Commit 85a13391 authored Jun 05, 2015 by Tarun Karra

msm: kgsl: Invalidate TLB and SMMU caches after GPU Power collapse



When gpu goes to power collapse we do not detach SMMU
on 8996 because of retention feature. When GPU comes out
of power collapse invalidate TLB and SMMU caches to reset
SMMU state as per recommendation of hardware team.

Change-Id: I53a67cdc2aad255b4f99f1708aae405542435e0c
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>

parent eaa0f226

drivers/gpu/msm/kgsl_iommu.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1006,6 +1006,7 @@ static int kgsl_iommu_start(struct kgsl_mmu *mmu)
		kgsl_map_global_pt_entries(mmu->defaultpagetable);

		kgsl_iommu_enable_clk(mmu);
		KGSL_IOMMU_SET_CTX_REG(iommu, 0, TLBIALL, 1);

		/* Get the lsb value of pagetables set in the IOMMU ttbr0 register as
		* that value should not change when we change pagetables, so while