[Bug 81210] New: [BSW]igt/pm_rpm/ i2c causes "[drm:valleyview_set_cdclk] *ERROR* timed out waiting for CDclk change "

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81210

          Priority: medium
            Bug ID: 81210
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BSW]igt/pm_rpm/ i2c causes
                    "[drm:valleyview_set_cdclk] *ERROR* timed out waiting
                    for CDclk change "
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jinxianx.guo at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 102598
  --> https://bugs.freedesktop.org/attachment.cgi?id=102598&action=edit
dmesg

==System Environment==
--------------------------
Regression: No

Non-working platforms: BSW

==kernel==
--------------------------
origin/drm-intel-nightly: 140ef1831108dabeeb68bcaa046c2aee44990eb3(fails)
    drm-intel-nightly: 2014y-07m-10d-22h-32m-44s integration manifest


==Bug detailed description==
igt/pm_rpm/ i2c causes  "[drm:valleyview_set_cdclk] *ERROR* timed out waiting
for CDclk change "


Output:
[root at x-bsw01 tests]# ./pm_rpm --run-subtest i2c
IGT-Version: 1.7-g8d60b82 (x86_64) (Linux:
3.16.0-rc4_drm-intel-nightly_140ef1_20140711+ x86_64)
Runtime PM support: 1
PC8 residency support: 0
Test assertion failure function enable_one_screen_with_type, file pm_rpm.c:318:
Last errno: 22, Invalid argument
Failed assertion: rc == 0
Subtest i2c: FAIL
[root at x-bsw01 tests]# dmesg -r | egrep "<[1-3]>" |grep drm
<3>[11771.736671] [drm:valleyview_set_cdclk] *ERROR* timed out waiting for
CDclk change

[root at x-bsw01 tests]# ./kms_flip --run-subtest wf_vblank
IGT-Version: 1.7-g8d60b82 (x86_64) (Linux:
3.16.0-rc4_drm-intel-nightly_140ef1_20140711+ x86_64)
Using monotonic timestamps
Beginning wf_vblank on crtc 17, connector 29
  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 0x5 0x48 148500
....................................................................................................................................................................................
wf_vblank on crtc 17, connector 29: PASSED

Subtest wf_vblank: SUCCESS
[root at x-bsw01 tests]# dmesg -r | egrep "<[1-3]>" |grep drm
<3>[12289.183365] [drm:valleyview_set_cdclk] *ERROR* timed out waiting for
CDclk change


==Reproduce steps==
---------------------------- 
1. ./pm_rpm --run-subtest i2c
or
./kms_flip --run-subtest wf_vblank

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