP Map Address Set to 0x44
E0 F5 68 ; HDMI RX Map Address Set to 0x68
E0 F6 6C ; EDID Map Address Set to 0x6C
E0 F7 64 ; HDMI RX Repeater Map Address Set to 0x64
E0 F8 62 ; HDMI RX Infoframe Map Address Set to 0x62
E0 F9 F0 ; CBUS Map Address Set to 0xF0
E0 FA 82 ; CEC Map Address Set to 0x82
E0 FB F2 ; SDP Main Map Address Set to 0xF2
E0 FC 90 ; CSI-TXB Map Address Set to 0x90
E0 FD 94 ; CSI-TXA Map Address Set to 0x94
E0 00 40 ; Disable chip powerdown & Enable HDMI Rx block
64 40 83 ; Enable HDCP 1.1
68 00 08 ; Foreground Channel = A
68 98 FF ; ADI Required Write
68 99 A3 ; ADI Required Write
68 9A 00 ; ADI Required Write
68 9B 0A ; ADI Required Write
68 9D 40 ; ADI Required Write
68 CB 09 ; ADI Required Write
68 3D 10 ; ADI Required Write
68 3E 7B ; ADI Required Write
68 3F 5E ; ADI Required Write
68 4E FE ; ADI Required Write
68 4F 18 ; ADI Required Write
68 57 A3 ; ADI Required Write
68 58 04 ; ADI Required Write
68 85 10 ; ADI Required Write
68 83 00 ; Enable All Terminations
68 A3 01 ; ADI Required Write
68 BE 00 ; ADI Required Write
68 6C 01 ; HPA Manual Enable
68 F8 01 ; HPA Asserted
68 0F 00 ; Audio Mute Speed Set to Fastest (Smallest Step Size)
E0 04 02 ; RGB Out of CP
E0 12 F0 ; CSC Depends on ip Packets - SDR 444
E0 17 80 ; Luma & Chroma Values Can Reach 254d
E0 03 86 ; CP-Insert_AV_Code
44 7C 00 ; ADI Required Write
E0 0C E0 ; Enable LLC_DLL & Double LLC Timing
E0 0E DD ; LLC/PIX/SPI PINS TRISTATED AUD Outputs Enabled
E0 10 A0 ; Enable 4-lane CSI Tx & Pixel Port
94 00 84 ; Enable 4-lane MIPI
94 00 A4 ; Set Auto DPHY Timing
94 DB 13 ; ADI Required Write
94 D6 07 ; ADI Required Write
94 C4 0A ; ADI Required Write
94 71 33 ; ADI Required Write
94 72 11 ; ADI Required Write
94 F0 00 ; i2c_dphy_pwdn - 1'b0
94 31 82 ; ADI Required Write
94 1E 40 ; ADI Required Write
94 DA 01 ; i2c_mipi_pll_en - 1'b1
delay 2 ;
94 00 24 ; Power-up CSI-TX
delay 1 ;
94 C1 2B ; ADI Required Write
delay 1 ;
94 31 80 ; ADI Required Write
End

Thanks,

Poornima

Hello,

Unfortunately, it didn't work. The green window I mentioned in the previous message is gone, now I can get a black window.

I've used  "01-21 HDMI to MIPI TxA CSI 4-Lane - YUV422 8-Bit, Up to 600Mbps" before. 

Do you have any suggestions for debug?

Best.

Dear Melsis,

What board are you using?

-Matt

Hi,

It's custom design with ADV7480 and Nvidia Orin NX.

Best.