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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/clock/apple,nco.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Apple SoCs' NCO block
maintainers:
- Martin Povišer <povik+lin@cutebit.org>
description: |
The NCO (Numerically Controlled Oscillator) block found on Apple SoCs
such as the t8103 (M1) is a programmable clock generator performing
fractional division of a high frequency input clock.
It carries a number of independent channels and is typically used for
generation of audio bitclocks.
properties:
compatible:
items:
- enum:
- apple,t6000-nco
- apple,t8103-nco
- const: apple,nco
clocks:
description:
Specifies the reference clock from which the output clocks
are derived through fractional division.
maxItems: 1
'#clock-cells':
const: 1
reg:
maxItems: 1
required:
- compatible
- clocks
- '#clock-cells'
- reg
additionalProperties: false
examples:
- |
nco_clkref: clock-ref {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <900000000>;
clock-output-names = "nco-ref";
};
nco: clock-controller@23b044000 {
compatible = "apple,t8103-nco", "apple,nco";
reg = <0x3b044000 0x14000>;
#clock-cells = <1>;
clocks = <&nco_clkref>;
};
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