From: Charan Teja Kalla <charan.kalla@oss.qualcomm.com>
To: konrad.dybcio@oss.qualcomm.com, robin.clark@oss.qualcomm.com,
will@kernel.org, robin.murphy@arm.com, joro@8bytes.org,
dmitry.baryshkov@oss.qualcomm.com
Cc: iommu@lists.linux.dev, linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Charan Teja Kalla <charan.kalla@oss.qualcomm.com>
Subject: [PATCH V3] iommu/arm-smmu: add actlr settings for mdss on Qualcomm platforms
Date: Mon, 24 Nov 2025 22:40:30 +0530 [thread overview]
Message-ID: <20251124171030.323989-1-charan.kalla@oss.qualcomm.com> (raw)
Add ACTLR settings for missing MDSS devices on Qualcomm platforms.
These are QoS settings and are specific to per SoC thus different
settings, eg: some have shallow prefetch while others have no
prefetch.
Signed-off-by: Charan Teja Kalla <charan.kalla@oss.qualcomm.com>
---
Changes from V2:
1) Add actlr settings for all the mdss devices on Qualcomm platforms.
2) Improved the commit message that explain why different ACTLR
settings
https://lore.kernel.org/lkml/20251118171822.3539062-1-charan.kalla@oss.qualcomm.com/#t
Changes from V1:
1) Added actlr setting only for MDSS and dropped for fastrpc. --
konrad
2) ACTLR table is updated per alphanumeric order -- konrad
https://lore.kernel.org/all/20251105075307.1658329-1-charan.kalla@oss.qualcomm.com/
drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
index c21a401c71eb..ead1a59d40ae 100644
--- a/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c
@@ -41,12 +41,34 @@ 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,qcm2290-mdss",
+ .data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
{ .compatible = "qcom,sc7280-mdss",
.data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
{ .compatible = "qcom,sc7280-venus",
.data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
+ { .compatible = "qcom,sc8180x-mdss",
+ .data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
+ { .compatible = "qcom,sm6125-mdss",
+ .data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
+ { .compatible = "qcom,sm6350-mdss",
+ .data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
+ { .compatible = "qcom,sm8150-mdss",
+ .data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
+ { .compatible = "qcom,sm8250-mdss",
+ .data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
+ { .compatible = "qcom,sm8350-mdss",
+ .data = (const void *) (PREFETCH_SHALLOW | CPRE | CMTLB) },
+ { .compatible = "qcom,sm8450-mdss",
+ .data = (const void *) (PREFETCH_DEFAULT | CMTLB) },
{ .compatible = "qcom,sm8550-mdss",
.data = (const void *) (PREFETCH_DEFAULT | CMTLB) },
+ { .compatible = "qcom,sm8650-mdss",
+ .data = (const void *) (PREFETCH_DEFAULT | CMTLB) },
+ { .compatible = "qcom,sm8750-mdss",
+ .data = (const void *) (PREFETCH_DEFAULT | CMTLB) },
+ { .compatible = "qcom,x1e80100-mdss",
+ .data = (const void *) (PREFETCH_DEFAULT | CMTLB) },
{ }
};
--
2.34.1
next reply other threads:[~2025-11-24 17:11 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-24 17:10 Charan Teja Kalla [this message]
2025-11-26 1:51 ` Dmitry Baryshkov
2025-11-26 11:36 ` Charan Teja Kalla
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