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.deuc...@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
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