[deliverable/linux.git] / Documentation / devicetree / bindings / rtc / dw-apb.txt

* Designware APB timer

Required properties:
- compatible: One of:
 	"snps,dw-apb-timer"
	"snps,dw-apb-timer-sp" <DEPRECATED>
	"snps,dw-apb-timer-osc" <DEPRECATED>
- reg: physical base address of the controller and length of memory mapped
  region.
- interrupts: IRQ line for the timer.
- either clocks+clock-names or clock-frequency properties

Optional properties:
- clocks	: list of clock specifiers, corresponding to entries in
		  the clock-names property;
- clock-names	: should contain "timer" and "pclk" entries, matching entries
		  in the clocks property.
- clock-frequency: The frequency in HZ of the timer.
- clock-freq: For backwards compatibility with picoxcell

If using the clock specifiers, the pclk clock is optional, as not all
systems may use one.


Example:
	timer@ffe00000 {
		compatible = "snps,dw-apb-timer";
		interrupts = <0 170 4>;
		reg = <0xffe00000 0x1000>;
		clocks = <&timer_clk>, <&timer_pclk>;
		clock-names = "timer", "pclk";
	};
Commit	Line	Data
cfda5901 DN	1	* Designware APB timer
	2
	3	Required properties:
620f5e1c DN	4	- compatible: One of:
	5	"snps,dw-apb-timer"
	6	"snps,dw-apb-timer-sp" <DEPRECATED>
	7	"snps,dw-apb-timer-osc" <DEPRECATED>
cfda5901 DN	8	- reg: physical base address of the controller and length of memory mapped
	9	region.
	10	- interrupts: IRQ line for the timer.
a8b447f2 HS	11	- either clocks+clock-names or clock-frequency properties
	12
	13	Optional properties:
	14	- clocks : list of clock specifiers, corresponding to entries in
	15	the clock-names property;
	16	- clock-names : should contain "timer" and "pclk" entries, matching entries
	17	in the clocks property.
cfda5901 DN	18	- clock-frequency: The frequency in HZ of the timer.
	19	- clock-freq: For backwards compatibility with picoxcell
	20
a8b447f2 HS	21	If using the clock specifiers, the pclk clock is optional, as not all
	22	systems may use one.
	23
	24
cfda5901	25	Example:
620f5e1c DN	26	timer@ffe00000 {
	27	compatible = "snps,dw-apb-timer";
	28	interrupts = <0 170 4>;
	29	reg = <0xffe00000 0x1000>;
	30	clocks = <&timer_clk>, <&timer_pclk>;
	31	clock-names = "timer", "pclk";
	32	};