Current command:
smart setclock --help
Set clock speed for smart card interface. usage: smart setclock [-h] [--16mhz] [--8mhz] [--4mhz] options: -h, --help This help --16mhz 16 MHz clock speed --8mhz 8 MHz clock speed --4mhz 4 MHz clock speed examples/notes: smart setclock --4mhz smart setclock --16mhz