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|
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: "http://devicetree.org/schemas/gpu/host1x/nvidia,tegra234-nvdec.yaml#"
$schema: "http://devicetree.org/meta-schemas/core.yaml#"
title: Device tree binding for NVIDIA Tegra234 NVDEC
description: |
NVDEC is the hardware video decoder present on NVIDIA Tegra210
and newer chips. It is located on the Host1x bus and typically
programmed through Host1x channels.
maintainers:
- Thierry Reding <treding@gmail.com>
- Mikko Perttunen <mperttunen@nvidia.com>
properties:
$nodename:
pattern: "^nvdec@[0-9a-f]*$"
compatible:
enum:
- nvidia,tegra234-nvdec
reg:
maxItems: 1
clocks:
maxItems: 3
clock-names:
items:
- const: nvdec
- const: fuse
- const: tsec_pka
resets:
maxItems: 1
reset-names:
items:
- const: nvdec
power-domains:
maxItems: 1
iommus:
maxItems: 1
dma-coherent: true
interconnects:
items:
- description: DMA read memory client
- description: DMA write memory client
interconnect-names:
items:
- const: dma-mem
- const: write
nvidia,memory-controller:
$ref: /schemas/types.yaml#/definitions/phandle
description:
phandle to the memory controller for determining information for the NVDEC
firmware secure carveout. This carveout is configured by the bootloader and
not accessible to CPU.
nvidia,bl-manifest-offset:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Offset to bootloader manifest from beginning of firmware that was configured by
the bootloader.
nvidia,bl-code-offset:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Offset to bootloader code section from beginning of firmware that was configured by
the bootloader.
nvidia,bl-data-offset:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Offset to bootloader data section from beginning of firmware that was configured by
the bootloader.
nvidia,os-manifest-offset:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Offset to operating system manifest from beginning of firmware that was configured by
the bootloader.
nvidia,os-code-offset:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Offset to operating system code section from beginning of firmware that was configured by
the bootloader.
nvidia,os-data-offset:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Offset to operating system data section from beginning of firmware that was configured
by the bootloader.
required:
- compatible
- reg
- clocks
- clock-names
- resets
- reset-names
- power-domains
- nvidia,memory-controller
- nvidia,bl-manifest-offset
- nvidia,bl-code-offset
- nvidia,bl-data-offset
- nvidia,os-manifest-offset
- nvidia,os-code-offset
- nvidia,os-data-offset
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/tegra234-clock.h>
#include <dt-bindings/memory/tegra234-mc.h>
#include <dt-bindings/power/tegra234-powergate.h>
#include <dt-bindings/reset/tegra234-reset.h>
nvdec@15480000 {
compatible = "nvidia,tegra234-nvdec";
reg = <0x15480000 0x00040000>;
clocks = <&bpmp TEGRA234_CLK_NVDEC>,
<&bpmp TEGRA234_CLK_FUSE>,
<&bpmp TEGRA234_CLK_TSEC_PKA>;
clock-names = "nvdec", "fuse", "tsec_pka";
resets = <&bpmp TEGRA234_RESET_NVDEC>;
reset-names = "nvdec";
power-domains = <&bpmp TEGRA234_POWER_DOMAIN_NVDEC>;
interconnects = <&mc TEGRA234_MEMORY_CLIENT_NVDECSRD &emc>,
<&mc TEGRA234_MEMORY_CLIENT_NVDECSWR &emc>;
interconnect-names = "dma-mem", "write";
iommus = <&smmu_niso1 TEGRA234_SID_NVDEC>;
dma-coherent;
nvidia,memory-controller = <&mc>;
/* Placeholder values, to be replaced with values from overlay */
nvidia,bl-manifest-offset = <0>;
nvidia,bl-data-offset = <0>;
nvidia,bl-code-offset = <0>;
nvidia,os-manifest-offset = <0>;
nvidia,os-data-offset = <0>;
nvidia,os-code-offset = <0>;
};
|
