linux_dsm_epyc7002/arch/arm64/boot/dts/arm/juno-r1.dts
Jon Medhurst (Tixy) 28e10a8f3a arm64: dts: juno: Add idle-states to device tree
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>
2015-12-22 11:23:20 -08:00

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/*
* ARM Ltd. Juno Platform
*
* Copyright (c) 2015 ARM Ltd.
*
* This file is licensed under a dual GPLv2 or BSD license.
*/
/dts-v1/;
#include <dt-bindings/interrupt-controller/arm-gic.h>
/ {
model = "ARM Juno development board (r1)";
compatible = "arm,juno-r1", "arm,juno", "arm,vexpress";
interrupt-parent = <&gic>;
#address-cells = <2>;
#size-cells = <2>;
aliases {
serial0 = &soc_uart0;
};
chosen {
stdout-path = "serial0:115200n8";
};
psci {
compatible = "arm,psci-0.2";
method = "smc";
};
cpus {
#address-cells = <2>;
#size-cells = <0>;
cpu-map {
cluster0 {
core0 {
cpu = <&A57_0>;
};
core1 {
cpu = <&A57_1>;
};
};
cluster1 {
core0 {
cpu = <&A53_0>;
};
core1 {
cpu = <&A53_1>;
};
core2 {
cpu = <&A53_2>;
};
core3 {
cpu = <&A53_3>;
};
};
};
idle-states {
entry-method = "arm,psci";
CPU_SLEEP_0: cpu-sleep-0 {
compatible = "arm,idle-state";
arm,psci-suspend-param = <0x0010000>;
local-timer-stop;
entry-latency-us = <300>;
exit-latency-us = <1200>;
min-residency-us = <2000>;
};
CLUSTER_SLEEP_0: cluster-sleep-0 {
compatible = "arm,idle-state";
arm,psci-suspend-param = <0x1010000>;
local-timer-stop;
entry-latency-us = <300>;
exit-latency-us = <1200>;
min-residency-us = <2500>;
};
};
A57_0: cpu@0 {
compatible = "arm,cortex-a57","arm,armv8";
reg = <0x0 0x0>;
device_type = "cpu";
enable-method = "psci";
next-level-cache = <&A57_L2>;
clocks = <&scpi_dvfs 0>;
cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
};
A57_1: cpu@1 {
compatible = "arm,cortex-a57","arm,armv8";
reg = <0x0 0x1>;
device_type = "cpu";
enable-method = "psci";
next-level-cache = <&A57_L2>;
clocks = <&scpi_dvfs 0>;
cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
};
A53_0: cpu@100 {
compatible = "arm,cortex-a53","arm,armv8";
reg = <0x0 0x100>;
device_type = "cpu";
enable-method = "psci";
next-level-cache = <&A53_L2>;
clocks = <&scpi_dvfs 1>;
cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
};
A53_1: cpu@101 {
compatible = "arm,cortex-a53","arm,armv8";
reg = <0x0 0x101>;
device_type = "cpu";
enable-method = "psci";
next-level-cache = <&A53_L2>;
clocks = <&scpi_dvfs 1>;
cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
};
A53_2: cpu@102 {
compatible = "arm,cortex-a53","arm,armv8";
reg = <0x0 0x102>;
device_type = "cpu";
enable-method = "psci";
next-level-cache = <&A53_L2>;
clocks = <&scpi_dvfs 1>;
cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
};
A53_3: cpu@103 {
compatible = "arm,cortex-a53","arm,armv8";
reg = <0x0 0x103>;
device_type = "cpu";
enable-method = "psci";
next-level-cache = <&A53_L2>;
clocks = <&scpi_dvfs 1>;
cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
};
A57_L2: l2-cache0 {
compatible = "cache";
};
A53_L2: l2-cache1 {
compatible = "cache";
};
};
pmu_a57 {
compatible = "arm,cortex-a57-pmu";
interrupts = <GIC_SPI 02 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 06 IRQ_TYPE_LEVEL_HIGH>;
interrupt-affinity = <&A57_0>,
<&A57_1>;
};
pmu_a53 {
compatible = "arm,cortex-a53-pmu";
interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 26 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 30 IRQ_TYPE_LEVEL_HIGH>;
interrupt-affinity = <&A53_0>,
<&A53_1>,
<&A53_2>,
<&A53_3>;
};
#include "juno-base.dtsi"
pcie-controller@40000000 {
compatible = "arm,juno-r1-pcie", "plda,xpressrich3-axi", "pci-host-ecam-generic";
device_type = "pci";
reg = <0 0x40000000 0 0x10000000>; /* ECAM config space */
bus-range = <0 255>;
linux,pci-domain = <0>;
#address-cells = <3>;
#size-cells = <2>;
dma-coherent;
ranges = <0x01000000 0x00 0x5f800000 0x00 0x5f800000 0x0 0x00800000>,
<0x02000000 0x00 0x50000000 0x00 0x50000000 0x0 0x08000000>,
<0x42000000 0x40 0x00000000 0x40 0x00000000 0x1 0x00000000>;
#interrupt-cells = <1>;
interrupt-map-mask = <0 0 0 7>;
interrupt-map = <0 0 0 1 &gic 0 0 0 136 4>,
<0 0 0 2 &gic 0 0 0 137 4>,
<0 0 0 3 &gic 0 0 0 138 4>,
<0 0 0 4 &gic 0 0 0 139 4>;
msi-parent = <&v2m_0>;
};
};
&memtimer {
status = "okay";
};