...
Performance DetailsSingle
...
is 870 Qspipsu read
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is 7555 Dual-Parallel
...
is 1700 Qspipsu read
...
is 14933 Change Log
2016.3
Single
Qspipsu read
Dual-Parallel
Qspipsu read
Change Log
2016.3
↧
Qspipsu Standalone driver
Single
Qspipsu read
Dual-Parallel
Qspipsu read
Change Log
2016.3
↧
Embedded SW Support
...
table below. All other content on the Wiki is provided "as is" and support is only available via the Embedded Forums. Software
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↧
↧
Embedded SW Support
...
support isSoftware
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↧
Zynq UltraScale＋ MPSoC Power Management - ZCU102 SW Design Examples
Zynq UltraScale+ MPSoC Power Management - ZCU102 Software Design Examples
This page provides some power management software design examples that can be implemented on the ZCU102 development board.
Before You Start
Prerequisites
You have a ZCU102 development board.
You have used PetaLinux to customize, build and boot Linux.
Tips
Refer to UG1137 "Zynq UltraScale+ MPSoC Software Developer Guide" Chapter 9 for more information about power management APIs.
See here on how to generate the Config Object file.
Refer to UG1209 "Zynq UltraScale+ MPSoC: Embedded Design Tutorial" for more details.
Google "Xilinx UGXXXX" to find the latest version of the Xilinx document.
Getting Started - Hello World
This is an empty application that prints "Hello World!" to the UART. Please use this as a starting point for creating new RPU applications for other design examples provided here.
This page provides some power management software design examples that can be implemented on the ZCU102 development board.
Before You Start
Prerequisites
You have a ZCU102 development board.
...
You have installed Petalinux (2017.1 release).You have used PetaLinux to customize, build and boot Linux.
Tips
Refer to UG1137 "Zynq UltraScale+ MPSoC Software Developer Guide" Chapter 9 for more information about power management APIs.
See here on how to generate the Config Object file.
Refer to UG1209 "Zynq UltraScale+ MPSoC: Embedded Design Tutorial" for more details.
Google "Xilinx UGXXXX" to find the latest version of the Xilinx document.
Getting Started - Hello World
This is an empty application that prints "Hello World!" to the UART. Please use this as a starting point for creating new RPU applications for other design examples provided here.
↧
Zynq UltraScale＋ MPSoC Ubuntu part 2 - Building and Running the Ubuntu Desktop From Sources
...
Device Drivers->Sound card support->Advanced Linux Sound Architecture’ enabling ALSA supportKernel hacking > Tracers > Kernel Function Tracer
...
the kernel Creating bootable linux images
Change directory to Petalinux project xilinx-zcu102-2017.1 and enter the following command to build Linux Images. Output binaries can be found in xilinx-zcu102-2017.1/images/linux directory.
↧
↧
Zynq UltraScale＋ MPSoC Ubuntu part 2 - Building and Running the Ubuntu Desktop From Sources:
we have not created the Ubuntu rootfs with Petalinux tools.It was downloaded from linaro website.
↧
ZU＋ Example - Typical Power States
ZU+ Example - Typical Power States
Under Construction
Important! Tag the page
Important! All External Links should open in a new tab/window; all Internal Links to Xilinx wiki pages, should open in the same tab/window.
<Insert introduction text here>
1. Create petalinux project
Run below commands from bash terminal to create project petalinux.
Under Construction
Important! All External Links should open in a new tab/window; all Internal Links to Xilinx wiki pages, should open in the same tab/window.
<Insert introduction text here>
1. Create petalinux project
Run below commands from bash terminal to create project petalinux.
↧
ZU＋ Example - Typical Power States
...
3. Minimum kernel configurationfollow below steps if latency is to be measured with minimum kernel configuration:
...
config file Rename file as defconfig
Add below line in project-spec/meta-user/recipes-kernel/linux/linux-xlnx_%.bbappend file:
SRC_URI_append = " file://deconfig"
...
xsdb% con6. Measure Power values
Use
[systest] # readpower
7.
[[code]]
=7. All on (PS +
Run below command to load all APU from Linux terminal on board
root@plnx_aarch64:~# fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & };fulload; read;
...
on (PS+PL)8.
=8. PS all
8.1
===8.1 Turn off
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo release_node 69 > /sys/kernel/debug/zynqmp_pm/power
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo request_node 69 > /sys/kernel/debug/zynqmp_pm/power
9.1
===9.1 Power OFF 3
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu3/online
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu3/online
Run following command to get available frequencies.
root@plnx_aarch64:~# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
Run following command to set minimum frequency
root@plnx_aarch64:~# time echo <min freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
Run following command to set maximum frequency
root@plnx_aarch64:~# time echo <max freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
...
and FPD Run following command from Linux terminal to suspend Linux(with FPD on):
root@plnx_aarch64:~# echo 0 > /sys/module/printk/parameters/console_suspend
...
RPU0: Resuming APU.On console, you should able to see suspend/wakeup latency of APU from RPU print message.
