Reserved GPIO DWM1001

Hi,

Does any know what are the reserved PINs of the DWM1001 module please?

On shell

dwm> gg 30
reserved pin (should be 0-31, no LED pin, no LP pin)
dwm> gg 31
reserved pin (should be 0-31, no LED pin, no LP pin)
dwm> gg 22
reserved pin (should be 0-31, no LED pin, no LP pin)

In DWM1001 Firmware API Guide.pdf

When LED function is enabled, GPIO 22, 30 and 31 are occupied.

What are they used for? I tried to look for all the documents but unable to find out what are they used for.

Hope someone can help.

Thanks

Found after digging further, should have included in the datasheet of DWM1001.