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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/atmel,at91-ssc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Atmel Serial Synchronous Serial (SSC)
maintainers:
- Andrei Simion <andrei.simion@microchip.com>
description:
The Atmel Synchronous Serial Controller (SSC) provides a versatile
synchronous communication link for audio and telecom applications,
supporting protocols like I2S, Short Frame Sync, and Long Frame Sync.
properties:
compatible:
enum:
- atmel,at91rm9200-ssc
- atmel,at91sam9g45-ssc
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
maxItems: 1
clock-names:
items:
- const: pclk
dmas:
items:
- description: TX DMA Channel
- description: RX DMA Channel
dma-names:
items:
- const: tx
- const: rx
atmel,clk-from-rk-pin:
description:
Specify the clock source for the SSC (Synchronous Serial Controller)
when operating in slave mode. By default, the clock is sourced from
the TK pin.
type: boolean
"#sound-dai-cells":
const: 0
required:
- compatible
- reg
- interrupts
- clocks
- clock-names
allOf:
- $ref: dai-common.yaml#
- if:
properties:
compatible:
contains:
enum:
- atmel,at91sam9g45-ssc
then:
required:
- dmas
- dma-names
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/clock/at91.h>
#include <dt-bindings/dma/at91.h>
#include <dt-bindings/interrupt-controller/irq.h>
ssc@100000 {
compatible = "atmel,at91sam9g45-ssc";
reg = <0x100000 0x4000>;
interrupts = <28 IRQ_TYPE_LEVEL_HIGH 5>;
dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
AT91_XDMAC_DT_PERID(38))>,
<&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) |
AT91_XDMAC_DT_PERID(39))>;
dma-names = "tx", "rx";
clocks = <&pmc PMC_TYPE_PERIPHERAL 28>;
clock-names = "pclk";
#sound-dai-cells = <0>;
};
ssc@c00000 {
compatible = "atmel,at91rm9200-ssc";
reg = <0xc00000 0x4000>;
interrupts = <14 IRQ_TYPE_LEVEL_HIGH 5>;
clocks = <&pmc PMC_TYPE_PERIPHERAL 14>;
clock-names = "pclk";
};
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