The LCD has a relatively short vblank time (216us), but
the card is able to reclock memory fine in that time.
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Reported-by: normalrawr@xxxxxxxxx
---
drivers/gpu/drm/radeon/rv770_dpm.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/radeon/rv770_dpm.c b/drivers/gpu/drm/radeon/rv770_dpm.c
index 094c67a..44c1e78 100644
--- a/drivers/gpu/drm/radeon/rv770_dpm.c
+++ b/drivers/gpu/drm/radeon/rv770_dpm.c
@@ -2517,8 +2517,16 @@ u32 rv770_dpm_get_mclk(struct radeon_device *rdev, bool low)
bool rv770_dpm_vblank_too_short(struct radeon_device *rdev)
{
u32 vblank_time = r600_dpm_get_vblank_time(rdev);
+ u32 switch_limit = 300;
- if (vblank_time < 300)
+ /* quirks */
+ /* ASUS K70AF */
+ if ((rdev->pdev->device == 0x9553) &&
+ (rdev->pdev->subsystem_vendor == 0x1043) &&
+ (rdev->pdev->subsystem_device == 0x1c42))
+ switch_limit = 200;
+
+ if (vblank_time < switch_limit)
return true;
else
return false;
--
1.8.3.1
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