Binding for a type of quad channel digital frequency synthesizer found on
certain STMicroelectronics consumer electronics SoC devices.

This version contains a programmable PLL which can generate up to 216, 432
or 660MHz (from a 30MHz oscillator input) as the input to the digital
synthesizers.

This binding uses the common clock binding[1].

[1] Documentation/devicetree/bindings/clock/clock-bindings.txt

Required properties:
- compatible : shall be:
  "st,stih416-quadfs216",	"st,quadfs"
  "st,stih416-quadfs432",	"st,quadfs"
  "st,stih416-quadfs660-E",	"st,quadfs"
  "st,stih416-quadfs660-F",	"st,quadfs"

- #clock-cells : from common clock binding; shall be set to 1.

- reg : A Base address and length of the register set.

- clocks : from common clock binding

- clock-output-names : From common clock binding. The block has 4
                       clock outputs but not all of them in a specific instance
                       have to be used in the SoC. If a clock name is left as
                       an empty string then no clock will be created for the
                       output associated with that string index. If fewer than
                       4 strings are provided then no clocks will be created
                       for the remaining outputs.

Example:

	CLOCKGEN_E: CLOCKGEN_E {
                #clock-cells = <1>;
                compatible = "st,stih416-quadfs660-E", "st,quadfs";
                reg = <0xfd3208bc 0xB0>;

                clocks = <&CLK_SYSIN>;
                clock-output-names = "CLK_M_PIX_MDTP_0",
                                        "CLK_M_PIX_MDTP_1",
                                        "CLK_M_PIX_MDTP_2",
                                        "CLK_M_MPELPC";
        };