On Tue, Jan 12, 2021 at 10:18:33AM +0000, Jozsef Horvath wrote: > --- a/include/uapi/linux/serial_core.h > +++ b/include/uapi/linux/serial_core.h > @@ -279,4 +279,7 @@ > /* Freescale LINFlexD UART */ > #define PORT_LINFLEXUART 122 > > +/* Silicon Labs SI4455 */ > +#define PORT_SI4455 123 What userspace tool is going to need this value? thanks, greg k-h