[PATCH V5 3/5] ARM: bcm2835: add system timer
Domenico Andreoli
cavokz at gmail.com
Mon Oct 1 16:30:21 EDT 2012
On Sat, Sep 15, 2012 at 12:21:31AM -0600, Stephen Warren wrote:
>
> diff --git a/Documentation/devicetree/bindings/timer/brcm,bcm2835-system-timer.txt b/Documentation/devicetree/bindings/timer/brcm,bcm2835-system-timer.txt
> new file mode 100644
> index 0000000..a0b727f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/brcm,bcm2835-system-timer.txt
> @@ -0,0 +1,22 @@
> +BCM2835 System Timer
> +
> +The System Timer peripheral provides four 32-bit timer channels and a
> +single 64-bit free running counter. Each channel has an output compare
> +register, which is compared against the 32 least significant bits of the
> +free running counter values, and generates an interrupt.
> +
> +Required properties:
> +
> +- compatible : should be "brcm,bcm2835-system-timer.txt"
^^^^
typo here
> +- reg : Specifies base physical address and size of the registers.
> +- interrupts : A list of 4 interrupt sinks; one per timer channel.
> +- clock-frequency : The frequency of the clock that drives the counter, in Hz.
> +
> +Example:
> +
> +timer {
> + compatible = "brcm,bcm2835-system-timer";
> + reg = <0x20003000 0x1000>;
> + interrupts = <1 0>, <1 1>, <1 2>, <1 3>;
> + clock-frequency = <1000000>;
> +};
cheers,
Domenico
More information about the linux-arm-kernel
mailing list