devtree: add binding documentation for sp804
[deliverable/linux.git] / Documentation / devicetree / bindings / timer / arm,sp804.txt
1 ARM sp804 Dual Timers
2 ---------------------------------------
3
4 Required properties:
5 - compatible: Should be "arm,sp804" & "arm,primecell"
6 - interrupts: Should contain the list of Dual Timer interrupts. This is the
7 interrupt for timer 1 and timer 2. In the case of a single entry, it is
8 the combined interrupt or if "arm,sp804-has-irq" is present that
9 specifies which timer interrupt is connected.
10 - reg: Should contain location and length for dual timer register.
11 - clocks: clocks driving the dual timer hardware. This list should be 1 or 3
12 clocks. With 3 clocks, the order is timer0 clock, timer1 clock,
13 apb_pclk. A single clock can also be specified if the same clock is
14 used for all clock inputs.
15
16 Optional properties:
17 - arm,sp804-has-irq = <#>: In the case of only 1 timer irq line connected, this
18 specifies if the irq connection is for timer 1 or timer 2. A value of 1
19 or 2 should be used.
20
21 Example:
22
23 timer0: timer@fc800000 {
24 compatible = "arm,sp804", "arm,primecell";
25 reg = <0xfc800000 0x1000>;
26 interrupts = <0 0 4>, <0 1 4>;
27 clocks = <&timclk1 &timclk2 &pclk>;
28 clock-names = "timer1", "timer2", "apb_pclk";
29 };
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