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linux_dsm_epyc7002/arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts
Dietmar Eggemann cc0dbf4366 arm: dts: vexpress-v2p-ca15_a7: Add cpu dynamic-power-coefficient information 
A CPUfreq driver, like the ARM big.LITTLE driver used on the TC2 board,
which provide the Energy Model with power cost information via the
PM_OPP of_dev_pm_opp_get_cpu_power() function, do need the
dynamic-power-coefficient (C) in the device tree.

Method used to obtain the C value:

C is computed by measuring energy (E) consumption of a frequency domain
(FD) over a 10s runtime (t) sysbench workload running at each Operating
Performance Point (OPP) affine to 1 or 2 CPUs of that FD while the other
CPUs of the system are hotplugged out.

By definition all CPUs of a FD have the the same micro-architecture. An
OPP is characterized by a certain frequency (f) and voltage (V) value.
The corresponding power values (P) are calculated by dividing the delta
of the E values between the runs with 2 and 1 CPUs by t.

With n data tuples (P, f, V), n equal to number of OPPs for this
frequency domain, we can solve C by:

P = Pstat + Pdyn

P = Pstat + CV²f

Cx = (Px - P1)/(Vx²fx - V1²f1) with x = {2, ..., n}

The C value is the arithmetic mean out of {C2, ..., Cn}.

Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: Quentin Perret <quentin.perret@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2019-01-29 15:30:00 +00:00

