1# SPDX-License-Identifier: GPL-2.0 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/clock/fixed-mmio-clock.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Simple memory mapped IO fixed-rate clock sources 8 9description: 10 This binding describes a fixed-rate clock for which the frequency can 11 be read from a single 32-bit memory mapped I/O register. 12 13 It was designed for test systems, like FPGA, not for complete, 14 finished SoCs. 15 16maintainers: 17 - Jan Kotas <jank@cadence.com> 18 19properties: 20 compatible: 21 const: fixed-mmio-clock 22 23 reg: 24 maxItems: 1 25 26 "#clock-cells": 27 const: 0 28 29 clock-output-names: 30 maxItems: 1 31 32required: 33 - compatible 34 - reg 35 - "#clock-cells" 36 37additionalProperties: false 38 39examples: 40 - | 41 sysclock: sysclock@fd020004 { 42 compatible = "fixed-mmio-clock"; 43 #clock-cells = <0>; 44 reg = <0xfd020004 0x4>; 45 clock-output-names = "sysclk"; 46 }; 47... 48