...
for latency.12.
=12. R5 Sleep and Deep-Sleep
Once above measurements are done, RPU puts FPD in off state and goes to idle mode (wfi state) for 10 seconds.
To measure power with R5 sleep mode, run "readpower" command from systest in these 10 seconds.
...
RPU0: Running in Split modeAfter 10 seconds timer will generate interrupt and Resumes RPU. Then RPU resumes APU. This state is same as 3 APU off with minimum frequency.
...
from time 13.
=13. Steps to
...
dimmer mode Perform
# Perform steps 1
...
RPU applicationPerform
# Perform step 7
...
load APUrun
# run"readpower" command
...
on mode.Perform
# Perform step 8.1
...
off PL.run
# run"readpower" command
...
all ON.Perform
# Perform step 9.1
...
3 APUs.run
# run"readpower" command
...
off) mode.Perform
# Perform step 10.1
...
scaling(min frequency)run
# run"readpower" command
...
minimum frequency.Perform
# Perform step 11
...
sleep mode.14.
=14. Steps to
...
dimmer mode Step
# Step 11 and
...
dimmer table.Perform
# Perform 10.2 to
...
frequency) .Perform
# Perform 9.2 to
...
all APUs.Perform
# Perform 8.2 to
...
on PL.15.
=15. Example
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Min: 4456, Max: 5301, Avg: 4774
RPU0: FPD off Latency in useconds of Node NODE_APU_0: Min: 74, Max: 75, Avg: 74
...
RPU0: APU0 Wakeup Latency in useconds of Node NODE_APU_0: Min: 9083, Max: 9092, Avg: 9088RPU0: Wakeup Latency in useconds of Node NODE_APU_0: Min: 15163, Max: 121539, Avg: 48056
code
Here,
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Latency for power state transition from "3 APU off (min frequency)" to "Suspend to RAM".
↧
ZU＋ Example - Typical Power States (Reverted to Nov 22, 2017 5:32 pm: Changes Reverted)
...
3. Minimum kernel configurationfollow below steps if latency is to be measured with minimum kernel configuration:
...
config file Rename file as defconfig
Add below line in project-spec/meta-user/recipes-kernel/linux/linux-xlnx_%.bbappend file:
SRC_URI_append = " file://deconfig"
...
xsdb% con6. Measure Power values
Use
[[code]]
=7.
[systest] # readpower
7. All on (PS +
Run below command to load all APU from Linux terminal on board
root@plnx_aarch64:~# fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & };fulload; read;
...
on (PS+PL)=8.
8. PS all
===8.1
8.1 Turn off
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo release_node 69 > /sys/kernel/debug/zynqmp_pm/power
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo request_node 69 > /sys/kernel/debug/zynqmp_pm/power
===9.1
9.1 Power OFF 3
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu3/online
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu3/online
Run following command to get available frequencies.
root@plnx_aarch64:~# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
Run following command to set minimum frequency
root@plnx_aarch64:~# time echo <min freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
Run following command to set maximum frequency
root@plnx_aarch64:~# time echo <max freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
...
and FPD Run following command from Linux terminal to suspend Linux(with FPD on):
root@plnx_aarch64:~# echo 0 > /sys/module/printk/parameters/console_suspend
...
RPU0: Resuming APU.On console, you should able to see suspend/wakeup latency of APU from RPU print message.
...
for latency.=12.
12. R5 Sleep and Deep-Sleep
Once above measurements are done, RPU puts FPD in off state and goes to idle mode (wfi state) for 10 seconds.
To measure power with R5 sleep mode, run "readpower" command from systest in these 10 seconds.
...
RPU0: Running in Split modeAfter 10 seconds timer will generate interrupt and Resumes RPU. Then RPU resumes APU. This state is same as 3 APU off with minimum frequency.
...
from time =13.
13. Steps to
...
dimmer mode # Perform
Perform steps 1
...
RPU application# Perform
Perform step 7
...
load APU# run
run"readpower" command
...
on mode.# Perform
Perform step 8.1
...
off PL.# run
run"readpower" command
...
all ON.# Perform
Perform step 9.1
...
3 APUs.# run
run"readpower" command
...
off) mode.# Perform
Perform step 10.1
...
scaling(min frequency)# run
run"readpower" command
...
minimum frequency.# Perform
Perform step 11
...
sleep mode.=14.
14. Steps to
...
dimmer mode # Step
Step 11 and
...
dimmer table.# Perform
Perform 10.2 to
...
frequency) .# Perform
Perform 9.2 to
...
all APUs.# Perform
Perform 8.2 to
...
on PL.=15.
15. Example
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Min: 4456, Max: 5301, Avg: 4774
RPU0: FPD off Latency in useconds of Node NODE_APU_0: Min: 74, Max: 75, Avg: 74
...