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// SPDX-License-Identifier: GPL-2.0
/*
* ARM Ltd. Versatile Express
*
* CoreTile Express A15x2 A7x3
* Cortex-A15_A7 MPCore (V2P-CA15_A7)
*
* HBI-0249A
*/
/dts-v1/;
#include "vexpress-v2m-rs1.dtsi"
/ {
model = "V2P-CA15_CA7";
arm,hbi = <0x249>;
arm,vexpress,site = <0xf>;
compatible = "arm,vexpress,v2p-ca15_a7", "arm,vexpress";
interrupt-parent = <&gic>;
#address-cells = <2>;
#size-cells = <2>;
chosen { };
aliases {
serial0 = &v2m_serial0;
serial1 = &v2m_serial1;
serial2 = &v2m_serial2;
serial3 = &v2m_serial3;
i2c0 = &v2m_i2c_dvi;
i2c1 = &v2m_i2c_pcie;
};
cpus {
#address-cells = <1>;
#size-cells = <0>;
cpu0: cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a15";
reg = <0>;
cci-control-port = <&cci_control1>;
cpu-idle-states = <&CLUSTER_SLEEP_BIG>;
capacity-dmips-mhz = <1024>;
dynamic-power-coefficient = <990>;
};
cpu1: cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a15";
reg = <1>;
cci-control-port = <&cci_control1>;
cpu-idle-states = <&CLUSTER_SLEEP_BIG>;
capacity-dmips-mhz = <1024>;
dynamic-power-coefficient = <990>;
};
cpu2: cpu@2 {
device_type = "cpu";
compatible = "arm,cortex-a7";
reg = <0x100>;
cci-control-port = <&cci_control2>;
cpu-idle-states = <&CLUSTER_SLEEP_LITTLE>;
capacity-dmips-mhz = <516>;
dynamic-power-coefficient = <133>;
};
cpu3: cpu@3 {
device_type = "cpu";
compatible = "arm,cortex-a7";
reg = <0x101>;
cci-control-port = <&cci_control2>;
cpu-idle-states = <&CLUSTER_SLEEP_LITTLE>;
capacity-dmips-mhz = <516>;
dynamic-power-coefficient = <133>;
};
cpu4: cpu@4 {
device_type = "cpu";
compatible = "arm,cortex-a7";
reg = <0x102>;
cci-control-port = <&cci_control2>;
cpu-idle-states = <&CLUSTER_SLEEP_LITTLE>;
capacity-dmips-mhz = <516>;
dynamic-power-coefficient = <133>;
};
idle-states {
CLUSTER_SLEEP_BIG: cluster-sleep-big {
compatible = "arm,idle-state";
local-timer-stop;
entry-latency-us = <1000>;
exit-latency-us = <700>;
min-residency-us = <2000>;
};
CLUSTER_SLEEP_LITTLE: cluster-sleep-little {
compatible = "arm,idle-state";
local-timer-stop;
entry-latency-us = <1000>;
exit-latency-us = <500>;
min-residency-us = <2500>;
};
};
};
memory@80000000 {
device_type = "memory";
reg = <0 0x80000000 0 0x40000000>;
};
reserved-memory {
#address-cells = <2>;
#size-cells = <2>;
ranges;
/* Chipselect 2 is physically at 0x18000000 */
vram: vram@18000000 {
/* 8 MB of designated video RAM */
compatible = "shared-dma-pool";
reg = <0 0x18000000 0 0x00800000>;
no-map;
};
};
wdt@2a490000 {
compatible = "arm,sp805", "arm,primecell";
reg = <0 0x2a490000 0 0x1000>;
interrupts = <0 98 4>;
clocks = <&oscclk6a>, <&oscclk6a>;
clock-names = "wdogclk", "apb_pclk";
};
hdlcd@2b000000 {
compatible = "arm,hdlcd";
reg = <0 0x2b000000 0 0x1000>;
interrupts = <0 85 4>;
clocks = <&hdlcd_clk>;
clock-names = "pxlclk";
};
memory-controller@2b0a0000 {
compatible = "arm,pl341", "arm,primecell";
reg = <0 0x2b0a0000 0 0x1000>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
};
gic: interrupt-controller@2c001000 {
compatible = "arm,cortex-a15-gic", "arm,cortex-a9-gic";
#interrupt-cells = <3>;
#address-cells = <0>;
interrupt-controller;
reg = <0 0x2c001000 0 0x1000>,
<0 0x2c002000 0 0x2000>,
<0 0x2c004000 0 0x2000>,
<0 0x2c006000 0 0x2000>;
interrupts = <1 9 0xf04>;
};
cci@2c090000 {
compatible = "arm,cci-400";
#address-cells = <1>;
#size-cells = <1>;
reg = <0 0x2c090000 0 0x1000>;
ranges = <0x0 0x0 0x2c090000 0x10000>;
cci_control1: slave-if@4000 {
compatible = "arm,cci-400-ctrl-if";
interface-type = "ace";
reg = <0x4000 0x1000>;
};
cci_control2: slave-if@5000 {
compatible = "arm,cci-400-ctrl-if";
interface-type = "ace";
reg = <0x5000 0x1000>;
};
pmu@9000 {
compatible = "arm,cci-400-pmu,r0";
reg = <0x9000 0x5000>;
interrupts = <0 105 4>,
<0 101 4>,
<0 102 4>,
<0 103 4>,
<0 104 4>;
};
};
memory-controller@7ffd0000 {
compatible = "arm,pl354", "arm,primecell";
reg = <0 0x7ffd0000 0 0x1000>;
interrupts = <0 86 4>,
<0 87 4>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
};
dma@7ff00000 {
compatible = "arm,pl330", "arm,primecell";
reg = <0 0x7ff00000 0 0x1000>;
interrupts = <0 92 4>,
<0 88 4>,
<0 89 4>,
<0 90 4>,
<0 91 4>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
};
scc@7fff0000 {
compatible = "arm,vexpress-scc,v2p-ca15_a7", "arm,vexpress-scc";
reg = <0 0x7fff0000 0 0x1000>;
