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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/mchp,i2s-mcc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Microchip I2S Multi-Channel Controller
maintainers:
- Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
description:
The I2SMCC complies with the Inter-IC Sound (I2S) bus specification and
supports a Time Division Multiplexed (TDM) interface with external
multi-channel audio codecs. It consists of a receiver, a transmitter and a
common clock generator that can be enabled separately to provide Adapter,
Client or Controller modes with receiver and/or transmitter active.
On later I2SMCC versions (starting with Microchip's SAMA7G5) I2S
multi-channel is supported by using multiple data pins, output and
input, without TDM.
properties:
"#sound-dai-cells":
const: 0
compatible:
enum:
- microchip,sam9x60-i2smcc
- microchip,sama7g5-i2smcc
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
items:
- description: Peripheral Bus Clock
- description: Generic Clock (Optional). Should be set mostly when Master
Mode is required.
minItems: 1
clock-names:
items:
- const: pclk
- const: gclk
minItems: 1
dmas:
items:
- description: TX DMA Channel
- description: RX DMA Channel
dma-names:
items:
- const: tx
- const: rx
microchip,tdm-data-pair:
description:
Represents the DIN/DOUT pair pins that are used to receive/send
TDM data. It is optional and it is only needed if the controller
uses the TDM mode.
$ref: /schemas/types.yaml#/definitions/uint8
enum: [0, 1, 2, 3]
default: 0
if:
properties:
compatible:
const: microchip,sam9x60-i2smcc
then:
properties:
microchip,tdm-data-pair: false
required:
- "#sound-dai-cells"
- compatible
- reg
- interrupts
- clocks
- clock-names
- dmas
- dma-names
additionalProperties: false
examples:
- |
#include <dt-bindings/dma/at91.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
i2s@f001c000 {
#sound-dai-cells = <0>;
compatible = "microchip,sam9x60-i2smcc";
reg = <0xf001c000 0x100>;
interrupts = <34 IRQ_TYPE_LEVEL_HIGH 7>;
dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
AT91_XDMAC_DT_PERID(36))>,
<&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
AT91_XDMAC_DT_PERID(37))>;
dma-names = "tx", "rx";
clocks = <&i2s_clk>, <&i2s_gclk>;
clock-names = "pclk", "gclk";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2s_default>;
};
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