Do not want auto suspend

[wangtsungli]

Hi community,

I'm working on i.MX6 Quad sabre-SD platform and build my image for Android 6.0.

Since my hardware design has no PMIC on it, I do a lot of work on uboot and kernel driver.

So far my machine can start server now but I face a new problem now.

After my machine booting success and get into system, my machine will auto suspend and cannot wake up again.

Below is log for suspend.

PM: suspend entry 1970-01-01 00:01:44.146406678 UTC

PM: Syncing filesystems ... done.
Freezing user space processes ...
PM: Wakeup pending, aborting suspend
active wakeup source: PowerManagerService.Broadcasts

Freezing of tasks aborted after 0.009 seconds
Restarting tasks ... done.
PM: suspend exit 1970-01-01 00:01:44.188327678 UTC
PM: suspend entry 1970-01-01 00:01:44.293293345 UTC
PM: Syncing filesystems ... done.
Freezing user space processes ... (elapsed 0.001 seconds) done.
Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
Suspending console(s) (use no_console_suspend to debug)
PM: suspend of devices complete after 90.926 msecs
PM: suspend devices took 0.090 seconds
PM: late suspend of devices complete after 0.948 msecs
PM: noirq suspend of devices complete after 1.016 msecs
Disabling non-boot CPUs ...
CPU1: shutdown
CPU2: shutdown
CPU3: shutdown
Resume caused by IRQ 51
Suspended for 0.000 seconds
Enabling non-boot CPUs ...
CPU1 is up
CPU2 is up
CPU3 is up
PM: noirq resume of devices complete after 0.825 msecs
PM: early resume of devices complete after 0.512 msecs
usb 1-1: reset high-speed USB device number 5 using ci_hdrc
usb 1-1: device descriptor read/all, error -71
usb 1-1: reset high-speed USB device number 5 using ci_hdrc
dpm_run_callback(): usb_dev_resume+0x0/0x10 returns -71
PM: Device 1-1 failed to resume async: error -71
PM: resume of devices complete after 632.085 msecs
PM: resume devices took 0.630 seconds
Restarting tasks ...
usb 1-1: USB disconnect, device number 5
done.
PM: suspend exit 1970-01-01 00:01:47.708025334 UTC
PM: suspend entry 1970-01-01 00:01:47.808199334 UTC
PM: Syncing filesystems ...
usb 1-1: new high-speed USB device number 6 using ci_hdrc
done.
Freezing user space processes ... (elapsed 0.001 seconds) done.
Freezing remaining freezable tasks ...
usb 1-1: New USB device found, idVendor=0424, idProduct=2514
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
hub 1-1:1.0: USB hub found
PM: Wakeup pending, aborting suspend
active wakeup source: NETLINK

Freezing of tasks aborted after 0.157 secondshub 1-1:1.0: config failed, can't read hub descriptor (err -22)

Restarting kernel threads ... done.
Restarting tasks ... done.
PM: suspend exit 1970-01-01 00:01:48.017854000 UTC
PM: suspend entry 1970-01-01 00:01:48.123030334 UTC
PM: Syncing filesystems ... done.
Freezing user space processes ...
usb 1-1: reset high-speed USB device number 6 using ci_hdrc
usb 1-1: device firmware changed
usb 1-1: USB disconnect, device number 6
(elapsed 0.228 seconds) done.
Freezing remaining freezable tasks ...
PM: Wakeup pending, aborting suspend
active wakeup source: NETLINK

Freezing of tasks aborted after 0.006 seconds
Restarting kernel threads ... done.
Restarting tasks ... done.
PM: suspend exit 1970-01-01 00:01:48.404555667 UTC
usb 1-1: new high-speed USB device number 7 using ci_hdrc
PM: suspend entry 1970-01-01 00:01:48.509662334 UTC
PM: Syncing filesystems ... done.
Freezing user space processes ... (elapsed 0.001 seconds) done.
Freezing remaining freezable tasks ...
usb 1-1: New USB device found, idVendor=0424, idProduct=2514
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
hub 1-1:1.0: USB hub found
PM: Wakeup pending, aborting suspend
active wakeup source: NETLINK

Freezing of tasks aborted after 0.143 secondshub 1-1:1.0: config failed, can't read hub descriptor (err -22)

