Pinebook Pro USB-C port not working after kernel upgrade

After the recent update to Linux 6.6 (thanks drmozes!), the USB-C port on my Pinebook Pro does not seem to work at all. I have a USB-C dock, and when I plug it in, nothing appears in dmesg - even at debug level - and lsusb is unchanged. I noticed this problem when I tried out megi's 6.7 kernel, and when switching back to 6.1, things worked just fine so I chalked it up to a kernel config problem. Plugging the dock in to the USB-A port with an adapter also works (but not the DP alt mode which is the main reason I want to use this dock.)

Has anyone else seen this problem since the upgrade? Any suggestions for further debugging?

Thanks!