configuration of the used clocks.

    "clock": {
        "cpu": {
            "source" : "hse",
            "frequency" : "12 MHz",
        }
    }

defines the source of the clock signal. Supported clock sources are:

• “hse” (High speed external)
• …

type: enum

default: no default possible

defines the frequency that this clock has.

type: string (Hz, kHz, MHz)

default: “1 MHz”