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- Motorola mc146818 compatible RTC
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- Required properties:
- - compatible : "motorola,mc146818"
- - reg : should contain registers location and length.
- Optional properties:
- - interrupts : should contain interrupt.
- - interrupt-parent : interrupt source phandle.
- - ctrl-reg : Contains the initial value of the control register also
- called "Register B".
- - freq-reg : Contains the initial value of the frequency register also
- called "Regsiter A".
- "Register A" and "B" are usually initialized by the firmware (BIOS for
- instance). If this is not done, it can be performed by the driver.
- ISA Example:
- rtc@70 {
- compatible = "motorola,mc146818";
- interrupts = <8 3>;
- interrupt-parent = <&ioapic1>;
- ctrl-reg = <2>;
- freq-reg = <0x26>;
- reg = <1 0x70 2>;
- };
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