[Bug 102937] New: [GLK-RVP]HDA verb command response timedout; board to board variation with same S/W

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102937

            Bug ID: 102937
           Summary: [GLK-RVP]HDA verb command response timedout; board to
                    board variation with same S/W
           Product: DRI
           Version: unspecified
          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: abhay.kumar at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

1. Environment 
               GLK-RVP2C/GLK-RVP2D, Chrome OS.
               During Probe, we are observing "HDA verb commands response
getting timedout

When HDMI is connected then it works fine and in absence it works on some board
and not on some board.

2. Expected Behavior 

    HDA verb commands should not timeout.

3. Actual Behavior 
    HDA verb commands getting timeout.
    As timeout occurring, codec probe failed. Because of this, sound card not
created and hence Audio fails

power well registers are same in passing and fail usecase.
localhost ~ # intel_reg read 0x45404
Warning: stat '/usr/share/intel-gpu-tools/registers' failed: No such file or
directory. Using builtin register spec.
(0x00045404): 0xf03f000c
localhost ~ # intel_reg read 0x45405
Warning: stat '/usr/share/intel-gpu-tools/registers' failed: No such file or
directory. Using builtin register spec.
(0x00045405): 0xffffffff
localhost ~ # intel_reg read 0x45406
Warning: stat '/usr/share/intel-gpu-tools/registers' failed: No such file or
directory. Using builtin register spec.
(0x00045406): 0xffffffff
localhost ~ # intel_reg read 0x45407
Warning: stat '/usr/share/intel-gpu-tools/registers' failed: No such file or
directory. Using builtin register spec.
(0x00045407): 0xffffffff

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