1*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun%YAML 1.2 3*4882a593Smuzhiyun--- 4*4882a593Smuzhiyun$id: http://devicetree.org/schemas/power/domain-idle-state.yaml# 5*4882a593Smuzhiyun$schema: http://devicetree.org/meta-schemas/core.yaml# 6*4882a593Smuzhiyun 7*4882a593Smuzhiyuntitle: PM Domain Idle States binding description 8*4882a593Smuzhiyun 9*4882a593Smuzhiyunmaintainers: 10*4882a593Smuzhiyun - Ulf Hansson <ulf.hansson@linaro.org> 11*4882a593Smuzhiyun 12*4882a593Smuzhiyundescription: 13*4882a593Smuzhiyun A domain idle state node represents the state parameters that will be used to 14*4882a593Smuzhiyun select the state when there are no active components in the PM domain. 15*4882a593Smuzhiyun 16*4882a593Smuzhiyunproperties: 17*4882a593Smuzhiyun $nodename: 18*4882a593Smuzhiyun const: domain-idle-states 19*4882a593Smuzhiyun 20*4882a593SmuzhiyunpatternProperties: 21*4882a593Smuzhiyun "^(cpu|cluster|domain)-": 22*4882a593Smuzhiyun type: object 23*4882a593Smuzhiyun description: 24*4882a593Smuzhiyun Each state node represents a domain idle state description. 25*4882a593Smuzhiyun 26*4882a593Smuzhiyun properties: 27*4882a593Smuzhiyun compatible: 28*4882a593Smuzhiyun const: domain-idle-state 29*4882a593Smuzhiyun 30*4882a593Smuzhiyun entry-latency-us: 31*4882a593Smuzhiyun description: 32*4882a593Smuzhiyun The worst case latency in microseconds required to enter the idle 33*4882a593Smuzhiyun state. Note that, the exit-latency-us duration may be guaranteed only 34*4882a593Smuzhiyun after the entry-latency-us has passed. 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun exit-latency-us: 37*4882a593Smuzhiyun description: 38*4882a593Smuzhiyun The worst case latency in microseconds required to exit the idle 39*4882a593Smuzhiyun state. 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun min-residency-us: 42*4882a593Smuzhiyun description: 43*4882a593Smuzhiyun The minimum residency duration in microseconds after which the idle 44*4882a593Smuzhiyun state will yield power benefits, after overcoming the overhead while 45*4882a593Smuzhiyun entering the idle state. 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun required: 48*4882a593Smuzhiyun - compatible 49*4882a593Smuzhiyun - entry-latency-us 50*4882a593Smuzhiyun - exit-latency-us 51*4882a593Smuzhiyun - min-residency-us 52*4882a593Smuzhiyun 53*4882a593SmuzhiyunadditionalProperties: false 54*4882a593Smuzhiyun 55*4882a593Smuzhiyunexamples: 56*4882a593Smuzhiyun - | 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun domain-idle-states { 59*4882a593Smuzhiyun domain_retention: domain-retention { 60*4882a593Smuzhiyun compatible = "domain-idle-state"; 61*4882a593Smuzhiyun entry-latency-us = <20>; 62*4882a593Smuzhiyun exit-latency-us = <40>; 63*4882a593Smuzhiyun min-residency-us = <80>; 64*4882a593Smuzhiyun }; 65*4882a593Smuzhiyun }; 66*4882a593Smuzhiyun... 67