Using an unbonded pin in the device tree

RE: Using an unbonded pin in the device tree

pixelstand — Tue, 06 Jan 2026 01:19:55 GMT

Thank you, Kenneth-

I will assume that the pins are not used for any internal purpose. As long as i can select P1.15 and P1.16 in the device tree, i will use these as dummy connections in the above specified manner.

I did manage to free up 2 other pins in my solution as a backup plan. I will start out using P1.15 and P1.16 as described above for our EVT run and switch to the freed pins if needed.

-Peter

RE: Using an unbonded pin in the device tree

Kenneth — Mon, 29 Dec 2025 11:01:13 GMT

Hello,

If you configure a pin out of physical range, PSEL points to a non‑existing pad. It’s treated as a legal configuration that map to “no effective pin”. There’s no hardware check on this violation. Validation is only done on the SW side such as SDK pinmaps, devicetre.. Basically, no direct risk of damaging the chip just from selecting a non‑existing pad via PSEL.

Kenneth

RE: Using an unbonded pin in the device tree

Kenneth — Mon, 22 Dec 2025 08:33:42 GMT

Hello,

A very interesting observation, I will need to ask internally, due to many key personnel are on holiday next two week, we may need to wait until the start of January before we will get a reply back.

Kenneth