From: Chunyan Zhang <chunyan.zhang@xxxxxxxxxx> This patch only adds bindings to support display iommu. The iommu support for others would be added once finished tests with those devices, such as Image codec(jpeg) processor, a few signal processors, including VSP(video), GSP(graphic), ISP(image), and camera CPP, etc. Signed-off-by: Chunyan Zhang <chunyan.zhang@xxxxxxxxxx> --- .../devicetree/bindings/iommu/sprd,iommu.yaml | 44 +++++++++++++++++++ 1 file changed, 44 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..4d9a578a7cc9 --- /dev/null +++ b/Documentation/devicetree/bindings/iommu/sprd,iommu.yaml @@ -0,0 +1,44 @@ +# 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@xxxxxxxxx> + +properties: + compatible: + enum: + - sprd,iommu-disp + + 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-disp"; + reg = <0x63000000 0x880>; + #iommu-cells = <0>; + }; + +... -- 2.25.1
