On Wed, Dec 23, 2020 at 07:16:32PM +0800, Chunyan Zhang wrote: > From: Chunyan Zhang <chunyan.zhang@xxxxxxxxxx> > > This patch only adds bindings to support display 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 Needs to be Soc specific. Is this block specific to display subsys or that just happens to be where the instance is? > + > + 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 >
