157 lines
4.2 KiB
YAML
157 lines
4.2 KiB
YAML
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# 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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$id: "http://devicetree.org/schemas/gpu/host1x/nvidia,tegra234-nvdec.yaml#"
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$schema: "http://devicetree.org/meta-schemas/core.yaml#"
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title: NVIDIA Tegra234 NVDEC
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description: |
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NVDEC is the hardware video decoder present on NVIDIA Tegra210
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and newer chips. It is located on the Host1x bus and typically
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programmed through Host1x channels.
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maintainers:
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- Thierry Reding <treding@gmail.com>
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- Mikko Perttunen <mperttunen@nvidia.com>
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properties:
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$nodename:
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pattern: "^nvdec@[0-9a-f]*$"
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compatible:
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enum:
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- nvidia,tegra234-nvdec
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reg:
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maxItems: 1
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clocks:
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maxItems: 3
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clock-names:
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items:
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- const: nvdec
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- const: fuse
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- const: tsec_pka
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resets:
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maxItems: 1
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reset-names:
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items:
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- const: nvdec
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power-domains:
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maxItems: 1
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iommus:
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maxItems: 1
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dma-coherent: true
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interconnects:
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items:
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- description: DMA read memory client
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- description: DMA write memory client
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interconnect-names:
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items:
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- const: dma-mem
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- const: write
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nvidia,memory-controller:
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$ref: /schemas/types.yaml#/definitions/phandle
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description:
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phandle to the memory controller for determining information for the NVDEC
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firmware secure carveout. This carveout is configured by the bootloader and
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not accessible to CPU.
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nvidia,bl-manifest-offset:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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Offset to bootloader manifest from beginning of firmware that was configured by
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the bootloader.
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nvidia,bl-code-offset:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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Offset to bootloader code section from beginning of firmware that was configured by
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the bootloader.
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nvidia,bl-data-offset:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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Offset to bootloader data section from beginning of firmware that was configured by
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the bootloader.
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nvidia,os-manifest-offset:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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Offset to operating system manifest from beginning of firmware that was configured by
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the bootloader.
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nvidia,os-code-offset:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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Offset to operating system code section from beginning of firmware that was configured by
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the bootloader.
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nvidia,os-data-offset:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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Offset to operating system data section from beginning of firmware that was configured
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by the bootloader.
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required:
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- compatible
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- reg
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- clocks
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- clock-names
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- resets
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- reset-names
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- power-domains
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- nvidia,memory-controller
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- nvidia,bl-manifest-offset
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- nvidia,bl-code-offset
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- nvidia,bl-data-offset
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- nvidia,os-manifest-offset
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- nvidia,os-code-offset
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- nvidia,os-data-offset
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/tegra234-clock.h>
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#include <dt-bindings/memory/tegra234-mc.h>
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#include <dt-bindings/power/tegra234-powergate.h>
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#include <dt-bindings/reset/tegra234-reset.h>
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nvdec@15480000 {
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compatible = "nvidia,tegra234-nvdec";
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reg = <0x15480000 0x00040000>;
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clocks = <&bpmp TEGRA234_CLK_NVDEC>,
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<&bpmp TEGRA234_CLK_FUSE>,
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<&bpmp TEGRA234_CLK_TSEC_PKA>;
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clock-names = "nvdec", "fuse", "tsec_pka";
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resets = <&bpmp TEGRA234_RESET_NVDEC>;
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reset-names = "nvdec";
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power-domains = <&bpmp TEGRA234_POWER_DOMAIN_NVDEC>;
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interconnects = <&mc TEGRA234_MEMORY_CLIENT_NVDECSRD &emc>,
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<&mc TEGRA234_MEMORY_CLIENT_NVDECSWR &emc>;
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interconnect-names = "dma-mem", "write";
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iommus = <&smmu_niso1 TEGRA234_SID_NVDEC>;
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dma-coherent;
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nvidia,memory-controller = <&mc>;
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/* Placeholder values, to be replaced with values from overlay */
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nvidia,bl-manifest-offset = <0>;
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nvidia,bl-data-offset = <0>;
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nvidia,bl-code-offset = <0>;
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nvidia,os-manifest-offset = <0>;
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nvidia,os-data-offset = <0>;
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nvidia,os-code-offset = <0>;
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};
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