Bug 107897 - [Gemini Lake] HDMI 2.0 compliance test failed - HF1-23 E-DDC protocol- Read request- Clock stretching
Summary: [Gemini Lake] HDMI 2.0 compliance test failed - HF1-23 E-DDC protocol- Read r...
Status: CLOSED NOTOURBUG
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium major
Assignee: Clinton Taylor
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard: Triaged
Keywords:
Depends on:
Blocks: 107905
  Show dependency tree / graph
 
Reported: 2018-09-11 03:31 UTC by JingWu Lin
Modified: 2018-12-28 09:20 UTC (History)
2 users (show)

See Also:
i915 platform: GLK
i915 features: display/HDMI

Attachments
steps (39.16 KB, image/jpeg)
2018-09-11 03:31 UTC, JingWu Lin 		no flags Details
H1-23 ERROR (24.44 KB, image/jpeg)
2018-09-11 03:32 UTC, JingWu Lin 		no flags Details
HF1-23 results with latest QD980B firmware (7.43 KB, application/zip)
2018-10-17 18:05 UTC, Clinton Taylor 		no flags Details
View All

Description JingWu Lin 2018-09-11 03:31:46 UTC 
Created attachment 141517 [details]
steps

GKL fails HDMI 2.0 compliance test HF1-23 E-DDC protocol- Read request- Clock stretching.
Comment 1 JingWu Lin 2018-09-11 03:32:33 UTC 
Created attachment 141518 [details]
H1-23 ERROR
Comment 2 Lakshmi 2018-09-11 06:31:28 UTC 
Please try to reproduce the error using drm-tip (https://cgit.freedesktop.org/drm-tip) and kernel parameters drm.debug=0x1e log_buf_len=4M, and if the problem persists attach the full dmesg from boot.
Comment 3 Clinton Taylor 2018-10-05 17:48:30 UTC 
The SOC DDC controller does support clock stretching. My QD980B does not have the required test package to test HF1-23. Can another team reproduce this issue?
Comment 4 Clinton Taylor 2018-10-17 18:05:43 UTC 
Created attachment 142073 [details]
HF1-23 results with latest QD980B firmware

Latest version of QD980B firmware has a fix for a known issue with the HF1-23 compliance test. Using FW version 5.01.06_23474_201808100859 results in passing results as seen in attachment.
Comment 5 Clinton Taylor 2018-10-17 18:06:29 UTC 
Update QD980B to Version 5.01.06_23474_201808100859 FW or later

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