RTS/CTS handshake lines on UARTs

[HiassofT]

I recently needed the RTS/CTS handshake lines of the (mini)uarts in one of my projects so I wrote a bunch of device tree overlays to enable these lines.

Nothing special, but might be helpful to others. You can get the dts and dtbo files from here: https://github.com/HiassofT/AtariSIO/tr ... ontrib/rpi

The filenames should be rather self-explanatory, some more info is in the comments in the dts files.

so long,

Hias

[danjperron]

thank you!