sn65dsi86 测试模式没写HBP导致的问题？

最新推荐文章于 2024-01-12 14:10:57 发布

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本篇博客讨论了在 OMAP4 平台上使用 SN65DSI86 进行调试时遇到的问题，特别是在显示颜色条纹模式下 HSync 和 VSync 定位不正确的情况。作者分享了 SN65DSI86 的寄存器配置，并最终发现是由于 HBP 值未正确设置导致的问题。

https://e2e.ti.com/support/interface/digital_interface/f/130/t/351002#pi239031350filter=answers&pi239031350scroll=false

https://e2e.ti.com/search?q=sn65dsi86

这网站不错，真的很好，很多sn65dsi86 的主题帖子。

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Hello,

I work on OMAP4 platform with SN65DSI86, today I got a new LCD panel want verify it under color bar mode.

but faced an issues with Color bar, would you give me some suggestion?

the result show on below, I guess the panel miss Hsync & Vsync position.


 Dump SN65DSI86 register
      00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
 -------------------------------------------------------
 00 | 36 38 49 53 44 20 20 20 02 00 82 00 00 01 00 00
 10 | 20 00 41 00 00 00 00 00 00 00 00 00 00 00 00 00
 20 | 80 07 00 00 b0 04 00 00 00 00 00 00 20 00 00 00
 30 | 06 00 00 00 00 00 30 00 50 00 18 00 14 00 00 00
 40 | df 49 00 00 80 00 f0 07 fe 04 20 00 36 00 20 00
 50 | 06 00 80 07 b0 04 20 00 40 e4 0d 00 10 00 90 00
 60 | a0 60 a4 00 00 00 00 00 00 00 00 00 00 00 00 00
 70 | 00 00 00 00 00 01 02 01 80 81 00 00 00 00 00 00
 80 | 00 00 00 00 00 00 00 00 00 1f 7c f0 c1 07 1f 7c
 90 | f0 c1 07 24 80 00 01 04 01 00 00 00 00 00 00 00
 a0 | 01 ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00
 b0 | 04 78 ac ac 08 6c 9c 9c 0c 5c 5c 5c 0c 0c 0c 0c
 c0 | 3f 3f 0f 00 00 00 00 00 00 00 00 00 00 00 00 00
 d0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 e0 | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 f0 | 00 00 00 00 01 02 00 00 01 00 00 00 00 00 00 00
 Panel DPCD 
     | 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
 --------------------------------------------------------
 000 | 11 0a 82 41 00 00 01 c0 02 03 00 00 00 0b 00 00
 100 | 0a 82 00 00 00 00 00 00 00 00 01 00 00 00 00 00
 200 | 01 00 77 00 01 01 00 00 00 00 00 00 00 00 00 00
 210 | 00 80 00 80 00 80 00 80 00 00 00 00 00 00 00 00
 700 | 02 82 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Panel EDID

[ 5.906341] Dump edid

[ 5.909088] 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

[ 5.915863] -------------------------------------------------------

[ 5.923065] 00 | 00 ff ff ff ff ff ff 00 34 a9 00 41 00 00 00 00

[ 5.929809] 10 | ff 18 01 04 a5 15 0d 78 ea 5d 01 9a 5b 4e 95 27

[ 5.936676] 20 | 25 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01

[ 5.944396] 30 | 01 01 01 01 01 01 38 40 80 e0 70 b0 4e 40 50 20

[ 5.951019] 40 | 86 04 d8 87 00 00 00 1e 60 33 80 e0 70 b0 4e 40

[ 5.957580] 50 | 50 20 86 04 d8 87 00 00 00 1e 00 00 00 0f 00 30

[ 5.964172] 60 | 3c 3d 4c 10 01 28 00 00 00 00 00 00 00 00 00 fe

[ 5.970764] 70 | 00 56 56 46 31 30 46 31 38 38 4e 30 30 0a 00 2b

Hi,