Ingenic SoC CGU binding The CGU in an Ingenic SoC provides all the clocks generated on-chip. It typically includes a variety of PLLs, multiplexers, dividers & gates in order to provide many different clock signals derived from only 2 external source clocks. Required properties: - compatible : Should be "ingenic,-cgu". For example "ingenic,jz4740-cgu" or "ingenic,jz4780-cgu". - reg : The address & length of the CGU registers. - clocks : List of phandle & clock specifiers for clocks external to the CGU. Two such external clocks should be specified - first the external crystal "ext" and second the RTC clock source "rtc". - clock-names : List of name strings for the external clocks. - #clock-cells: Should be 1. Clock consumers specify this argument to identify a clock. The valid values may be found in -cgu.h>. Example SoC include file: / { cgu: jz4740-cgu { compatible = "ingenic,jz4740-cgu"; reg = <0x10000000 0x100>; #clock-cells = <1>; }; uart0: serial@10030000 { clocks = <&cgu JZ4740_CLK_UART0>; }; }; Example board file: / { ext: clock@0 { compatible = "fixed-clock"; #clock-cells = <0>; clock-frequency = <12000000>; }; rtc: clock@1 { compatible = "fixed-clock"; #clock-cells = <0>; clock-frequency = <32768>; }; &cgu { clocks = <&ext> <&rtc>; clock-names: "ext", "rtc"; }; };