xref: /freebsd/sys/contrib/device-tree/Bindings/clock/marvell,berlin.txt (revision fe6060f10f634930ff71b7c50291ddc610da2475)
1Device Tree Clock bindings for Marvell Berlin
2
3This binding uses the common clock binding[1].
4
5[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
6
7Clock related registers are spread among the chip control registers. Berlin
8clock node should be a sub-node of the chip controller node. Marvell Berlin2
9(BG2, BG2CD, BG2Q) SoCs share the same IP for PLLs and clocks, with some
10minor differences in features and register layout.
11
12Required properties:
13- compatible: must be "marvell,berlin2-clk" or "marvell,berlin2q-clk"
14- #clock-cells: must be 1
15- clocks: must be the input parent clock phandle
16- clock-names: name of the input parent clock
17	Allowed clock-names for the reference clocks are
18	"refclk" for the SoCs oscillator input on all SoCs,
19	and SoC-specific input clocks for
20	BG2/BG2CD: "video_ext0" for the external video clock input
21
22
23Example:
24
25chip_clk: clock {
26	compatible = "marvell,berlin2q-clk";
27
28	#clock-cells = <1>;
29	clocks = <&refclk>;
30	clock-names = "refclk";
31};
32