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From:   Chunyan Zhang <zhang.lyra@gmail.com>
To:     Joerg Roedel <joro@8bytes.org>, Rob Herring <robh+dt@kernel.org>,
        Robin Murphy <robin.murphy@arm.com>
Cc:     iommu@lists.linux-foundation.org, devicetree@vger.kernel.org,
        Baolin Wang <baolin.wang7@gmail.com>,
        linux-kernel@vger.kernel.org, Orson Zhai <orsonzhai@gmail.com>,
        Chunyan Zhang <zhang.lyra@gmail.com>,
        Sheng Xu <sheng.xu@unisoc.com>,
        Kevin Tang <kevin.tang@unisoc.com>,
        Chunyan Zhang <chunyan.zhang@unisoc.com>
Subject: [PATCH v1 1/2] dt-bindings: iommu: add bindings for sprd iommu
Date:   Thu, 21 Jan 2021 19:23:48 +0800
Message-Id: <20210121112349.421464-2-zhang.lyra@gmail.com>
In-Reply-To: <20210121112349.421464-1-zhang.lyra@gmail.com>
References: <20210121112349.421464-1-zhang.lyra@gmail.com>
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From: Chunyan Zhang <chunyan.zhang@unisoc.com>

This patch adds bindings to support display and Image codec(jpeg) iommu
instance.

The iommu support for others would be added once finished tests with those
devices, such as a few signal processors, including VSP(video),
GSP(graphic), ISP(image), and camera CPP, etc.

Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
---
 .../devicetree/bindings/iommu/sprd,iommu.yaml | 45 +++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iommu/sprd,iommu.yaml

diff --git a/Documentation/devicetree/bindings/iommu/sprd,iommu.yaml b/Documentation/devicetree/bindings/iommu/sprd,iommu.yaml
new file mode 100644
index 000000000000..4b912857c112
--- /dev/null
+++ b/Documentation/devicetree/bindings/iommu/sprd,iommu.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2020 Unisoc Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iommu/sprd,iommu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Unisoc IOMMU and Multi-media MMU
+
+maintainers:
+  - Chunyan Zhang <zhang.lyra@gmail.com>
+
+properties:
+  compatible:
+    enum:
+      - sprd,iommu-v1-disp
+      - sprd,iommu-v1-jpg
+
+  reg:
+    maxItems: 1
+
+  "#iommu-cells":
+    const: 0
+    description:
+      Unisoc IOMMUs are all single-master IOMMU devices, therefore no
+      additional information needs to associate with its master device.
+      Please refer to the generic bindings document for more details,
+      Documentation/devicetree/bindings/iommu/iommu.txt
+
+required:
+  - compatible
+  - reg
+  - "#iommu-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    iommu_disp: iommu@63000000 {
+      compatible = "sprd,iommu-v1-disp";
+      reg = <0x63000000 0x880>;
+      #iommu-cells = <0>;
+    };
+
+...
-- 
2.25.1