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drm/radeon: don't reset dma on r6xx-evergreen init 

Otherwise we may lose the DMA golden settings which can
lead to hangs, etc.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
hifive-unleashed-5.1
Alex Deucher 2014-09-18 10:23:04 -04:00
parent 799028d5d8
commit c1789a2e66
1 changed files with 0 additions and 9 deletions
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9
drivers/gpu/drm/radeon/r600_dma.c
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@ -124,15 +124,6 @@ int r600_dma_resume(struct radeon_device *rdev)
u32 rb_bufsz;
int r;
/* Reset dma */
if (rdev->family >= CHIP_RV770)
WREG32(SRBM_SOFT_RESET, RV770_SOFT_RESET_DMA);
else
WREG32(SRBM_SOFT_RESET, SOFT_RESET_DMA);
RREG32(SRBM_SOFT_RESET);
udelay(50);
WREG32(SRBM_SOFT_RESET, 0);
WREG32(DMA_SEM_INCOMPLETE_TIMER_CNTL, 0);
WREG32(DMA_SEM_WAIT_FAIL_TIMER_CNTL, 0);