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| author |   hersen wu <hersenxs.wu@amd.com> | 2019-08-02 16:01:37 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2019-08-23 11:46:02 -0500 |
| commit | f49cfa279b9a2214172d13e87fe6a11bd3941f67 (patch) | |
| tree | eb29f996558047584af36c5bdab96cedc27c072f /drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | |
| parent | drm/amd/display: Properly read LVTMA_PWRSEQ_CNTL (diff) | |
| download | wireguard-linux-f49cfa279b9a2214172d13e87fe6a11bd3941f67.tar.xz wireguard-linux-f49cfa279b9a2214172d13e87fe6a11bd3941f67.zip | |
drm/amd/display: flicking observed while installing driver on Navi10 CF
[WHY] value of dchub_ref_clock is decided by dchubbub global timer
settings which is programmed by vbios command table disp_init.
for multi-GPU case, vbios is posted only for primary GPU. without
vbios posted for the secondary GPU, value of dchub_ref_clock is not
set properly. this value will affect dcn bandwidth calcuation and
cause underflow. user will see screen flicking during driver
installation for dual GPU case.
[HOW] dc init_hw always call vbios command table disp_init to
make sure dchubbub global timer is configured and enable.
Signed-off-by: hersen wu <hersenxs.wu@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c')
0 files changed, 0 insertions, 0 deletions