Hi Niall, thanks for your patch! On Thu, Jan 26, 2023 at 11:18 AM Niall Leonard via B4 Submission Endpoint <devnull+nl250060.ncr.com@xxxxxxxxxx> wrote: > Optional properties: > - no-output: GPIOs are read-only. > + - no-input: GPIOs are write-only. Read is via a shadow register. "Shadow register" is unclear technical lingo. Just write "GPIO output registers are write-only" DT bindings are OS neutral, the fact that Linux and other OS:es need to cache ("shadow") this value is an implementation detail. Yours, Linus Walleij