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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
# Copyright 2019 BayLibre, SAS
%YAML 1.2
---
$id: "http://devicetree.org/schemas/media/amlogic,gx-vdec.yaml#"
$schema: "http://devicetree.org/meta-schemas/core.yaml#"
title: Amlogic Video Decoder
maintainers:
- Neil Armstrong <narmstrong@baylibre.com>
- Maxime Jourdan <mjourdan@baylibre.com>
description: |
The video decoding IP lies within the DOS memory region,
except for the hardware bitstream parser that makes use of an undocumented
region.
It makes use of the following blocks:
- ESPARSER is a bitstream parser that outputs to a VIFIFO. Further VDEC blocks
then feed from this VIFIFO.
- VDEC_1 can decode MPEG-1, MPEG-2, MPEG-4 part 2, MJPEG, H.263, H.264, VC-1.
- VDEC_HEVC can decode HEVC and VP9.
Both VDEC_1 and VDEC_HEVC share the "vdec" IRQ and as such cannot run
concurrently.
properties:
compatible:
oneOf:
- items:
- enum:
- amlogic,gxbb-vdec # GXBB (S905)
- amlogic,gxl-vdec # GXL (S905X, S905D)
- amlogic,gxm-vdec # GXM (S912)
- const: amlogic,gx-vdec
- enum:
- amlogic,g12a-vdec # G12A (S905X2, S905D2)
- amlogic,sm1-vdec # SM1 (S905X3, S905D3)
interrupts:
minItems: 2
interrupt-names:
items:
- const: vdec
- const: esparser
reg:
minItems: 2
reg-names:
items:
- const: dos
- const: esparser
resets:
maxItems: 1
reset-names:
items:
- const: esparser
clocks:
minItems: 4
maxItems: 5
clock-names:
minItems: 4
maxItems: 5
items:
- const: dos_parser
- const: dos
- const: vdec_1
- const: vdec_hevc
- const: vdec_hevcf
amlogic,ao-sysctrl:
description: should point to the AOBUS sysctrl node
allOf:
- $ref: /schemas/types.yaml#/definitions/phandle
amlogic,canvas:
description: should point to a canvas provider node
allOf:
- $ref: /schemas/types.yaml#/definitions/phandle
allOf:
- if:
properties:
compatible:
contains:
enum:
- amlogic,gx-vdec
then:
properties:
clock-names:
maxItems: 4
- if:
properties:
compatible:
contains:
enum:
- amlogic,g12a-vdec
- amlogic,sm1-vdec
then:
properties:
clock-names:
minItems: 5
required:
- compatible
- reg
- reg-names
- interrupts
- interrupt-names
- clocks
- clock-names
- resets
- reset-names
- amlogic,ao-sysctrl
- amlogic,canvas
examples:
- |
vdec: video-decoder@c8820000 {
compatible = "amlogic,gxl-vdec", "amlogic,gx-vdec";
reg = <0xc8820000 0x10000>, <0xc110a580 0xe4>;
reg-names = "dos", "esparser";
interrupts = <44>, <32>;
interrupt-names = "vdec", "esparser";
clocks = <&clk_dos_parser> ,<&clk_dos>, <&clk_vdec_1>, <&clk_vdec_hevc>;
clock-names = "dos_parser", "dos", "vdec_1", "vdec_hevc";
resets = <&reset_parser>;
reset-names = "esparser";
amlogic,ao-sysctrl = <&sysctrl_AO>;
amlogic,canvas = <&canvas>;
};
|
