AM3352: Linux Power management options

Fumihiko Tokioka

Part Number: AM3352

The following options exist, but regarding the functions of each
What kind of function will it work as?

#
# Power management options
#
CONFIG_SUSPEND=y
CONFIG_SUSPEND_FREEZER=y
# CONFIG_SUSPEND_SKIP_SYNC is not set
# CONFIG_HIBERNATION is not set
CONFIG_PM_SLEEP=y
# CONFIG_PM_AUTOSLEEP is not set
# CONFIG_PM_WAKELOCKS is not set
CONFIG_PM=y
CONFIG_PM_DEBUG=y
# CONFIG_PM_ADVANCED_DEBUG is not set
# CONFIG_PM_TEST_SUSPEND is not set
CONFIG_PM_SLEEP_DEBUG=y
# CONFIG_DPM_WATCHDOG is not set
# CONFIG_APM_EMULATION is not set
CONFIG_PM_CLK=y
# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
CONFIG_CPU_PM=y
CONFIG_ARCH_SUSPEND_POSSIBLE=y
CONFIG_ARM_CPU_SUSPEND=y
CONFIG_ARCH_HIBERNATION_POSSIBLE=y
# end of Power management options

over 2 years ago

0 Bin Liu over 2 years ago

TI__Guru**** 170671 points

Hi Tokioka-san,

I am not sure what your question is. Can you please elaborate?

0 Fumihiko Tokioka over 2 years ago

Prodigy 20 points

I am using AM3352 Linux/arm 5.4.106.

By enabling the following:
LINUXSDK-AM35X: Linux version 5.4.106 The OS is deadlocked.
The timing also occurs indefinitely.
CONFIG_SLEEP=y

If you disable CONFIG_SLEEP,
CONFIG_SLEEP=n
If you do so, the OS deadlock will not occur.

By setting CONFIG_SLEEP=y, The OS is deadlocked
Do you ever experience this phenomenon?

0 Bin Liu over 2 years ago in reply to Fumihiko Tokioka

TI__Guru**** 170671 points

Fumihiko Tokioka said:
If you disable CONFIG_SLEEP,
CONFIG_SLEEP=n
If you do so, the OS deadlock will not occur.

By setting CONFIG_SLEEP=y, The OS is deadlocked
Do you ever experience this phenomenon?

Do you mean CONFIG_PM_SLEEP? kernel v5.4 doesn't have CONFIG_SLEEP config option.

0 Fumihiko Tokioka over 2 years ago in reply to Fumihiko Tokioka

Prodigy 20 points

The mistake was CONFIG_CPU_IDLE, not CONFIG_SLEEP.

By enabling the following:
LINUXSDK-AM35X: Linux version 5.4.106 The OS is deadlocked.
The timing also occurs indefinitely.
CONFIG_CPU_IDLE=y

If you disable CONFIG_CPU_IDLE,
CONFIG_CPU_IDLE=n
If you do so, the OS deadlock will not occur.

0 Bin Liu over 2 years ago in reply to Fumihiko Tokioka

TI__Guru**** 170671 points

Hi Tokioka-san,

I believe CONFIG_CPU_IDLE is enabled by default in Processor SDK Linux release.

Do you have such issue on AM335x EVM or your custom board?

Do you have any log showing the issue?

Processors

Processors forum

AM3352: Linux Power management options