[PATCH] iommu/arm-smmu-qcom: Add glymur MDSS to ACTLR client table
Lokanadha M R
lokanadha.r at oss.qualcomm.com
Tue Apr 28 02:43:50 PDT 2026
Add qcom,glymur-mdss to the qcom_smmu_actlr_client_of_match[]
table to configure the SMMU-500 context bank for the display
subsystem (MDSS) on the Glymur platform.
The settings disable the next-page prefetcher while keeping
macro TLB caching enabled. Without this entry,
qcom_smmu_set_actlr_dev() finds no match for the glymur MDSS
device and leaves the context bank ACTLR at its reset value.
Signed-off-by: Lokanadha M R <lokanadha.r at oss.qualcomm.com>
---
drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index edd41b5a3b6a..6df48499a4b2 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
@@ -41,6 +41,8 @@ static const struct of_device_id qcom_smmu_actlr_client_of_match[] = {
.data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
{ .compatible = "qcom,fastrpc",
.data = (const void *) (PREFETCH_DEEP | CPRE | CMTLB) },
+ { .compatible = "qcom,glymur-mdss",
+ .data = (const void *) (PREFETCH_DEFAULT | CMTLB) },
{ .compatible = "qcom,qcm2290-mdss",
.data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
{ .compatible = "qcom,sa8775p-mdss",
---
base-commit: 7080e32d3f09d8688c4a87d81bdcc71f7f606b16
change-id: 20260428-add_glymur_mdss_compatible-44f5b2837498
Best regards,
--
Lokanadha M R <lokanadha.r at oss.qualcomm.com>
More information about the linux-arm-kernel
mailing list