0001 Binding for TI CDCE913/925/937/949 programmable I2C clock synthesizers.
0002
0003 Reference
0004 This binding uses the common clock binding[1].
0005
0006 [1] Documentation/devicetree/bindings/clock/clock-bindings.txt
0007 [2] https://www.ti.com/product/cdce913
0008 [3] https://www.ti.com/product/cdce925
0009 [4] https://www.ti.com/product/cdce937
0010 [5] https://www.ti.com/product/cdce949
0011
0012 The driver provides clock sources for each output Y1 through Y5.
0013
0014 Required properties:
0015 - compatible: Shall be one of the following:
0016 - "ti,cdce913": 1-PLL, 3 Outputs
0017 - "ti,cdce925": 2-PLL, 5 Outputs
0018 - "ti,cdce937": 3-PLL, 7 Outputs
0019 - "ti,cdce949": 4-PLL, 9 Outputs
0020 - reg: I2C device address.
0021 - clocks: Points to a fixed parent clock that provides the input frequency.
0022 - #clock-cells: From common clock bindings: Shall be 1.
0023
0024 Optional properties:
0025 - xtal-load-pf: Crystal load-capacitor value to fine-tune performance on a
0026 board, or to compensate for external influences.
0027 - vdd-supply: A regulator node for Vdd
0028 - vddout-supply: A regulator node for Vddout
0029
0030 For all PLL1, PLL2, ... an optional child node can be used to specify spread
0031 spectrum clocking parameters for a board.
0032 - spread-spectrum: SSC mode as defined in the data sheet.
0033 - spread-spectrum-center: Use "centered" mode instead of "max" mode. When
0034 present, the clock runs at the requested frequency on average. Otherwise
0035 the requested frequency is the maximum value of the SCC range.
0036
0037
0038 Example:
0039
0040 clockgen: cdce925pw@64 {
0041 compatible = "cdce925";
0042 reg = <0x64>;
0043 clocks = <&xtal_27Mhz>;
0044 #clock-cells = <1>;
0045 xtal-load-pf = <5>;
0046 vdd-supply = <&1v8-reg>;
0047 vddout-supply = <&3v3-reg>;
0048 /* PLL options to get SSC 1% centered */
0049 PLL2 {
0050 spread-spectrum = <4>;
0051 spread-spectrum-center;
0052 };
0053 };
