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Commit 78b03510 authored by Alex Deucher's avatar Alex Deucher
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drm/radeon/dpm: reduce r7xx vblank mclk threshold to 200 

Most laptops seems to have a vblank period of less than
300 and mclk switching works fine.  Drop the quirk and
set the default threshold to 200.

bug:
https://bugzilla.kernel.org/show_bug.cgi?id=70701



Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent bea61c59

drivers/gpu/drm/radeon/rv770_dpm.c

+1 −8
Original line number Diff line number Diff line
@@ -2526,14 +2526,7 @@ 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;



	/* quirks */

	/* ASUS K70AF */

	if ((rdev->pdev->device == 0x9553) &&

	    (rdev->pdev->subsystem_vendor == 0x1043) &&

	    (rdev->pdev->subsystem_device == 0x1c42))

		switch_limit = 200;

	u32 switch_limit = 200; /* 300 */



	/* RV770 */

	/* mclk switching doesn't seem to work reliably on desktop RV770s */