116 lines
2.9 KiB
YAML
116 lines
2.9 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/sound/nvidia,tegra210-i2s.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: Tegra210 I2S Controller
|
|
|
|
description: |
|
|
The Inter-IC Sound (I2S) controller implements full-duplex,
|
|
bi-directional and single direction point-to-point serial
|
|
interfaces. It can interface with I2S compatible devices.
|
|
I2S controller can operate both in master and slave mode.
|
|
|
|
maintainers:
|
|
- Jon Hunter <jonathanh@nvidia.com>
|
|
- Sameer Pujar <spujar@nvidia.com>
|
|
|
|
allOf:
|
|
- $ref: name-prefix.yaml#
|
|
|
|
properties:
|
|
$nodename:
|
|
pattern: "^i2s@[0-9a-f]*$"
|
|
|
|
compatible:
|
|
oneOf:
|
|
- const: nvidia,tegra210-i2s
|
|
- items:
|
|
- enum:
|
|
- nvidia,tegra234-i2s
|
|
- nvidia,tegra194-i2s
|
|
- nvidia,tegra186-i2s
|
|
- const: nvidia,tegra210-i2s
|
|
|
|
reg:
|
|
maxItems: 1
|
|
|
|
clocks:
|
|
minItems: 1
|
|
items:
|
|
- description: I2S bit clock
|
|
- description:
|
|
Sync input clock, which can act as clock source to other I/O
|
|
modules in AHUB. The Tegra I2S driver sets this clock rate as
|
|
per bit clock rate. I/O module which wants to use this clock
|
|
as source, can mention this clock as parent in the DT bindings.
|
|
This is an optional clock entry, since it is only required when
|
|
some other I/O wants to reference from a particular I2Sx
|
|
instance.
|
|
|
|
clock-names:
|
|
minItems: 1
|
|
items:
|
|
- const: i2s
|
|
- const: sync_input
|
|
|
|
assigned-clocks:
|
|
minItems: 1
|
|
maxItems: 2
|
|
|
|
assigned-clock-parents:
|
|
minItems: 1
|
|
maxItems: 2
|
|
|
|
assigned-clock-rates:
|
|
minItems: 1
|
|
maxItems: 2
|
|
|
|
sound-name-prefix:
|
|
pattern: "^I2S[1-9]$"
|
|
|
|
ports:
|
|
$ref: /schemas/graph.yaml#/properties/ports
|
|
properties:
|
|
port@0:
|
|
$ref: audio-graph-port.yaml#
|
|
unevaluatedProperties: false
|
|
description: |
|
|
I2S ACIF (Audio Client Interface) port connected to the
|
|
corresponding AHUB (Audio Hub) ACIF port.
|
|
|
|
port@1:
|
|
$ref: audio-graph-port.yaml#
|
|
unevaluatedProperties: false
|
|
description: |
|
|
I2S DAP (Digital Audio Port) interface which can be connected
|
|
to external audio codec for playback or capture.
|
|
|
|
required:
|
|
- compatible
|
|
- reg
|
|
- clocks
|
|
- clock-names
|
|
- assigned-clocks
|
|
- assigned-clock-parents
|
|
|
|
additionalProperties: false
|
|
|
|
examples:
|
|
- |
|
|
#include<dt-bindings/clock/tegra210-car.h>
|
|
|
|
i2s@702d1000 {
|
|
compatible = "nvidia,tegra210-i2s";
|
|
reg = <0x702d1000 0x100>;
|
|
clocks = <&tegra_car TEGRA210_CLK_I2S0>;
|
|
clock-names = "i2s";
|
|
assigned-clocks = <&tegra_car TEGRA210_CLK_I2S0>;
|
|
assigned-clock-parents = <&tegra_car TEGRA210_CLK_PLL_A_OUT0>;
|
|
assigned-clock-rates = <1536000>;
|
|
sound-name-prefix = "I2S1";
|
|
};
|
|
|
|
...
|