xref: /linux/Documentation/devicetree/bindings/media/renesas,fcp.yaml (revision 561add0da6d3d07c9bccb0832fb6ed5619167d26) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/media/renesas,fcp.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Renesas R-Car Frame Compression Processor (FCP)
8
9maintainers:
10  - Laurent Pinchart <laurent.pinchart@ideasonboard.com>
11
12description: |
13  The FCP is a companion module of video processing modules in the Renesas
14  R-Car Gen3 and RZ/G2 SoCs. It provides data compression and decompression,
15  data caching, and conversion of AXI transactions in order to reduce the
16  memory bandwidth.
17
18  There are three types of FCP: FCP for Codec (FCPC), FCP for VSP (FCPV) and
19  FCP for FDP (FCPF). Their configuration and behaviour depend on the module
20  they are paired with. These DT bindings currently support the FCPV and FCPF.
21
22properties:
23  compatible:
24    oneOf:
25      - enum:
26          - renesas,fcpv # FCP for VSP
27          - renesas,fcpf # FCP for FDP
28      - items:
29          - enum:
30              - renesas,r9a07g044-fcpvd # RZ/G2{L,LC}
31              - renesas,r9a07g054-fcpvd # RZ/V2L
32          - const: renesas,fcpv         # Generic FCP for VSP fallback
33
34  reg:
35    maxItems: 1
36
37  clocks: true
38
39  clock-names: true
40
41  iommus:
42    maxItems: 1
43
44  power-domains:
45    maxItems: 1
46
47  resets:
48    maxItems: 1
49
50required:
51  - compatible
52  - reg
53  - clocks
54  - power-domains
55  - resets
56
57additionalProperties: false
58
59allOf:
60  - if:
61      properties:
62        compatible:
63          contains:
64            enum:
65              - renesas,r9a07g044-fcpvd
66              - renesas,r9a07g054-fcpvd
67    then:
68      properties:
69        clocks:
70          items:
71            - description: Main clock
72            - description: Register access clock
73            - description: Video clock
74        clock-names:
75          items:
76            - const: aclk
77            - const: pclk
78            - const: vclk
79      required:
80        - clock-names
81    else:
82      properties:
83        clocks:
84          maxItems: 1
85        clock-names: false
86
87examples:
88  # R8A7795 (R-Car H3) FCP for VSP-D1
89  - |
90    #include <dt-bindings/clock/renesas-cpg-mssr.h>
91    #include <dt-bindings/power/r8a7795-sysc.h>
92
93    fcp@fea2f000 {
94        compatible = "renesas,fcpv";
95        reg = <0xfea2f000 0x200>;
96        clocks = <&cpg CPG_MOD 602>;
97        power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
98        resets = <&cpg 602>;
99        iommus = <&ipmmu_vi0 9>;
100    };
101...
102