RPU0: APU0 Wakeup Latency in useconds of Node NODE_APU_0: Min: 9083, Max: 9092, Avg: 9088RPU0: Wakeup Latency in useconds of Node NODE_APU_0: Min: 15163, Max: 121539, Avg: 48056
Here,
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Latency for power state transition from "3 APU off (min frequency)" to "Suspend to RAM".
↧
↧
ZU＋ Example - Typical Power States
ZU+ Example - Typical Power States
Under Construction
1. Create1.Create petalinux project
Run below commands from bash terminal to create project petalinux.
source <petalinux-install-dir>/settings.sh
follow below steps if latency is to be measured with minimum kernel configuration:
(config_kernel_min)(defconfig) to project-spec/meta-user/recipes-kernel/linux/files/defconfig
Rename file as defconfig
Add below line in project-spec/meta-user/recipes-kernel/linux/linux-xlnx_%.bbappend file:
SRC_URI_append = " file://deconfig"
6. Measure Power values
Usereadpower command from systestPower Advantage Tool to measure power for each mode.
[systest] # readpower
7.values.
[[code]]
=7. All on (PS +PL)PL)=
Run below command to load all APU from Linux terminal on board
root@plnx_aarch64:~# fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & };fulload; read;
Run "readpower" command from systest. This will give power values for All on (PS+PL)
8.=8. PS all ON
8.1ON=
===8.1 Turn offPLPL===
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo release_node 69 > /sys/kernel/debug/zynqmp_pm/power
8.2===8.2 Turn ON PLPL===
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo request_node 69 > /sys/kernel/debug/zynqmp_pm/power
9.=9. 3 APUs on/off
9.1on/off=
===9.1 Power OFF 3APUsAPUs===
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu3/online
9.2===9.2 Power ON 3 APUsAPUs===
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu3/online
10.=10. Frequency scaling (min freuquency)freuquency)=
Run following command to get available frequencies.
root@plnx_aarch64:~# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
10.1===10.1 Set minimum frequencyfrequency===
Run following command to set minimum frequency
root@plnx_aarch64:~# time echo <min freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
10.2===10.2 Set maximum frequencyfrequency===
Run following command to set maximum frequency
root@plnx_aarch64:~# time echo <max freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
11.=11. Suspend tooffoff=
Run following command from Linux terminal to suspend Linux(with FPD on):
root@plnx_aarch64:~# echo 0 > /sys/module/printk/parameters/console_suspend
On console, you should able to see suspend/wakeup latency of APU from RPU print message.
Note:**Note:** Above loop
12.
=12. R5 Sleep and Deep-Sleepmodemode=
Once above measurements are done, RPU puts FPD in off state and goes to idle mode (wfi state) for 10 seconds.
To measure power with R5 sleep mode, run "readpower" command from systest in these 10 seconds.
After 10 seconds timer will generate interrupt and Resumes RPU. Then RPU resumes APU. This state is same as 3 APU off with minimum frequency.
Note:**Note:"time" commandcommand.
13.command.**
=13. Steps totable
Performtable=
# Perform steps 1
Perform
# Perform step 7
run
# run"readpower" command
Perform
# Perform step 8.1
run
# run"readpower" command
Perform
# Perform step 9.1
run
# run"readpower" command
Perform
# Perform step 10.1
run
# run"readpower" command
Perform
# Perform step 11
14.
=14. Steps totable
Steptable=
# Step 11 and
Perform
# Perform 10.2 to
Perform
# Perform 9.2 to
Perform
# Perform 8.2 to
15.
=15. Exampleloglog=
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Min: 4456, Max: 5301, Avg: 4774
RPU0: FPD off Latency in useconds of Node NODE_APU_0: Min: 74, Max: 75, Avg: 74
RPU0: Wakeup Latency in useconds of Node NODE_APU_0: Min: 15163, Max: 121539, Avg: 48056
code
Here,
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Latency for power state transition from "3 APU off (min frequency)" to "Suspend to RAM".
Under Construction
Run below commands from bash terminal to create project petalinux.
source <petalinux-install-dir>/settings.sh
...
3. Minimum kernel configurationfollow below steps if latency is to be measured with minimum kernel configuration:
...
config file Rename file as defconfig
Add below line in project-spec/meta-user/recipes-kernel/linux/linux-xlnx_%.bbappend file:
SRC_URI_append = " file://deconfig"
...
xsdb% con6. Measure Power values
Use
[systest] # readpower
7.
[[code]]
=7. All on (PS +
Run below command to load all APU from Linux terminal on board
root@plnx_aarch64:~# fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & };fulload; read;
Run "readpower" command from systest. This will give power values for All on (PS+PL)
8.1
===8.1 Turn off
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo release_node 69 > /sys/kernel/debug/zynqmp_pm/power
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo request_node 69 > /sys/kernel/debug/zynqmp_pm/power
9.1
===9.1 Power OFF 3
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu3/online
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu3/online
Run following command to get available frequencies.
root@plnx_aarch64:~# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
Run following command to set minimum frequency
root@plnx_aarch64:~# time echo <min freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
Run following command to set maximum frequency
root@plnx_aarch64:~# time echo <max freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
...
and FPD Run following command from Linux terminal to suspend Linux(with FPD on):
root@plnx_aarch64:~# echo 0 > /sys/module/printk/parameters/console_suspend
...
