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[v4,06/20] dt-bindings: qcom-bam: Add 'iommus' to optional properties

Message ID 20211013105541.68045-7-bhupesh.sharma@linaro.org (mailing list archive)
State Changes Requested
Delegated to: Herbert Xu
Headers show
Series Enable Qualcomm Crypto Engine on sm8250 | expand

Commit Message

Bhupesh Sharma Oct. 13, 2021, 10:55 a.m. UTC 
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@linaro.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
---
 .../devicetree/bindings/dma/qcom_bam_dma.yaml          | 10 ++++++++++
 1 file changed, 10 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/dma/qcom_bam_dma.yaml b/Documentation/devicetree/bindings/dma/qcom_bam_dma.yaml
index 602e68df971f..7c046a281fcd 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
     description:
@@ -94,4 +100,8 @@  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>;
     };