1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/snps,arc-timer.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Synopsys ARC Local Timer 8 9maintainers: 10 - Vineet Gupta <vgupta@synopsys.com> 11 12description: > 13 Synopsys ARC Local Timer with Interrupt Capabilities 14 15 - Found on all ARC CPUs (ARC700/ARCHS) 16 - Can be optionally programmed to interrupt on Limit 17 - Two identical copies TIMER0 and TIMER1 exist in ARC cores and historically 18 TIMER0 used as clockevent provider (true for all ARC cores) 19 TIMER1 used for clocksource (mandatory for ARC700, optional for ARC HS) 20 21properties: 22 compatible: 23 const: snps,arc-timer 24 25 interrupts: 26 maxItems: 1 27 description: A single timer interrupt going into the parent interrupt controller. 28 Use <16> for ARCHS cores, <3> for ARC700 cores. 29 30 clocks: 31 maxItems: 1 32 33required: 34 - compatible 35 - clocks 36 37additionalProperties: false 38 39examples: 40 - | 41 timer0 { 42 compatible = "snps,arc-timer"; 43 interrupts = <3>; 44 clocks = <&core_clk>; 45 }; 46