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| author | Chunyan Zhang <chunyan.zhang@unisoc.com> | 2021-03-05 12:32:15 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-03-18 12:50:38 +0300 |
| commit | 13d190ffac9437a3a1af7563bd0befab248b2004 (patch) | |
| tree | 7379cc8400128268cc7a1b654abd202321f97678 /Documentation/devicetree/bindings/iommu | |
| parent | 1e28eed17697bcf343c6743f0028cc3b5dd88bf0 (diff) | |
| download | linux-13d190ffac9437a3a1af7563bd0befab248b2004.tar.xz | |
dt-bindings: iommu: add bindings for sprd IOMMU
This IOMMU module can be used by Unisoc's multimedia devices, such as
display, Image codec(jpeg) and a few signal processors, including
VSP(video), GSP(graphic), ISP(image), and CPP(camera pixel processor), etc.
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Link: https://lore.kernel.org/r/20210305093216.201897-2-zhang.lyra@gmail.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'Documentation/devicetree/bindings/iommu')
| -rw-r--r-- | Documentation/devicetree/bindings/iommu/sprd,iommu.yaml | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iommu/sprd,iommu.yaml b/Documentation/devicetree/bindings/iommu/sprd,iommu.yaml new file mode 100644 index 000000000000..7003e12f55f9 --- /dev/null +++ b/Documentation/devicetree/bindings/iommu/sprd,iommu.yaml @@ -0,0 +1,57 @@ +# 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 + + "#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 + + reg: + maxItems: 1 + + clocks: + description: + Reference to a gate clock phandle, since access to some of IOMMUs are + controlled by gate clock, but this is not required. + +required: + - compatible + - reg + - "#iommu-cells" + +additionalProperties: false + +examples: + - | + iommu_disp: iommu@63000800 { + compatible = "sprd,iommu-v1"; + reg = <0x63000800 0x80>; + #iommu-cells = <0>; + }; + + - | + iommu_jpg: iommu@62300300 { + compatible = "sprd,iommu-v1"; + reg = <0x62300300 0x80>; + #iommu-cells = <0>; + clocks = <&mm_gate 1>; + }; + +... |