AM3517 Failed to request pm_wkup irq

AM3517 Failed to request pm_wkup irq

[Adam Ford]

When booting the AM3517-EVM, I get a few errors related to the pm.

[    2.038452] pm: Failed to request pm_wkup irq
[    2.042846] omap2_common_pm_late_init: pm soc init failed: -22

omap3_pm_init inside pm34xx.c calls omap_prcm_event_to_irq looking for
"wkup" which returns EINVAL .

Inside omap_prm.c, there are a bunch of data structures for
omap_prm_data which contain for various boards for AM3, AM4, omap4,
omap5 and dra7, but a reference to ti,omap3-prm-inst appears to be
missing.  I looked at the TRM for the AM335X, and i can clearly see a
nice table with addresses that correspond to the tables found in
omap_prm.c, but after looking at both a DM3730 and AM3517 TRM, I am
not seeing a corresponding L4_WKUP Peripheral Memory map.

If someone can point me in the right direction, I can try to setup the
OMAP3 tables accordingly.

thanks

adam

Re: AM3517 Failed to request pm_wkup irq

[Tony Lindgren]

Hi,

* Adam Ford <aford173@gmail.com> [230105 18:32]:
> When booting the AM3517-EVM, I get a few errors related to the pm.
> 
> [    2.038452] pm: Failed to request pm_wkup irq
> [    2.042846] omap2_common_pm_late_init: pm soc init failed: -22
> 
> omap3_pm_init inside pm34xx.c calls omap_prcm_event_to_irq looking for
> "wkup" which returns EINVAL .
> 
> Inside omap_prm.c, there are a bunch of data structures for
> omap_prm_data which contain for various boards for AM3, AM4, omap4,
> omap5 and dra7, but a reference to ti,omap3-prm-inst appears to be
> missing.  I looked at the TRM for the AM335X, and i can clearly see a
> nice table with addresses that correspond to the tables found in
> omap_prm.c, but after looking at both a DM3730 and AM3517 TRM, I am
> not seeing a corresponding L4_WKUP Peripheral Memory map.
> 
> If someone can point me in the right direction, I can try to setup the
> OMAP3 tables accordingly.

The older SoCs set up the prm wakeup via omap3_prcm_irq_setup. Ideally
this would be nowadays done using dts and driver/irqchip though.

Maybe see omap3xxx_check_features() and try adding flags for
OMAP3_HAS_IO_WAKEUP for am3517? Likely this is the same as for 34xx.
It may also have OMAP3_HAS_IO_CHAIN_CTRL like 36xx, but likely not.

Regards,

Tony