RPU0: Resuming APU.On console, you should able to see suspend/wakeup latency of APU from RPU print message.
...
for latency.12.
=12. R5 Sleep and Deep-Sleep
Once above measurements are done, RPU puts FPD in off state and goes to idle mode (wfi state) for 10 seconds.
To measure power with R5 sleep mode, run "readpower" command from systest in these 10 seconds.
...
RPU0: Running in Split modeAfter 10 seconds timer will generate interrupt and Resumes RPU. Then RPU resumes APU. This state is same as 3 APU off with minimum frequency.
...
from time 13.
=13. Steps to
...
dimmer mode Perform
# Perform steps 1
...
RPU applicationPerform
# Perform step 7
...
load APUrun
# run"readpower" command
...
on mode.Perform
# Perform step 8.1
...
off PL.run
# run"readpower" command
...
all ON.Perform
# Perform step 9.1
...
3 APUs.run
# run"readpower" command
...
off) mode.Perform
# Perform step 10.1
...
scaling(min frequency)run
# run"readpower" command
...
minimum frequency.Perform
# Perform step 11
...
sleep mode.14.
=14. Steps to
...
dimmer mode Step
# Step 11 and
...
dimmer table.Perform
# Perform 10.2 to
...
frequency) .Perform
# Perform 9.2 to
...
all APUs.Perform
# Perform 8.2 to
...
on PL.15.
=15. Example
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Min: 4456, Max: 5301, Avg: 4774
RPU0: FPD off Latency in useconds of Node NODE_APU_0: Min: 74, Max: 75, Avg: 74
...
RPU0: APU0 Wakeup Latency in useconds of Node NODE_APU_0: Min: 9083, Max: 9092, Avg: 9088RPU0: Wakeup Latency in useconds of Node NODE_APU_0: Min: 15163, Max: 121539, Avg: 48056
code
Here,
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Latency for power state transition from "3 APU off (min frequency)" to "Suspend to RAM".
↧
ZU＋ Example - Typical Power States (Reverted to Nov 22, 2017 5:34 pm: Changes Reverted)
ZU+ Example - Typical Power States
Under Construction
1.Create1. Create petalinux project
Run below commands from bash terminal to create project petalinux.
source <petalinux-install-dir>/settings.sh
follow below steps if latency is to be measured with minimum kernel configuration:
(defconfig)(config_kernel_min) to project-spec/meta-user/recipes-kernel/linux/files/defconfig
Rename file as defconfig
Add below line in project-spec/meta-user/recipes-kernel/linux/linux-xlnx_%.bbappend file:
SRC_URI_append = " file://deconfig"
6. Measure Power values
UsePower Advantage Toolreadpower command from systest to measure power values.
[[code]]
=7.for each mode.
[systest] # readpower
7. All on (PS +PL)= PL)
Run below command to load all APU from Linux terminal on board
root@plnx_aarch64:~# fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & };fulload; read;
Run "readpower" command from systest. This will give power values for All on (PS+PL)
=8.8. PS all ON=
===8.1ON
8.1 Turn offPL=== PL
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo release_node 69 > /sys/kernel/debug/zynqmp_pm/power
===8.28.2 Turn ON PL=== PL
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo request_node 69 > /sys/kernel/debug/zynqmp_pm/power
=9.9. 3 APUs on/off=
===9.1on/off
9.1 Power OFF 3APUs=== APUs
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu3/online
===9.29.2 Power ON 3 APUs=== APUs
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu3/online
=10.10. Frequency scaling (min freuquency)= freuquency)
Run following command to get available frequencies.
root@plnx_aarch64:~# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
===10.110.1 Set minimum frequency=== frequency
Run following command to set minimum frequency
root@plnx_aarch64:~# time echo <min freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
===10.210.2 Set maximum frequency=== frequency
Run following command to set maximum frequency
root@plnx_aarch64:~# time echo <max freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
=11.11. Suspend tooff= off
Run following command from Linux terminal to suspend Linux(with FPD on):
root@plnx_aarch64:~# echo 0 > /sys/module/printk/parameters/console_suspend
On console, you should able to see suspend/wakeup latency of APU from RPU print message.
**Note:**Note: Above loop
=12.
12. R5 Sleep and Deep-Sleepmode= mode
Once above measurements are done, RPU puts FPD in off state and goes to idle mode (wfi state) for 10 seconds.
To measure power with R5 sleep mode, run "readpower" command from systest in these 10 seconds.
After 10 seconds timer will generate interrupt and Resumes RPU. Then RPU resumes APU. This state is same as 3 APU off with minimum frequency.
**Note:Note:"time" commandcommand.**
=13.command.
