how to enable i2c1 for the grove connector on beagleplay

Using latest image on the beagleplay:
beagleplay-debian-12.7-xfce-arm64-2024-09-04-12gb

The i2c1 bus is disabled by default. I have a device on the grove port which uses this bus. I found these overlays:
/boot/firmware/overlays/k3-am625-beagleplay-grove-connector0.dtbo
/boot/firmware/overlays/k3-am625-beagleplay-grove-connector1.dtbo
(not sure why there are 2 overlays when there is only one connector). I tried adding these in /boot/firmware/extlinux/extlinux.conf (separately) but i2c1 isnt being listed by i2cdetect -l. Nothing suspicious in dmesg either.

How can I enable i2c1?

Thanks, Paul