1* Clock bindings for Axis ARTPEC-6 chip
2
3The bindings are based on the clock provider binding in
4Documentation/devicetree/bindings/clock/clock-bindings.txt
5
6External clocks:
7----------------
8
9There are two external inputs to the main clock controller which should be
10provided using the common clock bindings.
11- "sys_refclk": External 50 Mhz oscillator (required)
12- "i2s_refclk": Alternate audio reference clock (optional).
13
14Main clock controller
15---------------------
16
17Required properties:
18- #clock-cells: Should be <1>
19  See dt-bindings/clock/axis,artpec6-clkctrl.h for the list of valid identifiers.
20- compatible: Should be "axis,artpec6-clkctrl"
21- reg: Must contain the base address and length of the system controller
22- clocks:  Must contain a phandle entry for each clock in clock-names
23- clock-names: Must include the external oscillator ("sys_refclk"). Optional
24  ones are the audio reference clock ("i2s_refclk") and the audio fractional
25  dividers ("frac_clk0" and "frac_clk1").
26
27Examples:
28
29ext_clk: ext_clk {
30	#clock-cells = <0>;
31	compatible = "fixed-clock";
32	clock-frequency = <50000000>;
33};
34
35clkctrl: clkctrl@f8000000 {
36	#clock-cells = <1>;
37	compatible = "axis,artpec6-clkctrl";
38	reg = <0xf8000000 0x48>;
39	clocks = <&ext_clk>;
40	clock-names = "sys_refclk";
41};
42