Pad configuration lost during suspend

Gao Gavin

Hi,

I am working on a product using OMAP3630+TPS65920 with Gingerbread rowboat 2.3.4. I want gpio86 to output high during suspend. So I config it as "OMAP3_MUX(DSS_DATA16, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT | OMAP_OFF_EN | OMAP_OFFOUT_VAL)" in omap3_mux_init(). And I do find the register CONTROL_PADCONF_DSS_DATA16 is set to 0x0a04. But during suspend, just before the system would really enter suspend, the value in CONTROL_PADCONF_DSS_DATA16 is changed to 0x010f. After resume, the value in CONTROL_PADCONF_DSS_DATA16 would changed back to 0x0a04 again. Does anyone know why the pad configuration is lost during suspend? How could I make the gpio to output high during suspend? Thanks a lot.

over 12 years ago

0 Manuel Contreras over 12 years ago

TI__Genius 10545 points

I am not sure but Rowboat doesn't support OMAP3630, it must not, you can try to use one of GB releases from next page, there are 2 different instructions set made at different times, I normally used last link, you can use git tag as instructed in the links.

http://omapedia.org/wiki/OMAP_Android_Main

http://omapedia.org/wiki/Building_Android

and

http://omapedia.org/wiki/Android_Getting_Started

I must say, It is an old release and there should not be support for it in the forum, try to post in OMAP forum for general questions about OMAP.

0 Manuel Contreras over 12 years ago in reply to Manuel Contreras

TI__Genius 10545 points

Correcting last link I missed one "D", I corrected the original post as well.

http://omapedia.org/wiki/Android_Getting_Started

0 Manuel Contreras over 12 years ago in reply to Manuel Contreras

TI__Genius 10545 points

A parallel link for first link is:

http://omapedia.org/wiki/Android_Getting_Started_Overview

0 Gao Gavin over 12 years ago in reply to Manuel Contreras

Prodigy 150 points

Thanks for response.

There is a typo. We use OMAP3715. The off mode do take effect on other gpio. I think maybe some where in our code reset the pad configuration of gpio86 before sleep.

Processors

Processors forum

Pad configuration lost during suspend