linux-kernel - [PATCH v2 1/6] dt-bindings: iommu: sun50i: Add compatible for Allwinner D1

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Message-Id: <20230103010903.11181-2-samuel@sholland.org>
Date:   Mon,  2 Jan 2023 19:08:58 -0600
From:   Samuel Holland <samuel@...lland.org>
To:     Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     iommu@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Maxime Ripard <mripard@...nel.org>,
        Samuel Holland <samuel@...lland.org>
Subject: [PATCH v2 1/6] dt-bindings: iommu: sun50i: Add compatible for Allwinner D1

D1 contains an IOMMU similar to the one in the H6 SoC, but the D1
variant has no external reset signal.

Signed-off-by: Samuel Holland <samuel@...lland.org>
---

Changes in v2:
 - Disallow the 'resets' property for the D1 variant

 .../iommu/allwinner,sun50i-h6-iommu.yaml      | 20 +++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/iommu/allwinner,sun50i-h6-iommu.yaml b/Documentation/devicetree/bindings/iommu/allwinner,sun50i-h6-iommu.yaml
index e20016f12017..5aeea10cf899 100644
--- a/Documentation/devicetree/bindings/iommu/allwinner,sun50i-h6-iommu.yaml
+++ b/Documentation/devicetree/bindings/iommu/allwinner,sun50i-h6-iommu.yaml
@@ -17,7 +17,9 @@ properties:
       The content of the cell is the master ID.
 
   compatible:
-    const: allwinner,sun50i-h6-iommu
+    enum:
+      - allwinner,sun20i-d1-iommu
+      - allwinner,sun50i-h6-iommu
 
   reg:
     maxItems: 1
@@ -37,7 +39,21 @@ required:
   - reg
   - interrupts
   - clocks
-  - resets
+
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - allwinner,sun50i-h6-iommu
+
+then:
+  required:
+    - resets
+
+else:
+  properties:
+    resets: false
 
 additionalProperties: false
 
-- 
2.37.4