interrupts = <0 95 4>;
};
timer {
compatible = "arm,armv7-timer";
interrupts = <1 13 0xf08>,
<1 14 0xf08>,
<1 11 0xf08>,
<1 10 0xf08>;
};
pmu-a15 {
compatible = "arm,cortex-a15-pmu";
interrupts = <0 68 4>,
<0 69 4>;
interrupt-affinity = <&cpu0>,
<&cpu1>;
};
pmu-a7 {
compatible = "arm,cortex-a7-pmu";
interrupts = <0 128 4>,
<0 129 4>,
<0 130 4>;
interrupt-affinity = <&cpu2>,
<&cpu3>,
<&cpu4>;
};
oscclk6a: oscclk6a {
/* Reference 24MHz clock */
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <24000000>;
clock-output-names = "oscclk6a";
};
dcc {
compatible = "arm,vexpress,config-bus";
arm,vexpress,config-bridge = <&v2m_sysreg>;
oscclk0 {
/* A15 PLL 0 reference clock */
compatible = "arm,vexpress-osc";
arm,vexpress-sysreg,func = <1 0>;
freq-range = <17000000 50000000>;
#clock-cells = <0>;
clock-output-names = "oscclk0";
};
oscclk1 {
/* A15 PLL 1 reference clock */
compatible = "arm,vexpress-osc";
arm,vexpress-sysreg,func = <1 1>;
freq-range = <17000000 50000000>;
#clock-cells = <0>;
clock-output-names = "oscclk1";
};
oscclk2 {
/* A7 PLL 0 reference clock */
compatible = "arm,vexpress-osc";
arm,vexpress-sysreg,func = <1 2>;
freq-range = <17000000 50000000>;
#clock-cells = <0>;
clock-output-names = "oscclk2";
};
oscclk3 {
/* A7 PLL 1 reference clock */
compatible = "arm,vexpress-osc";
arm,vexpress-sysreg,func = <1 3>;
freq-range = <17000000 50000000>;
#clock-cells = <0>;
clock-output-names = "oscclk3";
};
oscclk4 {
/* External AXI master clock */
compatible = "arm,vexpress-osc";
arm,vexpress-sysreg,func = <1 4>;
freq-range = <20000000 40000000>;
#clock-cells = <0>;
clock-output-names = "oscclk4";
};
hdlcd_clk: oscclk5 {
/* HDLCD PLL reference clock */
compatible = "arm,vexpress-osc";
arm,vexpress-sysreg,func = <1 5>;
freq-range = <23750000 165000000>;
#clock-cells = <0>;
clock-output-names = "oscclk5";
};
smbclk: oscclk6 {
/* Static memory controller clock */
compatible = "arm,vexpress-osc";
arm,vexpress-sysreg,func = <1 6>;
freq-range = <20000000 40000000>;
#clock-cells = <0>;
clock-output-names = "oscclk6";
};
oscclk7 {
/* SYS PLL reference clock */
compatible = "arm,vexpress-osc";
arm,vexpress-sysreg,func = <1 7>;
freq-range = <17000000 50000000>;
#clock-cells = <0>;
clock-output-names = "oscclk7";
};
oscclk8 {
/* DDR2 PLL reference clock */
compatible = "arm,vexpress-osc";
arm,vexpress-sysreg,func = <1 8>;
freq-range = <20000000 50000000>;
#clock-cells = <0>;
clock-output-names = "oscclk8";
};
volt-a15 {
/* A15 CPU core voltage */
compatible = "arm,vexpress-volt";
arm,vexpress-sysreg,func = <2 0>;
regulator-name = "A15 Vcore";
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <1050000>;
regulator-always-on;
label = "A15 Vcore";
};
volt-a7 {
/* A7 CPU core voltage */
compatible = "arm,vexpress-volt";
arm,vexpress-sysreg,func = <2 1>;
regulator-name = "A7 Vcore";
regulator-min-microvolt = <800000>;
regulator-max-microvolt = <1050000>;
regulator-always-on;
label = "A7 Vcore";
};
amp-a15 {
/* Total current for the two A15 cores */
compatible = "arm,vexpress-amp";
arm,vexpress-sysreg,func = <3 0>;
label = "A15 Icore";
};
amp-a7 {
/* Total current for the three A7 cores */
compatible = "arm,vexpress-amp";
arm,vexpress-sysreg,func = <3 1>;
label = "A7 Icore";
};
temp-dcc {
/* DCC internal temperature */
compatible = "arm,vexpress-temp";
arm,vexpress-sysreg,func = <4 0>;
label = "DCC";
};
power-a15 {
/* Total power for the two A15 cores */
compatible = "arm,vexpress-power";
arm,vexpress-sysreg,func = <12 0>;
label = "A15 Pcore";
};
power-a7 {
/* Total power for the three A7 cores */
compatible = "arm,vexpress-power";
arm,vexpress-sysreg,func = <12 1>;
label = "A7 Pcore";
};
energy-a15 {
/* Total energy for the two A15 cores */
compatible = "arm,vexpress-energy";
arm,vexpress-sysreg,func = <13 0>, <13 1>;
label = "A15 Jcore";
};
energy-a7 {
/* Total energy for the three A7 cores */
compatible = "arm,vexpress-energy";
arm,vexpress-sysreg,func = <13 2>, <13 3>;
label = "A7 Jcore";
};
};
etb@20010000 {
compatible = "arm,coresight-etb10", "arm,primecell";
reg = <0 0x20010000 0 0x1000>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
in-ports {
port {
etb_in_port: endpoint {
remote-endpoint = <&replicator_out_port0>;
};
};
};
};
tpiu@20030000 {
compatible = "arm,coresight-tpiu", "arm,primecell";
