On Wed, Aug 18, 2021 at 5:28 PM Tobias Junghans <tobias.junghans@xxxxxxxx> wrote: > Per default the GP pins of an MCP2221 are designated to a certain > dedicated or alternate function. While it's possible to change these > defaults by manually updating the internal flash, it's much more > convenient and safe to configure the GP pins as GPIOs automatically > at runtime whenever the corresponding GPIO line is requested. The > previous setting is restored as soon as the GPIO line is freed again. > > Signed-off-by: Tobias Junghans <tobias.junghans@xxxxxxxx> My sympathies are usually on the side of users trying to make use of their hardware and they should be able to. For other wrong configured GPIO expanders such as FTDI a publicly available firmware reflash tool exists, and if that does not exist for this hardware, I think this approach is legitimate. Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Yours, Linus Walleij
