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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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28e10a8f3a
This patch adds idle-states bindings data collected through a set of benchmarking experiments (latency and energy consumption) on Juno boards. Latencies data represents the worst case scenarios as required by the DT idle-states bindings. Signed-off-by: Jon Medhurst <tixy@linaro.org> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Olof Johansson <olof@lixom.net>
176 lines
3.5 KiB
Plaintext
176 lines
3.5 KiB
Plaintext
/*
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* ARM Ltd. Juno Platform
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*
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* Copyright (c) 2013-2014 ARM Ltd.
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*
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* This file is licensed under a dual GPLv2 or BSD license.
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*/
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/dts-v1/;
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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/ {
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model = "ARM Juno development board (r0)";
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compatible = "arm,juno", "arm,vexpress";
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interrupt-parent = <&gic>;
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#address-cells = <2>;
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#size-cells = <2>;
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aliases {
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serial0 = &soc_uart0;
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};
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chosen {
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stdout-path = "serial0:115200n8";
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};
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psci {
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compatible = "arm,psci-0.2";
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method = "smc";
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};
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cpus {
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#address-cells = <2>;
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#size-cells = <0>;
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cpu-map {
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cluster0 {
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core0 {
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cpu = <&A57_0>;
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};
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core1 {
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cpu = <&A57_1>;
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};
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};
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cluster1 {
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core0 {
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cpu = <&A53_0>;
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};
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core1 {
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cpu = <&A53_1>;
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};
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core2 {
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cpu = <&A53_2>;
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};
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core3 {
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cpu = <&A53_3>;
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};
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};
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};
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idle-states {
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entry-method = "arm,psci";
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CPU_SLEEP_0: cpu-sleep-0 {
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compatible = "arm,idle-state";
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arm,psci-suspend-param = <0x0010000>;
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local-timer-stop;
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entry-latency-us = <300>;
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exit-latency-us = <1200>;
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min-residency-us = <2000>;
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};
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CLUSTER_SLEEP_0: cluster-sleep-0 {
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compatible = "arm,idle-state";
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arm,psci-suspend-param = <0x1010000>;
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local-timer-stop;
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entry-latency-us = <300>;
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exit-latency-us = <1200>;
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min-residency-us = <2500>;
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};
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};
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A57_0: cpu@0 {
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compatible = "arm,cortex-a57","arm,armv8";
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reg = <0x0 0x0>;
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device_type = "cpu";
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enable-method = "psci";
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next-level-cache = <&A57_L2>;
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clocks = <&scpi_dvfs 0>;
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cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
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};
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A57_1: cpu@1 {
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compatible = "arm,cortex-a57","arm,armv8";
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reg = <0x0 0x1>;
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device_type = "cpu";
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enable-method = "psci";
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next-level-cache = <&A57_L2>;
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clocks = <&scpi_dvfs 0>;
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cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
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};
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A53_0: cpu@100 {
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compatible = "arm,cortex-a53","arm,armv8";
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reg = <0x0 0x100>;
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device_type = "cpu";
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enable-method = "psci";
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next-level-cache = <&A53_L2>;
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clocks = <&scpi_dvfs 1>;
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cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
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};
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A53_1: cpu@101 {
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compatible = "arm,cortex-a53","arm,armv8";
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reg = <0x0 0x101>;
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device_type = "cpu";
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enable-method = "psci";
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next-level-cache = <&A53_L2>;
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clocks = <&scpi_dvfs 1>;
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cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
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};
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A53_2: cpu@102 {
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compatible = "arm,cortex-a53","arm,armv8";
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reg = <0x0 0x102>;
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device_type = "cpu";
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enable-method = "psci";
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next-level-cache = <&A53_L2>;
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clocks = <&scpi_dvfs 1>;
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cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
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};
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A53_3: cpu@103 {
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compatible = "arm,cortex-a53","arm,armv8";
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reg = <0x0 0x103>;
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device_type = "cpu";
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enable-method = "psci";
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next-level-cache = <&A53_L2>;
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clocks = <&scpi_dvfs 1>;
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cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
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};
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A57_L2: l2-cache0 {
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compatible = "cache";
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};
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A53_L2: l2-cache1 {
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compatible = "cache";
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};
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};
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pmu_a57 {
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compatible = "arm,cortex-a57-pmu";
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interrupts = <GIC_SPI 02 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 06 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-affinity = <&A57_0>,
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<&A57_1>;
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};
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pmu_a53 {
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compatible = "arm,cortex-a53-pmu";
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interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>,
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<GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
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interrupt-affinity = <&A53_0>,
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<&A53_1>,
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<&A53_2>,
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<&A53_3>;
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};
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#include "juno-base.dtsi"
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};
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