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