OMAP4430 Panda uart serial wakeup from static suspend retention not working on linux-omap

Madhusudhan Gowda

Hi,

I tried to wakeup OMAP4430 ES2.1 Panda from static memory suspend (retention) using serial console uart2 on latest linux-omap master branch, it doesn’t wakeup.

But I could enable wakeup capability bit for GPIO_121 on Panda which wakes up fine from retention.

On the serial uart side I have manually enabled wakeup by echo enabled > /sys/devices/platform/omap_uart.2/tty/ttyO2/power/wakeup

I could verify that before entering static suspend in the idle path the uart irrx pad register is set with wakeup enable bit (1<<14).

Even I posted same mail to linux-omap mailing list but did not get any reply on it. Could someone point me what I could be missing?

Thanks,

Gowda

over 13 years ago

0 Manuel Contreras over 13 years ago

TI__Genius 10545 points

There is this other post that talks about similar issue,

http://e2e.ti.com/support/omap/f/849/t/214828.aspx

0 Madhusudhan Gowda over 13 years ago in reply to Manuel Contreras

Prodigy 20 points

Hi Manuel,

Thanks for the reply.

The url tries to open the webmail.ti.com. Is it possible to paste the content or attach it some how.

Thanks,

Gowda

0 Gina Glaser over 13 years ago in reply to Madhusudhan Gowda

TI__Expert 8055 points

Gowda,

This is the link: http://e2e.ti.com/support/omap/f/849/t/214828.aspx

Regards,
Gina

0 Manuel Contreras over 13 years ago in reply to Madhusudhan Gowda

TI__Genius 10545 points

Sorry for the delay, I missed to click "post" last Friday to comment that I fixed the link by removing the incorrect address.

Thanks Gina for submitting the correct link.

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OMAP4430 Panda uart serial wakeup from static suspend retention not working on linux-omap