110 lines
3.1 KiB
YAML
110 lines
3.1 KiB
YAML
|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
||
|
|
%YAML 1.2
|
||
|
|
---
|
||
|
|
$id: http://devicetree.org/schemas/sound/fsl,rpmsg.yaml#
|
||
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
||
|
|
|
||
|
|
title: NXP Audio RPMSG CPU DAI Controller
|
||
|
|
|
||
|
|
maintainers:
|
||
|
|
- Shengjiu Wang <shengjiu.wang@nxp.com>
|
||
|
|
|
||
|
|
description: |
|
||
|
|
fsl_rpmsg is a virtual audio device. Mapping to real hardware devices
|
||
|
|
are SAI, DMA controlled by Cortex M core. What we see from Linux
|
||
|
|
side is a device which provides audio service by rpmsg channel.
|
||
|
|
|
||
|
|
properties:
|
||
|
|
compatible:
|
||
|
|
enum:
|
||
|
|
- fsl,imx7ulp-rpmsg-audio
|
||
|
|
- fsl,imx8mn-rpmsg-audio
|
||
|
|
- fsl,imx8mm-rpmsg-audio
|
||
|
|
- fsl,imx8mp-rpmsg-audio
|
||
|
|
- fsl,imx8ulp-rpmsg-audio
|
||
|
|
|
||
|
|
model:
|
||
|
|
$ref: /schemas/types.yaml#/definitions/string
|
||
|
|
description: User specified audio sound card name
|
||
|
|
|
||
|
|
clocks:
|
||
|
|
items:
|
||
|
|
- description: Peripheral clock for register access
|
||
|
|
- description: Master clock
|
||
|
|
- description: DMA clock for DMA register access
|
||
|
|
- description: Parent clock for multiple of 8kHz sample rates
|
||
|
|
- description: Parent clock for multiple of 11kHz sample rates
|
||
|
|
|
||
|
|
clock-names:
|
||
|
|
items:
|
||
|
|
- const: ipg
|
||
|
|
- const: mclk
|
||
|
|
- const: dma
|
||
|
|
- const: pll8k
|
||
|
|
- const: pll11k
|
||
|
|
|
||
|
|
power-domains:
|
||
|
|
description:
|
||
|
|
List of phandle and PM domain specifier as documented in
|
||
|
|
Documentation/devicetree/bindings/power/power_domain.txt
|
||
|
|
maxItems: 1
|
||
|
|
|
||
|
|
memory-region:
|
||
|
|
maxItems: 1
|
||
|
|
description:
|
||
|
|
phandle to a node describing reserved memory (System RAM memory)
|
||
|
|
The M core can't access all the DDR memory space on some platform,
|
||
|
|
So reserved a specific memory for dma buffer which M core can
|
||
|
|
access.
|
||
|
|
(see bindings/reserved-memory/reserved-memory.txt)
|
||
|
|
|
||
|
|
audio-codec:
|
||
|
|
$ref: /schemas/types.yaml#/definitions/phandle
|
||
|
|
description: The phandle to a node of audio codec
|
||
|
|
|
||
|
|
audio-routing:
|
||
|
|
$ref: /schemas/types.yaml#/definitions/non-unique-string-array
|
||
|
|
description: |
|
||
|
|
A list of the connections between audio components. Each entry is a
|
||
|
|
pair of strings, the first being the connection's sink, the second
|
||
|
|
being the connection's source.
|
||
|
|
|
||
|
|
fsl,enable-lpa:
|
||
|
|
$ref: /schemas/types.yaml#/definitions/flag
|
||
|
|
description: enable low power audio path.
|
||
|
|
|
||
|
|
fsl,rpmsg-out:
|
||
|
|
$ref: /schemas/types.yaml#/definitions/flag
|
||
|
|
description: |
|
||
|
|
This is a boolean property. If present, the transmitting function
|
||
|
|
will be enabled.
|
||
|
|
|
||
|
|
fsl,rpmsg-in:
|
||
|
|
$ref: /schemas/types.yaml#/definitions/flag
|
||
|
|
description: |
|
||
|
|
This is a boolean property. If present, the receiving function
|
||
|
|
will be enabled.
|
||
|
|
|
||
|
|
required:
|
||
|
|
- compatible
|
||
|
|
- model
|
||
|
|
|
||
|
|
additionalProperties: false
|
||
|
|
|
||
|
|
examples:
|
||
|
|
- |
|
||
|
|
#include <dt-bindings/clock/imx8mn-clock.h>
|
||
|
|
|
||
|
|
rpmsg_audio: rpmsg_audio {
|
||
|
|
compatible = "fsl,imx8mn-rpmsg-audio";
|
||
|
|
model = "wm8524-audio";
|
||
|
|
fsl,enable-lpa;
|
||
|
|
fsl,rpmsg-out;
|
||
|
|
clocks = <&clk IMX8MN_CLK_SAI3_IPG>,
|
||
|
|
<&clk IMX8MN_CLK_SAI3_ROOT>,
|
||
|
|
<&clk IMX8MN_CLK_SDMA3_ROOT>,
|
||
|
|
<&clk IMX8MN_AUDIO_PLL1_OUT>,
|
||
|
|
<&clk IMX8MN_AUDIO_PLL2_OUT>;
|
||
|
|
clock-names = "ipg", "mclk", "dma", "pll8k", "pll11k";
|
||
|
|
};
|