From: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
To: Will Deacon <will@kernel.org>, Joerg Roedel <joro@8bytes.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Robin Murphy <Robin.Murphy@arm.com>
Cc: Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel@lists.infradead.org, iommu@lists.linux.dev,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
Subject: [PATCH] dt-bindings: arm-smmu: qcom: Constrain clocks for Hawi SoC
Date: Wed, 20 May 2026 13:04:47 +0530 [thread overview]
Message-ID: <20260520073447.2138384-1-mukesh.ojha@oss.qualcomm.com> (raw)
The Hawi SoC has two SMMU instances with different clock requirements.
The Adreno GPU SMMU uses the qcom,adreno-smmu fallback and requires a
single HLOS vote clock, matching the pattern already established for
Glymur and SM8750. The Application Processor SMMU (APSS) uses the
qcom,smmu-500 fallback and has no controllable clocks.
Add qcom,hawi-smmu-500 to the single-clock constraint block for the
Adreno GPU SMMU and to the no-clocks constraint block for the APSS SMMU,
following the pattern how it is done for other SoCs.
Signed-off-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
---
This patch is on based on arm/smmu/bindings branch here in
https://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux.git
Documentation/devicetree/bindings/iommu/arm,smmu.yaml | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
index 25fd3efa2420..e413564ce55d 100644
--- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
+++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
@@ -570,6 +570,7 @@ allOf:
items:
- enum:
- qcom,glymur-smmu-500
+ - qcom,hawi-smmu-500
- qcom,sm8750-smmu-500
- const: qcom,adreno-smmu
- const: qcom,smmu-500
@@ -616,6 +617,7 @@ allOf:
- enum:
- qcom,eliza-smmu-500
- qcom,glymur-smmu-500
+ - qcom,hawi-smmu-500
- qcom,kaanapali-smmu-500
- qcom,milos-smmu-500
- qcom,qcs615-smmu-500
--
2.53.0
next reply other threads:[~2026-05-20 7:35 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-20 7:34 Mukesh Ojha [this message]
2026-05-20 10:57 ` [PATCH] dt-bindings: arm-smmu: qcom: Constrain clocks for Hawi SoC Krzysztof Kozlowski
2026-05-20 12:37 ` Mukesh Ojha
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