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标题: Android 8.1 EDP 调试 [打印本页]
作者: zsj0613    时间: 2019-5-21 08:36
标题: Android 8.1 EDP 调试
各位朋友，现在使用AIO3399 调试一款10存1920*1200 LCD，EDP接口，参考网上资料，修改了DTS和驱动代码，编译的也是EDP的分支。现在LCD不显示（背光常亮），测试AUX无波形，请问还需要那些修改？  部分启动log如下：

  1. ockchip UBOOT DRM driver version: develop-v1.0.0
  2. failed to find phy node
  3. delay prepare[0] unprepare[0] enable[0] disable[0]
  4. read logo on state from dts [1]
  5. no fuel gauge found
  6. Using display timing from compatible panel driver
  7. Detailed mode clock 200000 kHz, flags[a]
  8.     H: 1536 1548 1564 1612
  9.     V: 2048 2056 2060 2068
  10. bus_format: 1009
  11. rk lcdc - 0 dclk set: dclk = 200000000HZ, pll select = 1, div = 1
  12. AUX CH command reply failed!
  13. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  14. AUX CH command reply failed!
  15. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  16. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  17. AUX CH command reply failed!
  18. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  19. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  20. AUX CH command reply failed!
  21. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  22. Rx Max Link Rate is abnormal :ff !
  23. AUX CH command reply failed!
  24. AUX CH command reply failed!
  25. LT link start failed!
  26. eDP link training failed (-110)
  27. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  28. AUX CH command reply failed!
  29. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  30. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  31. AUX CH command reply failed!
  32. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  33. AUX CH command reply failed!
  34. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  35. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  36. Rx Max Link Rate is abnormal :ff !
  37. AUX CH command reply failed!
  38. AUX CH command reply failed!
  39. LT link start failed!
  40. eDP link training failed (-110)
  41. AUX CH command reply failed!
  42. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  43. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  44. AUX CH command reply failed!
  45. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  46. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  47. AUX CH command reply failed!
  48. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  49. AUX CH command reply failed!
  50. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  51. Rx Max Link Rate is abnormal :ff !
  52. AUX CH command reply failed!
  53. AUX CH command reply failed!
  54. LT link start failed!
  55. eDP link training failed (-110)
  56. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  57. AUX CH command reply failed!
  58. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  59. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  60. AUX CH command reply failed!
  61. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  62. AUX CH command reply failed!
  63. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  64. analogix_dp_read_byte_from_dpcd: Aux Transaction fail!
  65. Rx Max Link Rate is abnormal :ff !
  66. AUX CH command reply failed!
  67. AUX CH command reply failed!
  68. LT link start failed!
  69. eDP link training failed (-110)
  70. AUX CH command reply failed!
复制代码



作者: zsj0613    时间: 2019-5-22 18:48
搞定 收工
作者: 18580471512    时间: 2019-6-13 18:37
zsj0613 发表于 2019-5-22 18:48
搞定 收工

请问你是如何解决的呢？我出现的log跟你一样的问题
作者: zsj0613    时间: 2019-6-13 18:49
18580471512 发表于 2019-6-13 18:37
请问你是如何解决的呢？我出现的log跟你一样的问题

我是硬件问题，把线序确定好就行，这个错误是因为AUX通信失败
作者: 18580471512    时间: 2019-6-17 11:18
zsj0613 发表于 2019-6-13 18:49
我是硬件问题，把线序确定好就行，这个错误是因为AUX通信失败

我吧我的LOG贴出来，我的是AUX通信失败  线序上问题大吗
作者: 18580471512    时间: 2019-6-17 11:28
LOG

QQ图片20190617111730.png (14.8 KB, 下载次数: 712)

QQ图片20190617111730.png
作者: zsj0613    时间: 2019-6-18 11:39
18580471512 发表于 2019-6-17 11:28
LOG

哥们 想多不用想 你这个肯定是AUX通信失败，不管怎么样，先把这个解决，这个不属于软件问题，找硬件配合你一起看看吧



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