Hi all,
I'm copying some parts of the iMX28evk into my custom design based on a iMX283 and have some doubts about these 2 signals:
- GPIO2_14: is the HEADPHONE_DETECT signal
- GPIO2_24: is the WALL_5V_IN detection signal
After greping the source code (PINID_SSP1_DATA0 & PINID_SSP3_SCK) I haven't been able to find any palce where they are used.
I'm specially concerned with the use of GPIO2_24, since it could be involved in the reliable operation on a 5V source only. I've also tried to find this signal in imx-bootlets but upto now, with no success.
Does anyboby know where are these signals used?
Thanks,
Gonzalo.
Solved! Go to Solution.
Hi Gonzalo,
If you don't want the HEADPHONE functionality, you don't need to use GPIO2_14. Probably is not used in the Linux BSP. And regarding GPIO2_24, that GPIO is not needed for 5V operation. Check AN4199 for PMIC 5V operation and the i.MX28 reference schematics, where GPIO2_24 is not used.
Regards,
Luis
Ganzalo, if your question had been answered, please click Correct Answer/Helpful Answer.
Thanks,
Yixing
Hi Gonzalo,
If you don't want the HEADPHONE functionality, you don't need to use GPIO2_14. Probably is not used in the Linux BSP. And regarding GPIO2_24, that GPIO is not needed for 5V operation. Check AN4199 for PMIC 5V operation and the i.MX28 reference schematics, where GPIO2_24 is not used.
Regards,
Luis
Luis, thanks !!!
Gonzalo.