[Bug 101835] New: ApolloLake HDMI 2.0 port cannot pass through Dolby TrueHD and DTS-HD under Linux

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101835

            Bug ID: 101835
           Summary: ApolloLake HDMI 2.0 port cannot pass through Dolby
                    TrueHD and DTS-HD under Linux
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: samuelchueh at asustor.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Hi, we encounter an issue on ApolloLake platform. Our system includes a HDMI
2.0 port which is DP 1.2 à LSPCON (Parade PS176) à HDMI 2.0. We found that this
port cannot pass through HBR audio streams (i.e., Dolby TrueHD and DTS-HD MA)
under Linux. However video is playing correctly. And the other native HDMI 1.4
port can pass through those audio formats. We tested this issue under Unbuntu
16.04 and 17.04.  And we upgraded Linux kernel to the latest one: v4.12 and
KODI 17.3. The result is the same.

However, this port can pass through Dolby TrueHD and DTS-HD under Windows-10
(using KODI software) without problems

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