pinctrl-single: num_maps in generic pinconf support?

[Drew Fustini <drew@xxxxxxxxxxxxxxx>]

Hello Haojian and Linus,

For pcs_parse_one_pinctrl_entry() in drivers/pinctrl/pinctrl-single.c,
I see that num_maps is set to 2 if PCS_HAS_PINCONF is enabled:

1057         if (PCS_HAS_PINCONF && function) {
1058                 res = pcs_parse_pinconf(pcs, np, function, map);
1059                 if (res)
1060                         goto free_pingroups;
1061                 *num_maps = 2;
1062         } else {
1063                 *num_maps = 1;
1064         }
1065         mutex_unlock(&pcs->mutex);

git blame shows me that came from 9dddb4df90d13:
"pinctrl: single: support generic pinconf"

Would you be able to provide any insight as to num_maps needs to be 2
when pinconf is enabled?

thank you,
drew