Clamp the vblank period to 0 if the refresh rate is larger than 120 hz for non-DC. This allows us to remove the refresh rate checks from powerplay for mclk switching. Signed-off-by: Alex Deucher <alexander.deucher at amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c index 71b4aec7f650..dc3360b16bda 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c @@ -953,6 +953,11 @@ static int amdgpu_cgs_get_active_displays_info(struct cgs_device *cgs_device, (amdgpu_crtc->v_border * 2); mode_info->vblank_time_us = vblank_lines * line_time_us; mode_info->refresh_rate = drm_mode_vrefresh(&amdgpu_crtc->hw_mode); + /* we have issues with mclk switching with refresh rates + * over 120 hz on the non-DC code. + */ + if (mode_info->refresh_rate > 120) + mode_info->vblank_time_us = 0; mode_info = NULL; } } -- 2.13.6
