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|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/clock/renesas,9series.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Binding for Renesas 9-series I2C PCIe clock generators
description: |
The Renesas 9-series are I2C PCIe clock generators providing
from 1 to 20 output clocks.
When referencing the provided clock in the DT using phandle
and clock specifier, the following mapping applies:
- 9FGV0241:
0 -- DIF0
1 -- DIF1
maintainers:
- Marek Vasut <marex@denx.de>
properties:
compatible:
enum:
- renesas,9fgv0241
reg:
description: I2C device address
enum: [ 0x68, 0x6a ]
'#clock-cells':
const: 1
clocks:
items:
- description: XTal input clock
renesas,out-amplitude-microvolt:
enum: [ 600000, 700000, 800000, 900000 ]
description: Output clock signal amplitude
renesas,out-spread-spectrum:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [ 100000, 99750, 99500 ]
description: Output clock down spread in pcm (1/1000 of percent)
patternProperties:
"^DIF[0-19]$":
type: object
description:
Description of one of the outputs (DIF0..DIF19).
properties:
renesas,slew-rate:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [ 2000000, 3000000 ]
description: Output clock slew rate select in V/ns
additionalProperties: false
required:
- compatible
- reg
- clocks
- '#clock-cells'
additionalProperties: false
examples:
- |
/* 25MHz reference crystal */
ref25: ref25m {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <25000000>;
};
i2c@0 {
reg = <0x0 0x100>;
#address-cells = <1>;
#size-cells = <0>;
rs9: clock-generator@6a {
compatible = "renesas,9fgv0241";
reg = <0x6a>;
#clock-cells = <1>;
clocks = <&ref25m>;
DIF0 {
renesas,slew-rate = <3000000>;
};
};
};
...
|
