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[linux/fpc-iii.git] / Documentation / devicetree / bindings / clock / st / st,quadfs.txt
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1 Binding for a type of quad channel digital frequency synthesizer found on
2 certain STMicroelectronics consumer electronics SoC devices.
4 This version contains a programmable PLL which can generate up to 216, 432
5 or 660MHz (from a 30MHz oscillator input) as the input to the digital
6 synthesizers.
8 This binding uses the common clock binding[1].
10 [1] Documentation/devicetree/bindings/clock/clock-bindings.txt
12 Required properties:
13 - compatible : shall be:
14   "st,stih416-quadfs216",       "st,quadfs"
15   "st,stih416-quadfs432",       "st,quadfs"
16   "st,stih416-quadfs660-E",     "st,quadfs"
17   "st,stih416-quadfs660-F",     "st,quadfs"
18   "st,stih407-quadfs660-C",     "st,quadfs"
19   "st,stih407-quadfs660-D",     "st,quadfs"
22 - #clock-cells : from common clock binding; shall be set to 1.
24 - reg : A Base address and length of the register set.
26 - clocks : from common clock binding
28 - clock-output-names : From common clock binding. The block has 4
29                        clock outputs but not all of them in a specific instance
30                        have to be used in the SoC. If a clock name is left as
31                        an empty string then no clock will be created for the
32                        output associated with that string index. If fewer than
33                        4 strings are provided then no clocks will be created
34                        for the remaining outputs.
36 Example:
38         clockgen_e: clockgen-e@fd3208bc {
39                 #clock-cells = <1>;
40                 compatible = "st,stih416-quadfs660-E", "st,quadfs";
41                 reg = <0xfd3208bc 0xB0>;
43                 clocks = <&clk_sysin>;
44                 clock-output-names = "clk-m-pix-mdtp-0",
45                                      "clk-m-pix-mdtp-1",
46                                      "clk-m-pix-mdtp-2",
47                                      "clk-m-mpelpc";
48         };