xref: /freebsd/sys/contrib/device-tree/Bindings/arm/marvell/kirkwood.txt (revision a90b9d0159070121c221b966469c3e36d912bf82)
1Marvell Kirkwood Platforms Device Tree Bindings
2-----------------------------------------------
3
4Boards with a SoC of the Marvell Kirkwood
5shall have the following property:
6
7Required root node property:
8
9compatible: must contain "marvell,kirkwood";
10
11In order to support the kirkwood cpufreq driver, there must be a node
12cpus/cpu@0 with three clocks, "cpu_clk", "ddrclk" and "powersave",
13where the "powersave" clock is a gating clock used to switch the CPU
14between the "cpu_clk" and the "ddrclk".
15
16Example:
17
18	cpus {
19		#address-cells = <1>;
20		#size-cells = <0>;
21
22		cpu@0 {
23		      device_type = "cpu";
24		      compatible = "marvell,sheeva-88SV131";
25		      clocks = <&core_clk 1>, <&core_clk 3>, <&gate_clk 11>;
26		      clock-names = "cpu_clk", "ddrclk", "powersave";
27		};
28