# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/clock/ti,cdce925.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: TI CDCE913/925/937/949 programmable I2C clock synthesizers maintainers: - Alexander Stein description: | Flexible Low Power LVCMOS Clock Generator with SSC Support for EMI Reduction - CDCE(L)913: 1-PLL, 3 Outputs https://www.ti.com/product/cdce913 - CDCE(L)925: 2-PLL, 5 Outputs https://www.ti.com/product/cdce925 - CDCE(L)937: 3-PLL, 7 Outputs https://www.ti.com/product/cdce937 - CDCE(L)949: 4-PLL, 9 Outputs https://www.ti.com/product/cdce949 properties: compatible: enum: - ti,cdce913 - ti,cdce925 - ti,cdce937 - ti,cdce949 reg: maxItems: 1 clocks: items: - description: fixed parent clock "#clock-cells": const: 1 vdd-supply: description: Regulator that provides 1.8V Vdd power supply vddout-supply: description: | Regulator that provides Vddout power supply. non-L variant: 2.5V or 3.3V for L variant: 1.8V for xtal-load-pf: $ref: /schemas/types.yaml#/definitions/uint32 description: | Crystal load-capacitor value to fine-tune performance on a board, or to compensate for external influences. patternProperties: "^PLL[1-4]$": type: object description: | optional child node can be used to specify spread spectrum clocking parameters for a board additionalProperties: false properties: spread-spectrum: $ref: /schemas/types.yaml#/definitions/uint32 description: SSC mode as defined in the data sheet spread-spectrum-center: type: boolean description: | Use "centered" mode instead of "max" mode. When present, the clock runs at the requested frequency on average. Otherwise the requested frequency is the maximum value of the SCC range. required: - compatible - reg - clocks - "#clock-cells" additionalProperties: false examples: - | i2c { #address-cells = <1>; #size-cells = <0>; cdce925: clock-controller@64 { compatible = "ti,cdce925"; reg = <0x64>; clocks = <&xtal_27Mhz>; #clock-cells = <1>; xtal-load-pf = <5>; vdd-supply = <®_1v8>; vddout-supply = <®_3v3>; /* PLL options to get SSC 1% centered */ PLL2 { spread-spectrum = <4>; spread-spectrum-center; }; }; };