[Bug 70524] New: [DP audio] The ITE DP audio fails with certain display resolution settings, using intel-drm nightly build kernel

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70524

          Priority: medium
            Bug ID: 70524
          Assignee: chris at chris-wilson.co.uk
           Summary: [DP audio] The ITE DP audio fails with certain display
                    resolution settings, using intel-drm nightly build
                    kernel
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: ken.lin at advantech.com.tw
          Hardware: x86 (IA32)
            Status: NEW
           Version: git
         Component: Driver/intel
           Product: xorg

Created attachment 87717
  --> https://bugs.freedesktop.org/attachment.cgi?id=87717&action=edit
details info - wave forms and comparison results

The ITE DP audio fails with certain display resolution settings, using
intel-drm nightly build kernel.
(1) Linux (5.1ch 44.1K) + IT6506 1280x1024 60HZ/DP 2 Lane LBR => Audio no
output.
(2) Linux (5.1ch 44.1K) + IT6506 1920x1080 60HZ/DP 4 Lane LBR => Audio stable
OK.

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