From: Jordan Crouse jcrouse@codeaurora.org
[ Upstream commit 32aa27e15c28d3898ed6f9b3c98f95f34a81eab2 ]
The point of the 'force_dma' parameter for of_dma_configure is to force the device to be set up even if DMA capability is not described by the firmware which is exactly the use case we have for GMU - we need SMMU to get set up but we have no other dma capabilities since memory is managed by the GPU driver. Currently we pass false so of_dma_configure() fails and subsequently GMU and GPU probe does as well.
Fixes: 4b565ca5a2c ("drm/msm: Add A6XX device support") Signed-off-by: Jordan Crouse jcrouse@codeaurora.org Tested-by: Sibi Sankar sibis@codeaurora.org Signed-off-by: Rob Clark robdclark@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c index 9acb9dfaf57e6..9cde79a7335c8 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c @@ -1140,7 +1140,7 @@ int a6xx_gmu_probe(struct a6xx_gpu *a6xx_gpu, struct device_node *node)
gmu->dev = &pdev->dev;
- of_dma_configure(gmu->dev, node, false); + of_dma_configure(gmu->dev, node, true);
/* Fow now, don't do anything fancy until we get our feet under us */ gmu->idle_level = GMU_IDLE_STATE_ACTIVE;