I'm using Linaro Release 15.12 LSK (without OP-TEE) + OpenEmbedded Minimal Filesystem on Juno-r1 Board.
I'm trying to put the Juno board into the Sleep-state referring to ARM Versatile Express Juno r1 Development Platform Technical Reference Manual.
But it seems to reboot and fall into the error state, even if I push the Soft Reset button briefly.
Does anyone know how to put the Juno board into the Sleep-state ?
Thank you for your help.
------------Moderator edit: As of release 16.05 you can follow the instructions here:https://community.arm.com/dev-platforms/w/docs/239/system-suspend-to-ram------------
Hi,
Running v4.4 on Juno is quite simple. Just build for defconfig.
Anyways as I mentioned earlier I have tested Juno wakeup on
RTC alarm atleast. There are other interrupts like GPIO keys
which can ideally be used but for reasons yet to root-caused
they are not working when GIC is powered-down which is the
case when the system suspend is executed.
Hope that helps.
Regards,
Sudeep
Thank you for letting me know !
Thanks to your advice, I could run v4.4 kernel building for defconfig + CONFIG_RTC_DRV_PL031 on Juno.Also, I could confirm Juno resumes from System-Suspend by the RTC alarm though there were some warning messages.However, to succeed in resuming is only one out of several times. How about when you tested it ?
I'm using the following software on Juno R1 board.
Linux kernel + juno-r1.dtb : v4.4 kernel.org Others ( including u-boot ) : Linaro Release 15.12 Latest Filesystem : OpenEmbedded Minimal 15.10
Once again, thank you for your time.