Semi-related: In my design returning from tapeout I'm passing my power (1.8v) and ground through two of the io_analog pads (in hindsight I should have used the user area power supplies, but I was trying to avoid powering on any of the management SoC - didn't realize these were separate). @User Do the clamps rely on any of the user area power pads (vddxx, vssxx, or vccx) being active? In the user project area I have the clamps connected to my own power rails as would be typical. I'm intending to leave the formal user area power undriven unless they are connected to the clamps behind the scenes (in this case I'll simply tie the user area power to my power rails).

There are clamps under every power and ground pad, so there are independently-connected clamps on every one of the power supplies, both for the user project and management areas, and for both 1.8V and 3.3v domains. The clamps under the analog pads on the Caravan chip are unconnected unless specifically tied between a power input and ground by the user, inside the user project. So it sounds like you connected those clamps to your own power inputs, which is the intended use case. It all sounds correctly done to me.

Thanks for your response. Sounds like I am good to go here.