UART Flow Control


Does Turris Omnia support hardware UART flow control? I use UART1 (/dev/ttyS1) to connect an XBee device and would like to use flow control to allow more stable communication on higher baud rates.
I’ve checked the schematics and found no CTS/RTS, but I’m asking here as a last resort in case some pins have several functions, for example, SPIO_SCK could in theory also be UATR1_RTS but just not labeled this way.