reg = <0 0x20030000 0 0x1000>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
in-ports {
port {
tpiu_in_port: endpoint {
remote-endpoint = <&replicator_out_port1>;
};
};
};
};
replicator {
/* non-configurable replicators don't show up on the
* AMBA bus. As such no need to add "arm,primecell".
*/
compatible = "arm,coresight-replicator";
out-ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
replicator_out_port0: endpoint {
remote-endpoint = <&etb_in_port>;
};
};
port@1 {
reg = <1>;
replicator_out_port1: endpoint {
remote-endpoint = <&tpiu_in_port>;
};
};
};
in-ports {
port {
replicator_in_port0: endpoint {
remote-endpoint = <&funnel_out_port0>;
};
};
};
};
funnel@20040000 {
compatible = "arm,coresight-funnel", "arm,primecell";
reg = <0 0x20040000 0 0x1000>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
out-ports {
port {
funnel_out_port0: endpoint {
remote-endpoint =
<&replicator_in_port0>;
};
};
};
in-ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
funnel_in_port0: endpoint {
remote-endpoint = <&ptm0_out_port>;
};
};
port@1 {
reg = <1>;
funnel_in_port1: endpoint {
remote-endpoint = <&ptm1_out_port>;
};
};
port@2 {
reg = <2>;
funnel_in_port2: endpoint {
remote-endpoint = <&etm0_out_port>;
};
};
/* Input port #3 is for ITM, not supported here */
port@4 {
reg = <4>;
funnel_in_port4: endpoint {
remote-endpoint = <&etm1_out_port>;
};
};
port@5 {
reg = <5>;
funnel_in_port5: endpoint {
remote-endpoint = <&etm2_out_port>;
};
};
};
};
ptm@2201c000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0x2201c000 0 0x1000>;
cpu = <&cpu0>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
out-ports {
port {
ptm0_out_port: endpoint {
remote-endpoint = <&funnel_in_port0>;
};
};
};
};
ptm@2201d000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0x2201d000 0 0x1000>;
cpu = <&cpu1>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
out-ports {
port {
ptm1_out_port: endpoint {
remote-endpoint = <&funnel_in_port1>;
};
};
};
};
etm@2203c000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0x2203c000 0 0x1000>;
cpu = <&cpu2>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
out-ports {
port {
etm0_out_port: endpoint {
remote-endpoint = <&funnel_in_port2>;
};
};
};
};
etm@2203d000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0x2203d000 0 0x1000>;
cpu = <&cpu3>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
out-ports {
port {
etm1_out_port: endpoint {
remote-endpoint = <&funnel_in_port4>;
};
};
};
};
etm@2203e000 {
compatible = "arm,coresight-etm3x", "arm,primecell";
reg = <0 0x2203e000 0 0x1000>;
cpu = <&cpu4>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
out-ports {
port {
etm2_out_port: endpoint {
remote-endpoint = <&funnel_in_port5>;
};
};
};
};
smb: smb@8000000 {
compatible = "simple-bus";
#address-cells = <2>;
#size-cells = <1>;
ranges = <0 0 0 0x08000000 0x04000000>,
<1 0 0 0x14000000 0x04000000>,
<2 0 0 0x18000000 0x04000000>,
<3 0 0 0x1c000000 0x04000000>,
<4 0 0 0x0c000000 0x04000000>,
<5 0 0 0x10000000 0x04000000>;
#interrupt-cells = <1>;
interrupt-map-mask = <0 0 63>;
interrupt-map = <0 0 0 &gic 0 0 4>,
<0 0 1 &gic 0 1 4>,
<0 0 2 &gic 0 2 4>,
<0 0 3 &gic 0 3 4>,
<0 0 4 &gic 0 4 4>,
<0 0 5 &gic 0 5 4>,
<0 0 6 &gic 0 6 4>,
<0 0 7 &gic 0 7 4>,
<0 0 8 &gic 0 8 4>,
<0 0 9 &gic 0 9 4>,
<0 0 10 &gic 0 10 4>,
<0 0 11 &gic 0 11 4>,
<0 0 12 &gic 0 12 4>,
<0 0 13 &gic 0 13 4>,
<0 0 14 &gic 0 14 4>,
<0 0 15 &gic 0 15 4>,
<0 0 16 &gic 0 16 4>,
<0 0 17 &gic 0 17 4>,
<0 0 18 &gic 0 18 4>,
<0 0 19 &gic 0 19 4>,
<0 0 20 &gic 0 20 4>,
<0 0 21 &gic 0 21 4>,
<0 0 22 &gic 0 22 4>,
<0 0 23 &gic 0 23 4>,
<0 0 24 &gic 0 24 4>,
<0 0 25 &gic 0 25 4>,
<0 0 26 &gic 0 26 4>,
<0 0 27 &gic 0 27 4>,
<0 0 28 &gic 0 28 4>,
<0 0 29 &gic 0 29 4>,
<0 0 30 &gic 0 30 4>,
<0 0 31 &gic 0 31 4>,
<0 0 32 &gic 0 32 4>,
<0 0 33 &gic 0 33 4>,
<0 0 34 &gic 0 34 4>,
<0 0 35 &gic 0 35 4>,
<0 0 36 &gic 0 36 4>,
<0 0 37 &gic 0 37 4>,
<0 0 38 &gic 0 38 4>,
<0 0 39 &gic 0 39 4>,
<0 0 40 &gic 0 40 4>,
<0 0 41 &gic 0 41 4>,
<0 0 42 &gic 0 42 4>;
};
site2: hsb@40000000 {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0 0x40000000 0x3fef0000>;
#interrupt-cells = <1>;
interrupt-map-mask = <0 3>;
interrupt-map = <0 0 &gic 0 36 4>,
<0 1 &gic 0 37 4>,
<0 2 &gic 0 38 4>,
<0 3 &gic 0 39 4>;
};
};
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