13. Steps totable=
# Performtable
Perform steps 1
# Perform
Perform step 7
# run
run"readpower" command
# Perform
Perform step 8.1
# run
run"readpower" command
# Perform
Perform step 9.1
# run
run"readpower" command
# Perform
Perform step 10.1
# run
run"readpower" command
# Perform
Perform step 11
=14.
14. Steps totable=
# Steptable
Step 11 and
# Perform
Perform 10.2 to
# Perform
Perform 9.2 to
# Perform
Perform 8.2 to
=15.
15. Examplelog= log
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Min: 4456, Max: 5301, Avg: 4774
RPU0: FPD off Latency in useconds of Node NODE_APU_0: Min: 74, Max: 75, Avg: 74
RPU0: Wakeup Latency in useconds of Node NODE_APU_0: Min: 15163, Max: 121539, Avg: 48056
code
Here,
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Latency for power state transition from "3 APU off (min frequency)" to "Suspend to RAM".
Under Construction
Run below commands from bash terminal to create project petalinux.
source <petalinux-install-dir>/settings.sh
...
3. Minimum kernel configurationfollow below steps if latency is to be measured with minimum kernel configuration:
...
config file Rename file as defconfig
Add below line in project-spec/meta-user/recipes-kernel/linux/linux-xlnx_%.bbappend file:
SRC_URI_append = " file://deconfig"
...
xsdb% con6. Measure Power values
Use
[[code]]
=7.
[systest] # readpower
7. All on (PS +
Run below command to load all APU from Linux terminal on board
root@plnx_aarch64:~# fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & };fulload; read;
Run "readpower" command from systest. This will give power values for All on (PS+PL)
===8.1
8.1 Turn off
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo release_node 69 > /sys/kernel/debug/zynqmp_pm/power
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo request_node 69 > /sys/kernel/debug/zynqmp_pm/power
===9.1
9.1 Power OFF 3
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu3/online
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu3/online
Run following command to get available frequencies.
root@plnx_aarch64:~# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
Run following command to set minimum frequency
root@plnx_aarch64:~# time echo <min freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
Run following command to set maximum frequency
root@plnx_aarch64:~# time echo <max freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
...
and FPD Run following command from Linux terminal to suspend Linux(with FPD on):
root@plnx_aarch64:~# echo 0 > /sys/module/printk/parameters/console_suspend
...
RPU0: Resuming APU.On console, you should able to see suspend/wakeup latency of APU from RPU print message.
...
for latency.=12.
12. R5 Sleep and Deep-Sleep
Once above measurements are done, RPU puts FPD in off state and goes to idle mode (wfi state) for 10 seconds.
To measure power with R5 sleep mode, run "readpower" command from systest in these 10 seconds.
...
RPU0: Running in Split modeAfter 10 seconds timer will generate interrupt and Resumes RPU. Then RPU resumes APU. This state is same as 3 APU off with minimum frequency.
...
from time =13.
13. Steps to
...
dimmer mode # Perform
Perform steps 1
...
RPU application# Perform
Perform step 7
...
load APU# run
run"readpower" command
...
on mode.# Perform
Perform step 8.1
...
off PL.# run
run"readpower" command
...
all ON.# Perform
Perform step 9.1
...
3 APUs.# run
run"readpower" command
...
off) mode.# Perform
Perform step 10.1
...
scaling(min frequency)# run
run"readpower" command
...
minimum frequency.# Perform
Perform step 11
...
sleep mode.=14.
14. Steps to
...
dimmer mode # Step
Step 11 and
...
dimmer table.# Perform
Perform 10.2 to
...
frequency) .# Perform
Perform 9.2 to
...
all APUs.# Perform
Perform 8.2 to
...
on PL.=15.
15. Example
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Min: 4456, Max: 5301, Avg: 4774
RPU0: FPD off Latency in useconds of Node NODE_APU_0: Min: 74, Max: 75, Avg: 74
...
RPU0: APU0 Wakeup Latency in useconds of Node NODE_APU_0: Min: 9083, Max: 9092, Avg: 9088RPU0: Wakeup Latency in useconds of Node NODE_APU_0: Min: 15163, Max: 121539, Avg: 48056
Here,
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Latency for power state transition from "3 APU off (min frequency)" to "Suspend to RAM".
↧
ZU＋ Example - Typical Power States
...
xsdb% con6. Measure Power values
Use
[systest] # readpower
7.
[[code]]
=7. All on (PS +
Run below command to load all APU from Linux terminal on board
root@plnx_aarch64:~# fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & };fulload; read;
Run "readpower" command from systest. This will give power values for All on (PS+PL)
8.1
===8.1 Turn off
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo release_node 69 > /sys/kernel/debug/zynqmp_pm/power
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo request_node 69 > /sys/kernel/debug/zynqmp_pm/power
9.1
===9.1 Power OFF 3
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu3/online
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu3/online
Run following command to get available frequencies.
root@plnx_aarch64:~# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
Run following command to set minimum frequency
root@plnx_aarch64:~# time echo <min freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
Run following command to set maximum frequency
root@plnx_aarch64:~# time echo <max freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
...
and FPD Run following command from Linux terminal to suspend Linux(with FPD on):
root@plnx_aarch64:~# echo 0 > /sys/module/printk/parameters/console_suspend
...
