xref: /linux/Documentation/devicetree/bindings/gpu/host1x/nvidia,tegra234-nvdec.yaml (revision 8a922b7728a93d837954315c98b84f6b78de0c4f) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: "http://devicetree.org/schemas/gpu/host1x/nvidia,tegra234-nvdec.yaml#"
5$schema: "http://devicetree.org/meta-schemas/core.yaml#"
6
7title: NVIDIA Tegra234 NVDEC
8
9description: |
10  NVDEC is the hardware video decoder present on NVIDIA Tegra210
11  and newer chips. It is located on the Host1x bus and typically
12  programmed through Host1x channels.
13
14maintainers:
15  - Thierry Reding <treding@gmail.com>
16  - Mikko Perttunen <mperttunen@nvidia.com>
17
18properties:
19  $nodename:
20    pattern: "^nvdec@[0-9a-f]*$"
21
22  compatible:
23    enum:
24      - nvidia,tegra234-nvdec
25
26  reg:
27    maxItems: 1
28
29  clocks:
30    maxItems: 3
31
32  clock-names:
33    items:
34      - const: nvdec
35      - const: fuse
36      - const: tsec_pka
37
38  resets:
39    maxItems: 1
40
41  reset-names:
42    items:
43      - const: nvdec
44
45  power-domains:
46    maxItems: 1
47
48  iommus:
49    maxItems: 1
50
51  dma-coherent: true
52
53  interconnects:
54    items:
55      - description: DMA read memory client
56      - description: DMA write memory client
57
58  interconnect-names:
59    items:
60      - const: dma-mem
61      - const: write
62
63  nvidia,memory-controller:
64    $ref: /schemas/types.yaml#/definitions/phandle
65    description:
66      phandle to the memory controller for determining information for the NVDEC
67      firmware secure carveout. This carveout is configured by the bootloader and
68      not accessible to CPU.
69
70  nvidia,bl-manifest-offset:
71    $ref: /schemas/types.yaml#/definitions/uint32
72    description:
73      Offset to bootloader manifest from beginning of firmware that was configured by
74      the bootloader.
75
76  nvidia,bl-code-offset:
77    $ref: /schemas/types.yaml#/definitions/uint32
78    description:
79      Offset to bootloader code section from beginning of firmware that was configured by
80      the bootloader.
81
82  nvidia,bl-data-offset:
83    $ref: /schemas/types.yaml#/definitions/uint32
84    description:
85      Offset to bootloader data section from beginning of firmware that was configured by
86      the bootloader.
87
88  nvidia,os-manifest-offset:
89    $ref: /schemas/types.yaml#/definitions/uint32
90    description:
91      Offset to operating system manifest from beginning of firmware that was configured by
92      the bootloader.
93
94  nvidia,os-code-offset:
95    $ref: /schemas/types.yaml#/definitions/uint32
96    description:
97      Offset to operating system code section from beginning of firmware that was configured by
98      the bootloader.
99
100  nvidia,os-data-offset:
101    $ref: /schemas/types.yaml#/definitions/uint32
102    description:
103      Offset to operating system data section from beginning of firmware that was configured
104      by the bootloader.
105
106required:
107  - compatible
108  - reg
109  - clocks
110  - clock-names
111  - resets
112  - reset-names
113  - power-domains
114  - nvidia,memory-controller
115  - nvidia,bl-manifest-offset
116  - nvidia,bl-code-offset
117  - nvidia,bl-data-offset
118  - nvidia,os-manifest-offset
119  - nvidia,os-code-offset
120  - nvidia,os-data-offset
121
122additionalProperties: false
123
124examples:
125  - |
126    #include <dt-bindings/clock/tegra234-clock.h>
127    #include <dt-bindings/memory/tegra234-mc.h>
128    #include <dt-bindings/power/tegra234-powergate.h>
129    #include <dt-bindings/reset/tegra234-reset.h>
130
131    nvdec@15480000 {
132            compatible = "nvidia,tegra234-nvdec";
133            reg = <0x15480000 0x00040000>;
134            clocks = <&bpmp TEGRA234_CLK_NVDEC>,
135                     <&bpmp TEGRA234_CLK_FUSE>,
136                     <&bpmp TEGRA234_CLK_TSEC_PKA>;
137            clock-names = "nvdec", "fuse", "tsec_pka";
138            resets = <&bpmp TEGRA234_RESET_NVDEC>;
139            reset-names = "nvdec";
140            power-domains = <&bpmp TEGRA234_POWER_DOMAIN_NVDEC>;
141            interconnects = <&mc TEGRA234_MEMORY_CLIENT_NVDECSRD &emc>,
142                            <&mc TEGRA234_MEMORY_CLIENT_NVDECSWR &emc>;
143            interconnect-names = "dma-mem", "write";
144            iommus = <&smmu_niso1 TEGRA234_SID_NVDEC>;
145            dma-coherent;
146
147            nvidia,memory-controller = <&mc>;
148
149            /* Placeholder values, to be replaced with values from overlay */
150            nvidia,bl-manifest-offset = <0>;
151            nvidia,bl-data-offset = <0>;
152            nvidia,bl-code-offset = <0>;
153            nvidia,os-manifest-offset = <0>;
154            nvidia,os-data-offset = <0>;
155            nvidia,os-code-offset = <0>;
156    };
157