linux-kernel - [PATCH v6 2/4] dt-bindings: iommu: rockchip: Add compatible for v2

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Date:   Fri, 21 May 2021 15:40:26 +0200
From:   Benjamin Gaignard <benjamin.gaignard@...labora.com>
To:     joro@...tes.org, will@...nel.org, robh+dt@...nel.org,
        heiko@...ech.de, xxm@...k-chips.com, robin.murphy@....com
Cc:     iommu@...ts.linux-foundation.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel@...labora.com,
        Benjamin Gaignard <benjamin.gaignard@...labora.com>,
        Rob Herring <robh@...nel.org>
Subject: [PATCH v6 2/4] dt-bindings: iommu: rockchip: Add compatible for v2

Add compatible for the second version of IOMMU hardware block.
RK356x IOMMU can also be link to a power domain.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...labora.com>
Reviewed-by: Rob Herring <robh@...nel.org>
Reviewed-by: Heiko Stuebner <heiko@...ech.de>
---
 .../devicetree/bindings/iommu/rockchip,iommu.yaml          | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/iommu/rockchip,iommu.yaml b/Documentation/devicetree/bindings/iommu/rockchip,iommu.yaml
index 099fc2578b54..d2e28a9e3545 100644
--- a/Documentation/devicetree/bindings/iommu/rockchip,iommu.yaml
+++ b/Documentation/devicetree/bindings/iommu/rockchip,iommu.yaml
@@ -19,7 +19,9 @@ description: |+
 
 properties:
   compatible:
-    const: rockchip,iommu
+    enum:
+      - rockchip,iommu
+      - rockchip,rk3568-iommu
 
   reg:
     items:
@@ -48,6 +50,9 @@ properties:
   "#iommu-cells":
     const: 0
 
+  power-domains:
+    maxItems: 1
+
   rockchip,disable-mmu-reset:
     $ref: /schemas/types.yaml#/definitions/flag
     description: |
-- 
2.25.1