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Commit ddfd3e50 authored by Ingrid Gallardo's avatar Ingrid Gallardo Committed by Gerrit - the friendly Code Review server
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drm/msm/sde: enable system cache for pagetable walks in mdp 



Enable system cache for mdp page table walks as
recommended.

Change-Id: I99230cebc43a880c061e1d165bb6478958980435
Signed-off-by: default avatarIngrid Gallardo <ingridg@codeaurora.org>
parent af41bba4

drivers/gpu/drm/msm/msm_smmu.c

+9 −0
Original line number Diff line number Diff line
@@ -455,6 +455,7 @@ static int _msm_smmu_create_mapping(struct msm_smmu_client *client, 
	const struct msm_smmu_domain *domain)

{

	int rc;

	int mdphtw_llc_enable = 1;



	client->mmu_mapping = arm_iommu_create_mapping(&platform_bus_type,

			domain->va_start, domain->va_size);
@@ -465,6 +466,14 @@ static int _msm_smmu_create_mapping(struct msm_smmu_client *client, 
		return PTR_ERR(client->mmu_mapping);

	}



	rc = iommu_domain_set_attr(client->mmu_mapping->domain,

			DOMAIN_ATTR_USE_UPSTREAM_HINT, &mdphtw_llc_enable);

	if (rc) {

		dev_err(client->dev, "couldn't enable mdp pagetable walks: %d\n",

			rc);

		goto error;

	}



	if (domain->secure) {

		int secure_vmid = VMID_CP_PIXEL;