RPU0: Resuming APU.On console, you should able to see suspend/wakeup latency of APU from RPU print message.
...
for latency.12.
=12. R5 Sleep and Deep-Sleep
Once above measurements are done, RPU puts FPD in off state and goes to idle mode (wfi state) for 10 seconds.
To measure power with R5 sleep mode, run "readpower" command from systest in these 10 seconds.
...
RPU0: Running in Split modeAfter 10 seconds timer will generate interrupt and Resumes RPU. Then RPU resumes APU. This state is same as 3 APU off with minimum frequency.
...
from time 13.
=13. Steps to
...
dimmer mode Perform
# Perform steps 1
...
RPU applicationPerform
# Perform step 7
...
load APUrun
# run"readpower" command
...
on mode.Perform
# Perform step 8.1
...
off PL.run
# run"readpower" command
...
all ON.Perform
# Perform step 9.1
...
3 APUs.run
# run"readpower" command
...
off) mode.Perform
# Perform step 10.1
...
scaling(min frequency)run
# run"readpower" command
...
minimum frequency.Perform
# Perform step 11
...
sleep mode.14.
=14. Steps to
...
dimmer mode Step
# Step 11 and
...
dimmer table.Perform
# Perform 10.2 to
...
frequency) .Perform
# Perform 9.2 to
...
all APUs.Perform
# Perform 8.2 to
...
on PL.15.
=15. Example
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Min: 4456, Max: 5301, Avg: 4774
RPU0: FPD off Latency in useconds of Node NODE_APU_0: Min: 74, Max: 75, Avg: 74
...
RPU0: APU0 Wakeup Latency in useconds of Node NODE_APU_0: Min: 9083, Max: 9092, Avg: 9088RPU0: Wakeup Latency in useconds of Node NODE_APU_0: Min: 15163, Max: 121539, Avg: 48056
code
Here,
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Latency for power state transition from "3 APU off (min frequency)" to "Suspend to RAM".
↧
ZU＋ Example - Typical Power States (Reverted to Nov 22, 2017 5:36 pm: Changes Reverted)
...
xsdb% con6. Measure Power values
Use
[[code]]
=7.
[systest] # readpower
7. All on (PS +
Run below command to load all APU from Linux terminal on board
root@plnx_aarch64:~# fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & };fulload; read;
Run "readpower" command from systest. This will give power values for All on (PS+PL)
===8.1
8.1 Turn off
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo release_node 69 > /sys/kernel/debug/zynqmp_pm/power
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo request_node 69 > /sys/kernel/debug/zynqmp_pm/power
===9.1
9.1 Power OFF 3
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu3/online
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu3/online
Run following command to get available frequencies.
root@plnx_aarch64:~# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
Run following command to set minimum frequency
root@plnx_aarch64:~# time echo <min freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
Run following command to set maximum frequency
root@plnx_aarch64:~# time echo <max freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
...
and FPD Run following command from Linux terminal to suspend Linux(with FPD on):
root@plnx_aarch64:~# echo 0 > /sys/module/printk/parameters/console_suspend
...
RPU0: Resuming APU.On console, you should able to see suspend/wakeup latency of APU from RPU print message.
...
for latency.=12.
12. R5 Sleep and Deep-Sleep
Once above measurements are done, RPU puts FPD in off state and goes to idle mode (wfi state) for 10 seconds.
To measure power with R5 sleep mode, run "readpower" command from systest in these 10 seconds.
...
RPU0: Running in Split modeAfter 10 seconds timer will generate interrupt and Resumes RPU. Then RPU resumes APU. This state is same as 3 APU off with minimum frequency.
...
from time =13.
13. Steps to
...
dimmer mode # Perform
Perform steps 1
...
RPU application# Perform
Perform step 7
...
load APU# run
run"readpower" command
...
on mode.# Perform
Perform step 8.1
...
off PL.# run
run"readpower" command
...
all ON.# Perform
Perform step 9.1
...
3 APUs.# run
run"readpower" command
...
off) mode.# Perform
Perform step 10.1
...
scaling(min frequency)# run
run"readpower" command
...
minimum frequency.# Perform
Perform step 11
...
sleep mode.=14.
14. Steps to
...
dimmer mode # Step
Step 11 and
...
dimmer table.# Perform
Perform 10.2 to
...
frequency) .# Perform
Perform 9.2 to
...
all APUs.# Perform
Perform 8.2 to
...
on PL.=15.
15. Example
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Min: 4456, Max: 5301, Avg: 4774
RPU0: FPD off Latency in useconds of Node NODE_APU_0: Min: 74, Max: 75, Avg: 74
...
