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08cdb85b85
The resets and iommus properties are used in DT sources in the kernel tree. Document them, and make resets mandatory. The iommus property is optional as not all platforms wire the FCP to a functional IOMMU. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
66 lines
1.5 KiB
YAML
66 lines
1.5 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/media/renesas,fcp.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Renesas R-Car Frame Compression Processor (FCP)
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maintainers:
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- Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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description: |
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The FCP is a companion module of video processing modules in the Renesas
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R-Car Gen3 and RZ/G2 SoCs. It provides data compression and decompression,
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data caching, and conversion of AXI transactions in order to reduce the
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memory bandwidth.
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There are three types of FCP: FCP for Codec (FCPC), FCP for VSP (FCPV) and
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FCP for FDP (FCPF). Their configuration and behaviour depend on the module
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they are paired with. These DT bindings currently support the FCPV and FCPF.
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properties:
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compatible:
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enum:
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- renesas,fcpv # FCP for VSP
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- renesas,fcpf # FCP for FDP
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reg:
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maxItems: 1
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clocks:
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maxItems: 1
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iommus:
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maxItems: 1
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power-domains:
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maxItems: 1
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resets:
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maxItems: 1
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required:
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- compatible
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- reg
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- clocks
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- power-domains
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- resets
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additionalProperties: false
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examples:
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# R8A7795 (R-Car H3) FCP for VSP-D1
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- |
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#include <dt-bindings/clock/renesas-cpg-mssr.h>
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#include <dt-bindings/power/r8a7795-sysc.h>
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fcp@fea2f000 {
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compatible = "renesas,fcpv";
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reg = <0xfea2f000 0x200>;
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clocks = <&cpg CPG_MOD 602>;
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power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
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resets = <&cpg 602>;
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iommus = <&ipmmu_vi0 9>;
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};
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...
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