23 lines
751 B
Plaintext
23 lines
751 B
Plaintext
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BCM2835 System Timer
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The System Timer peripheral provides four 32-bit timer channels and a
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single 64-bit free running counter. Each channel has an output compare
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register, which is compared against the 32 least significant bits of the
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free running counter values, and generates an interrupt.
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Required properties:
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- compatible : should be "brcm,bcm2835-system-timer.txt"
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- reg : Specifies base physical address and size of the registers.
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- interrupts : A list of 4 interrupt sinks; one per timer channel.
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- clock-frequency : The frequency of the clock that drives the counter, in Hz.
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Example:
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timer {
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compatible = "brcm,bcm2835-system-timer";
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reg = <0x7e003000 0x1000>;
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interrupts = <1 0>, <1 1>, <1 2>, <1 3>;
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clock-frequency = <1000000>;
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};
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