Pinmux BBG issue

General Discussion
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1

Hi,
I am working with BBG and I have an issue with using of P8.21 pin:

image

I am not able to set that pin as GPIO or an another configuration.
How can I solve it?

This is uEnv file
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This is the result of tool version.sh
image

2

Hi @GiovanniMo P8_21 is used by the eMMC…

Regards,

3

Hi Robert,
How can I know it?

Can I disable the eMMC and start the BBG from a flashed SD?

4

Hello @GiovanniMo ,

Yes. If you are booting from SD Card, just disable the eMMC in the /boot/uEnv.txt file on the images supported by beagleboard.org.

Seth

P.S. Scroll down on that file where there is a # (comment) before the disabling of the eMMC and erase the # comment mark.

5

Hi @silver2row ,
Thank you for your help.

Regards,