[Bug 109462] [bisected] Latest amd-staging-drm-next vega10 MCLK stuck on lowest level - bugzilla-daemon

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 109462] [bisected] Latest amd-staging-drm-next  vega10 MCLK stuck on lowest level
Date: Sun, 27 Jan 2019 02:15:44 +0000	[thread overview]
Message-ID: <bug-109462-502@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=109462

            Bug ID: 109462
           Summary: [bisected] Latest amd-staging-drm-next  vega10 MCLK
                    stuck on lowest level
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: bas@basnieuwenhuizen.nl
                CC: alexdeucher@gmail.com

Performance is more than halved in games (used Talos Principle on RADV for
bisection) due to the mclk being stuck at 167 MHz.

commit 42a2d4839bc4f095621d259a3ff5401063b914cc (HEAD, refs/bisect/bad)
Author: Evan Quan <evan.quan@amd.com>
Date:   Fri Jan 25 14:09:40 2019 +0800

    drm/amd/powerplay: support Vega10 SOCclk and DCEFclk dpm level settings

    Enable SOCclk and DCEFclk dpm level retrieving and setting on Vega10.

    Change-Id: Iab35a6cc85cdfcf48f06f7d20b95a52c6feb60d1
    Signed-off-by: Evan Quan <evan.quan@amd.com>
    Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

Kernel cmdline has
amdgpu.exp_hw_support=1 log_buf_len=1 amdgpu.sched_hw_submission=64
amdgpu.gpu_recovery=1 amdgpu.cik_support=1 radeon.cik_support=0
amdgpu.cg_mask=0 amdgpu.pg_mask=0 idle=nomwait

and nothing interesting showing up in dmesg.

I can't CC Evan Quan due to lack of bugzilla account.

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