RPU0: APU0 Wakeup Latency in useconds of Node NODE_APU_0: Min: 9083, Max: 9092, Avg: 9088RPU0: Wakeup Latency in useconds of Node NODE_APU_0: Min: 15163, Max: 121539, Avg: 48056
Here,
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Latency for power state transition from "3 APU off (min frequency)" to "Suspend to RAM".
↧
↧
ZU＋ Example - Typical Power States
...
xsdb% con6. Measure Power values
Use
[systest] # readpower
7.
[[code]]
=7. All on (PS +
Run below command to load all APU from Linux terminal on board
root@plnx_aarch64:~# fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & };fulload; read;
Run "readpower" command from systest. This will give power values for All on (PS+PL)
8.1
===8.1 Turn off
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo release_node 69 > /sys/kernel/debug/zynqmp_pm/power
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo request_node 69 > /sys/kernel/debug/zynqmp_pm/power
9.1
===9.1 Power OFF 3
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu3/online
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu3/online
Run following command to get available frequencies.
root@plnx_aarch64:~# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
Run following command to set minimum frequency
root@plnx_aarch64:~# time echo <min freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
Run following command to set maximum frequency
root@plnx_aarch64:~# time echo <max freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
...
and FPD Run following command from Linux terminal to suspend Linux(with FPD on):
root@plnx_aarch64:~# echo 0 > /sys/module/printk/parameters/console_suspend
...
RPU0: Resuming APU.On console, you should able to see suspend/wakeup latency of APU from RPU print message.
...
for latency.12.
=12. R5 Sleep and Deep-Sleep
Once above measurements are done, RPU puts FPD in off state and goes to idle mode (wfi state) for 10 seconds.
To measure power with R5 sleep mode, run "readpower" command from systest in these 10 seconds.
...
RPU0: Running in Split modeAfter 10 seconds timer will generate interrupt and Resumes RPU. Then RPU resumes APU. This state is same as 3 APU off with minimum frequency.
...
from time 13.
=13. Steps to
...
dimmer mode Perform
# Perform steps 1
...
RPU applicationPerform
# Perform step 7
...
load APUrun
# run"readpower" command
...
on mode.Perform
# Perform step 8.1
...
off PL.run
# run"readpower" command
...
all ON.Perform
# Perform step 9.1
...
3 APUs.run
# run"readpower" command
...
off) mode.Perform
# Perform step 10.1
...
scaling(min frequency)run
# run"readpower" command
...
minimum frequency.Perform
# Perform step 11
...
sleep mode.14.
=14. Steps to
...
dimmer mode Step
# Step 11 and
...
dimmer table.Perform
# Perform 10.2 to
...
frequency) .Perform
# Perform 9.2 to
...
all APUs.Perform
# Perform 8.2 to
...
on PL.15.
=15. Example
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Min: 4456, Max: 5301, Avg: 4774
RPU0: FPD off Latency in useconds of Node NODE_APU_0: Min: 74, Max: 75, Avg: 74
...
RPU0: APU0 Wakeup Latency in useconds of Node NODE_APU_0: Min: 9083, Max: 9092, Avg: 9088RPU0: Wakeup Latency in useconds of Node NODE_APU_0: Min: 15163, Max: 121539, Avg: 48056
code
Here,
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Latency for power state transition from "3 APU off (min frequency)" to "Suspend to RAM".
↧
ZU＋ Example - Typical Power States (Reverted to Nov 22, 2017 5:38 pm: Changes Reverted)
...
xsdb% con6. Measure Power values
Use
[[code]]
=7.
[systest] # readpower
7. All on (PS +
Run below command to load all APU from Linux terminal on board
root@plnx_aarch64:~# fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & };fulload; read;
Run "readpower" command from systest. This will give power values for All on (PS+PL)
===8.1
8.1 Turn off
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo release_node 69 > /sys/kernel/debug/zynqmp_pm/power
Run below command from Linux terminal on board to power off PL (force power down unused PU).
root@plnx_aarch64:~# echo request_wakeup 8 1 0 1 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# echo force_powerdown 8 > /sys/kernel/debug/zynqmp_pm/power
root@plnx_aarch64:~# time echo request_node 69 > /sys/kernel/debug/zynqmp_pm/power
===9.1
9.1 Power OFF 3
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 0 > /sys/devices/system/cpu/cpu3/online
Run below command from Linux terminal on board to power off 3 APUs.
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu1/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu2/online
root@plnx_aarch64:~# time echo 1 > /sys/devices/system/cpu/cpu3/online
Run following command to get available frequencies.
root@plnx_aarch64:~# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
Run following command to set minimum frequency
root@plnx_aarch64:~# time echo <min freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
Run following command to set maximum frequency
root@plnx_aarch64:~# time echo <max freq. from above command> > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
...
and FPD Run following command from Linux terminal to suspend Linux(with FPD on):
root@plnx_aarch64:~# echo 0 > /sys/module/printk/parameters/console_suspend
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RPU0: Resuming APU.On console, you should able to see suspend/wakeup latency of APU from RPU print message.
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for latency.=12.
