linux-kernel - [PATCH v9 3/4] dt-bindings: arm-smmu: add binding for Tegra194 SMMU

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Message-ID: <20200630235752.8737-4-vdumpa@nvidia.com>
Date:   Tue, 30 Jun 2020 16:57:51 -0700
From:   Krishna Reddy <vdumpa@...dia.com>
To:     <joro@...tes.org>, <will@...nel.org>, <robin.murphy@....com>,
        <robh+dt@...nel.org>, <treding@...dia.com>, <jonathanh@...dia.com>
CC:     <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <yhsu@...dia.com>,
        <snikam@...dia.com>, <praithatha@...dia.com>, <talho@...dia.com>,
        <bbiswas@...dia.com>, <mperttunen@...dia.com>,
        <nicolinc@...dia.com>, <bhuntsman@...dia.com>,
        <nicoleotsuka@...il.com>, Krishna Reddy <vdumpa@...dia.com>
Subject: [PATCH v9 3/4] dt-bindings: arm-smmu: add binding for Tegra194 SMMU

Add binding for NVIDIA's Tegra194 SoC SMMU topology that is based
on ARM MMU-500.

Signed-off-by: Krishna Reddy <vdumpa@...dia.com>
---
 .../devicetree/bindings/iommu/arm,smmu.yaml    | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
index d7ceb4c34423b..662c46e16f07d 100644
--- a/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
+++ b/Documentation/devicetree/bindings/iommu/arm,smmu.yaml
@@ -38,6 +38,11 @@ properties:
               - qcom,sc7180-smmu-500
               - qcom,sdm845-smmu-500
           - const: arm,mmu-500
+      - description: NVIDIA SoCs that use more than one "arm,mmu-500"
+        items:
+          - enum:
+              - nvidia,tegra194-smmu
+          - const: arm,mmu-500
       - items:
           - const: arm,mmu-500
           - const: arm,smmu-v2
@@ -138,6 +143,19 @@ required:
 
 additionalProperties: false
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - nvidia,tegra194-smmu
+    then:
+      properties:
+        reg:
+          minItems: 2
+          maxItems: 3
+
 examples:
   - |+
     /* SMMU with stream matching or stream indexing */
-- 
2.26.2