S32G Wakeup from Sleep Mode

[JanBerlin]

Hi, I have an S32G-VNP-RDB2 but would consider myself a newbie. I can bring the system successfully to sleep mode via

echo mem > /sys/power/state

however I can't wake it up. Wake-on-LAN does not seem to be supported, I tried to send "Magic packet" with MAC address but no luck. The only way to revert this is via cold boot which I don't want. I checked the docs but could not really find anything obvious. Any simple/straightforward way to do this? Thanks!

[Daniel-Aguirre]

Hi,

Which BSP version are you using?

It seems that this situation might have already been discussed under the following thread:

Wake On LAN for S32G2 RDB2 [Autolinux BSP v33] - NXP Community

Don't know if it is useful.

Please, let us know.

[JanBerlin]

Hi, yeah, regarding BSP this is where it already starts - from boot log / dmesg I get

CPU: NXP S32G274A rev. 2.1.0
Linux version 5.10.41-rt42-05767-g120665743a9d

but BSP is never clearly mentioned.

I checked the link you added, read that and have the same behaviour, so this comes up during boot:

[ 1.035735] s32cc-dwmac 4033c000.ethernet: Wake-Up On Lan supported

So in theory it should work. But it doesn't. The board has six LAN ports, maybe this is only supported on one?

[Daniel-Aguirre]

Hi,

Thanks for your feedback. The BSP version should be shown prior to the boot log or it is shown prior to the user being input on the console:

...

Also, as told under the thread, there is no NXP documentation about this specific implementation. There is though the GMAC Subsystem RM available under the S32G2 product page (link: S32G2 Safe and Secure Vehicle Network Processor | NXP Semiconductors) which shows the following [Page 100, GMAC Subsystem RM, Rev. 2, 03/2021]:

For which, the feature should be available.

Please, let us know.