12. R5 Sleep and Deep-Sleep
Once above measurements are done, RPU puts FPD in off state and goes to idle mode (wfi state) for 10 seconds.
To measure power with R5 sleep mode, run "readpower" command from systest in these 10 seconds.
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RPU0: Running in Split modeAfter 10 seconds timer will generate interrupt and Resumes RPU. Then RPU resumes APU. This state is same as 3 APU off with minimum frequency.
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from time =13.
13. Steps to
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dimmer mode # Perform
Perform steps 1
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RPU application# Perform
Perform step 7
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load APU# run
run"readpower" command
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on mode.# Perform
Perform step 8.1
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off PL.# run
run"readpower" command
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all ON.# Perform
Perform step 9.1
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3 APUs.# run
run"readpower" command
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off) mode.# Perform
Perform step 10.1
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scaling(min frequency)# run
run"readpower" command
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minimum frequency.# Perform
Perform step 11
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sleep mode.=14.
14. Steps to
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dimmer mode # Step
Step 11 and
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dimmer table.# Perform
Perform 10.2 to
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frequency) .# Perform
Perform 9.2 to
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all APUs.# Perform
Perform 8.2 to
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on PL.=15.
15. Example
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Min: 4456, Max: 5301, Avg: 4774
RPU0: FPD off Latency in useconds of Node NODE_APU_0: Min: 74, Max: 75, Avg: 74
...
RPU0: APU0 Wakeup Latency in useconds of Node NODE_APU_0: Min: 9083, Max: 9092, Avg: 9088RPU0: Wakeup Latency in useconds of Node NODE_APU_0: Min: 15163, Max: 121539, Avg: 48056
Here,
RPU0: Request Suspend Latency in useconds of Node NODE_APU_0: Latency for power state transition from "3 APU off (min frequency)" to "Suspend to RAM".
↧
ZU＋ Example - Typical Power States
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xsdb% con6. Measure Power values
Use
[systest] # readpower
7. All on (PS + PL)
Run below command to load all APU from Linux terminal on board
↧
ZU＋ Example - Typical Power States
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3. Minimum kernel configurationfollow below steps if latency is to be measured with minimum kernel configuration:
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config file Rename file as defconfig
Add below line in project-spec/meta-user/recipes-kernel/linux/linux-xlnx_%.bbappend file:
SRC_URI_append = " file://deconfig"
...
Run below command to load all APU from Linux terminal on boardroot@plnx_aarch64:~# fulload() { dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null | dd if=/dev/zero of=/dev/null & };fulload; read;
8. PS all ON
8.1 Turn off PL
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RPU0: Go to deep sleepAfter 10 seconds RPU gets timer interrupt after that it suspend itself and goes to deep sleep mode for 10 seconds.
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to deep Following are two print messages to identify these 10 second window.
RPU0: Go to deep sleep
↧
↧
ZU＋ Example - Typical Power States
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root@plnx_aarch64:~# echo MMIO_WRITE 0xFFD80064 1 1 > /sys/kernel/debug/zynqmp_pm/powerNow, Linux will be suspended and it will be resumed by RPU after suspend. RPU has requested NODE_SATA from FPD, so Linux will be suspended with FPD on.
...
be off. Following are two print messages to identify these 10 second window.
RPU0: Suspended to RAM, FPD is on
(10 seconds delay)
RPU0: Release NODE_SATA, FPD will be off after releasing NODE_SATA
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FPD off, Following are two print messages to identify these 10 second window.
RPU0: Suspended.
...
12. R5 Sleep and Deep-Sleep modeOnce above measurements are done, RPU puts FPD in off state and goes to idle mode (wfi state) for 10 seconds.
...
sleep mode, Following are two print messages to identify these 10 second window.
RPU0: Go to RPU Sleep mode
...
Perform steps 1 to 5 to start Linux and RPU applicationPerform step 7 to load APU
Perform step 8.1 to turn off PL.
Perform step 9.1 to turn of 3 APUs.
Perform step 10.1 to frequency scaling(min frequency)
Perform step 11 and 12 to measure power/latency for suspend to RAM, FPD off, RPU sleep, Deep sleep mode.
14. Steps to Measure latency/power from right to left of dimmer mode table
↧
ZU＋ Example - Typical Power States
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follow below steps if latency is to be measured with minimum kernel configuration:Copy kernel min config file (defconfig) to project-spec/meta-user/recipes-kernel/linux/files/defconfig
{defconfig}
Add below line in project-spec/meta-user/recipes-kernel/linux/linux-xlnx_%.bbappend file:
SRC_URI_append = " file://deconfig"
...
5.2. Run RPU appIf XSDB method is used to start linux, this step should be skipped.
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Application source) {rpu_deep_sleep.elf}
Perform following command on xsdb
xsdb% connect
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ZU＋ Example - Typical Power States
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{defconfig} Add below line in project-spec/meta-user/recipes-kernel/linux/linux-xlnx_%.bbappend file:
...
= " 4. Build petalinux
petalinux-build -c kernel
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