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|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/nvidia,tegra210-admaif.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Tegra210 ADMAIF Device Tree Bindings
description: |
ADMAIF is the interface between ADMA and AHUB. Each ADMA channel
that sends/receives data to/from AHUB must interface through an
ADMAIF channel. ADMA channel sending data to AHUB pairs with ADMAIF
Tx channel and ADMA channel receiving data from AHUB pairs with
ADMAIF Rx channel.
maintainers:
- Jon Hunter <jonathanh@nvidia.com>
- Sameer Pujar <spujar@nvidia.com>
allOf:
- $ref: audio-graph-port.yaml#
properties:
$nodename:
pattern: "^admaif@[0-9a-f]*$"
compatible:
oneOf:
- enum:
- nvidia,tegra210-admaif
- nvidia,tegra186-admaif
- items:
- const: nvidia,tegra194-admaif
- const: nvidia,tegra186-admaif
reg:
maxItems: 1
dmas: true
dma-names: true
ports:
description: |
Contains list of ACIF (Audio CIF) port nodes for ADMAIF channels.
The number of port nodes depends on the number of ADMAIF channels
that SoC may have. These are interfaced with respective ACIF ports
in AHUB (Audio Hub). Each port is capable of data transfers in
both directions.
if:
properties:
compatible:
contains:
const: nvidia,tegra210-admaif
then:
properties:
dmas:
description:
DMA channel specifiers, equally divided for Tx and Rx.
minItems: 1
maxItems: 20
dma-names:
items:
pattern: "^[rt]x(10|[1-9])$"
description:
Should be "rx1", "rx2" ... "rx10" for DMA Rx channel
Should be "tx1", "tx2" ... "tx10" for DMA Tx channel
minItems: 1
maxItems: 20
else:
properties:
dmas:
description:
DMA channel specifiers, equally divided for Tx and Rx.
minItems: 1
maxItems: 40
dma-names:
items:
pattern: "^[rt]x(1[0-9]|[1-9]|20)$"
description:
Should be "rx1", "rx2" ... "rx20" for DMA Rx channel
Should be "tx1", "tx2" ... "tx20" for DMA Tx channel
minItems: 1
maxItems: 40
required:
- compatible
- reg
- dmas
- dma-names
unevaluatedProperties: false
examples:
- |
admaif@702d0000 {
compatible = "nvidia,tegra210-admaif";
reg = <0x702d0000 0x800>;
dmas = <&adma 1>, <&adma 1>,
<&adma 2>, <&adma 2>,
<&adma 3>, <&adma 3>,
<&adma 4>, <&adma 4>,
<&adma 5>, <&adma 5>,
<&adma 6>, <&adma 6>,
<&adma 7>, <&adma 7>,
<&adma 8>, <&adma 8>,
<&adma 9>, <&adma 9>,
<&adma 10>, <&adma 10>;
dma-names = "rx1", "tx1",
"rx2", "tx2",
"rx3", "tx3",
"rx4", "tx4",
"rx5", "tx5",
"rx6", "tx6",
"rx7", "tx7",
"rx8", "tx8",
"rx9", "tx9",
"rx10", "tx10";
};
...
|
