linux-kernel - [PATCH v5 05/22] dt-bindings: qcom-bam: Add 'iommus' to optional properties

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Message-Id: <20211110105922.217895-6-bhupesh.sharma@linaro.org>
Date:   Wed, 10 Nov 2021 16:29:05 +0530
From:   Bhupesh Sharma <bhupesh.sharma@...aro.org>
To:     linux-arm-msm@...r.kernel.org, linux-crypto@...r.kernel.org
Cc:     bhupesh.sharma@...aro.org, bhupesh.linux@...il.com,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        robh+dt@...nel.org, agross@...nel.org, herbert@...dor.apana.org.au,
        davem@...emloft.net, stephan@...hold.net,
        Thara Gopinath <thara.gopinath@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Subject: [PATCH v5 05/22] dt-bindings: qcom-bam: Add 'iommus' to optional properties

Add 'optional' property - 'iommus' to the
device-tree binding documentation for qcom-bam DMA IP.

This property describes the phandle(s) to apps_smmu node
with sid mask.

Cc: Thara Gopinath <thara.gopinath@...aro.org>
Cc: Bjorn Andersson <bjorn.andersson@...aro.org>
Cc: Rob Herring <robh+dt@...nel.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@...aro.org>
---
 .../devicetree/bindings/dma/qcom_bam_dma.yaml          | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/dma/qcom_bam_dma.yaml b/Documentation/devicetree/bindings/dma/qcom_bam_dma.yaml
index 20e734448c1f..cfff3a2286fb 100644
--- a/Documentation/devicetree/bindings/dma/qcom_bam_dma.yaml
+++ b/Documentation/devicetree/bindings/dma/qcom_bam_dma.yaml
@@ -53,6 +53,12 @@ properties:
   interconnect-names:
     const: memory
 
+  iommus:
+    minItems: 1
+    maxItems: 8
+    description:
+      phandle(s) to apps_smmu node with sid mask.
+
   qcom,ee:
     $ref: /schemas/types.yaml#/definitions/uint32
     minimum: 0
@@ -96,4 +102,8 @@ examples:
         clock-names = "bam_clk";
         #dma-cells = <1>;
         qcom,ee = <0>;
+        iommus = <&apps_smmu 0x584 0x0011>,
+                 <&apps_smmu 0x586 0x0011>,
+                 <&apps_smmu 0x594 0x0011>,
+                 <&apps_smmu 0x596 0x0011>;
     };
-- 
2.31.1