Restarting kernel threads ... done.
Restarting tasks ... done.
PM: suspend exit 1970-01-01 00:01:48.699621001 UTC
PM: suspend entry 1970-01-01 00:01:48.804633001 UTC
PM: Syncing filesystems ... done.
Freezing user space processes ... (elapsed 0.001 seconds) done.
Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
Suspending console(s) (use no_console_suspend to debug)
PM: suspend of devices complete after 86.780 msecs
PM: suspend devices took 0.090 seconds
PM: late suspend of devices complete after 0.958 msecs
PM: noirq suspend of devices complete after 1.057 msecs
Disabling non-boot CPUs ...
CPU1: shutdown
CPU2: shutdown
CPU3: shutdown
Resume caused by IRQ 51
Suspended for 0.000 seconds
Enabling non-boot CPUs ...
CPU1 is up
CPU2 is up
CPU3 is up
PM: noirq resume of devices complete after 0.903 msecs
PM: early resume of devices complete after 0.533 msecs
usb 1-1: reset high-speed USB device number 7 using ci_hdrc
usb 1-1: device firmware changed
PM: resume of devices complete after 347.815 msecs
PM: resume devices took 0.350 seconds
Restarting tasks ...
usb 1-1: USB disconnect, device number 7
done.
PM: suspend exit 1970-01-01 00:01:53.407441666 UTC
PM: suspend entry 1970-01-01 00:01:53.512178666 UTC
PM: Syncing filesystems ...
usb 1-1: new high-speed USB device number 8 using ci_hdrc
done.
Freezing user space processes ... (elapsed 0.001 seconds) done.
Freezing remaining freezable tasks ...
usb 1-1: unable to read config index 0 descriptor/start: -32
usb 1-1: chopping to 0 config(s)
usb 1-1: New USB device found, idVendor=0424, idProduct=2514
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
usb 1-1: no configuration chosen from 0 choices
(elapsed 0.158 seconds) done.
Suspending console(s) (use no_console_suspend to debug)
PM: Wakeup pending, aborting suspend
active wakeup source: NETLINK
device_prepare(): pm_genpd_prepare+0x0/0x1f0 returns -16
PM: Device 2040000.vpu_fsl not prepared for power transition: code -16
PM: Some devices failed to suspend, or early wake event detected
PM: resume of devices complete after 0.002 msecs
cpufreq: cpufreq_resume: Failed to start governor for policy: d2716800
PM: resume devices took 0.000 seconds
Restarting tasks ... done.
PM: suspend exit 1970-01-01 00:01:53.753755333 UTC
PM: suspend entry 1970-01-01 00:01:53.858500666 UTC
PM: Syncing filesystems ... done.
Freezing user space processes ... (elapsed 0.001 seconds) done.
Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
Suspending console(s) (use no_console_suspend to debug)
PM: suspend of devices complete after 77.453 msecs
PM: suspend devices took 0.070 seconds
PM: late suspend of devices complete after 0.946 msecs
PM: noirq suspend of devices complete after 1.031 msecs
Disabling non-boot CPUs ...
CPU1: shutdown
CPU2: shutdown
CPU3: shutdown
Resume caused by IRQ 51
Resume caused by IRQ 58
Suspended for 0.000 seconds
Enabling non-boot CPUs ...
CPU1 is up
CPU2 is up
CPU3 is up
PM: noirq resume of devices complete after 0.463 msecs
PM: early resume of devices complete after 0.494 msecs
usb 1-1: reset high-speed USB device number 8 using ci_hdrc
usb 1-1: device descriptor read/all, error -71
usb 1-1: reset high-speed USB device number 8 using ci_hdrc
usb 1-1: device firmware changed
PM: resume of devices complete after 617.675 msecs
PM: resume devices took 0.620 seconds
Restarting tasks ...
usb 1-1: USB disconnect, device number 8
done.
PM: suspend exit 1970-01-01 00:06:45.688142667 UTC
PM: suspend entry 1970-01-01 00:06:45.792953000 UTC
PM: Syncing filesystems ...
usb 1-1: new high-speed USB device number 9 using ci_hdrc
done.
Freezing user space processes ... (elapsed 0.001 seconds) done.
Freezing remaining freezable tasks ...
usb 1-1: New USB device found, idVendor=0424, idProduct=2514
usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
hub 1-1:1.0: USB hub found
PM: Wakeup pending, aborting suspend
active wakeup source: NETLINK

Freezing of tasks aborted after 0.147 seconds
Restarting kernel threads ... done.
Restarting tasks ... done.
PM: suspend exit 1970-01-01 00:06:45.989388334 UTC
hub 1-1:1.0: config failed, can't read hub descriptor (err -22)
PM: suspend entry 1970-01-01 00:06:46.094411667 UTC
PM: Syncing filesystems ... done.
Freezing user space processes ... (elapsed 0.001 seconds) done.
Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
Suspending console(s) (use no_console_suspend to debug)

Is that mean my machine get into suspend mode?

If it is how can I avoid it?

Why my machine cannot use debug port to send command after suspend and how can I wake it up?

Thanks in Advanced!

[igorpadykov]

Hi tsung

one can try to narrow down problem disabling low power mode with

adding kernel boot parameter enable_wait_mode=off, use maximum operating frequency

with CPUFREQ driver described in Chapter 23 CPU Frequency Scaling (CPUFREQ) Driver

attached Linux Manual, try to disable the bus frequency driver, described in sect.24.1.2

Best regards
igor
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[wangtsungli]

igorpadykov‌

I tried it when get into system.

But it still get into suspend mode.

And console still cannot work even I add no_console_suspend=1 on u-boot environment.

I tried to disabled the gpio_keys.c than get log like below.

PM: suspend entry 1970-01-01 00:00:34.956435337 UTC

PM: Syncing filesystems ... done.
Freezing user space processes ...
PM: Wakeup pending, aborting suspend
active wakeup source: PowerManagerService.Broadcasts

Freezing of tasks aborted after 0.008 seconds
Restarting tasks ... done.
PM: suspend exit 1970-01-01 00:00:34.997838337 UTC
PM: suspend entry 1970-01-01 00:00:35.102658337 UTC
PM: Syncing filesystems ... done.
Freezing user space processes ... (elapsed 0.001 seconds) done.
Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
PM: suspend of devices complete after 89.080 msecs
PM: suspend devices took 0.090 seconds
PM: late suspend of devices complete after 0.930 msecs
PM: noirq suspend of devices complete after 0.940 msecs
Disabling non-boot CPUs ...
CPU1: shutdown
CPU2: shutdown
CPU3: shutdown

Since I did not set any power key so cpu would not resume after suspend.

Still the same problem why system will get into suspend mode?

And how can I avoid it?

For kernel driver I disabled autosuspend, I think it shouldn't get into suspend by itself.

But it did!

How can I fix this issue?

Thanks in Advanced!