1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2# Copyright 2018 Linaro Ltd. 3%YAML 1.2 4--- 5$id: "http://devicetree.org/schemas/net/intel,ixp46x-ptp-timer.yaml#" 6$schema: "http://devicetree.org/meta-schemas/core.yaml#" 7 8title: Intel IXP46x PTP Timer (TSYNC) 9 10maintainers: 11 - Linus Walleij <linus.walleij@linaro.org> 12 13description: | 14 The Intel IXP46x PTP timer is known in the manual as IEEE1588 Hardware 15 Assist and Time Synchronization Hardware Assist TSYNC provides a PTP 16 timer. It exists in the Intel IXP45x and IXP46x XScale SoCs. 17 18properties: 19 compatible: 20 const: intel,ixp46x-ptp-timer 21 22 reg: 23 maxItems: 1 24 25 interrupts: 26 items: 27 - description: Interrupt to trigger master mode snapshot from the 28 PRP timer, usually a GPIO interrupt. 29 - description: Interrupt to trigger slave mode snapshot from the 30 PRP timer, usually a GPIO interrupt. 31 32 interrupt-names: 33 items: 34 - const: master 35 - const: slave 36 37required: 38 - compatible 39 - reg 40 - interrupts 41 - interrupt-names 42 43additionalProperties: false 44 45examples: 46 - | 47 #include <dt-bindings/interrupt-controller/irq.h> 48 ptp-timer@c8010000 { 49 compatible = "intel,ixp46x-ptp-timer"; 50 reg = <0xc8010000 0x1000>; 51 interrupt-parent = <&gpio0>; 52 interrupts = <8 IRQ_TYPE_EDGE_FALLING>, <7 IRQ_TYPE_EDGE_FALLING>; 53 interrupt-names = "master", "slave"; 54 }; 55