TDA4VH-Q1: will TDA4VH support suspend to RAM in future SDK?

epoll

Part Number: TDA4VH-Q1
Other Parts Discussed in Thread: TDA4VH

I see other post said S2R(suspend to ram) wll be supported in SDK Linux 9.1. (AM62A7: support Suspend-to-RAM (Deep Sleep) - Processors forum - Processors - TI E2E support forums)

Will TDA4VH support suspend to RAM in SDK Linux 9.1?

Currently, I commented out the judging the capability of deep sleep code in atf, and run "cat /sys/power/mem_sleep"，can see the "deep" option. Then I also commented out the judging the capability of deep sleep code in Linux ti_sci suspend function, and it can normally send "TI_SCI_MSG_PREPARE_SLEEP" message, but got no response. I guess deep sleep is not supported by sysfw currently. Will TDA4VH support suspend to RAM in SDK Linux 9.1 or future? If not, what can I do to support this feature? Or this feature must be implemented by SDK?

Thanks!

over 1 year ago

+1 Keerthy J over 1 year ago

TI__Guru**** 163290 points

Hi,

Suspend to RAM will still not be part of 9.1 SDK. The plan is not frozen. Please check release notes of future 9.x SDKs.

- Keerthy

0 epoll over 1 year ago in reply to Keerthy J

Prodigy 90 points

Thanks for reply. Upon observation, I have noticed that when Linux sends the "TISCI_MSG_VALUE_DEVICE_SW_STATE_ON" message to the device, it does not result in a power-off action due to the lack of implementation of this code in the sysfw, am I correct?

0 Keerthy J over 1 year ago in reply to epoll

TI__Guru**** 163290 points

It's a complex feature across cores. This is not implemented. What you have identified is the starting of the implementation chain.

Thanks,

Keerthy

0 epoll over 1 year ago in reply to Keerthy J

Prodigy 90 points

I got it. Thank you!