* Marvell PXA168 Clock ControllerThe PXA168 clock subsystem generates and supplies clock to variouscontrollers within the PXA168 SoC.Required Properties:- compatible: should be one of the following. - "marvell,pxa168-clock" - controller compatible with PXA168 SoC.- reg: physical base address of the clock subsystem and length of memory mapped region. There are 3 places in SOC has clock control logic: "mpmu", "apmu", "apbc". So three reg spaces need to be defined.- #clock-cells: should be 1.- #reset-cells: should be 1.Each clock is assigned an identifier and client nodes use this identifierto specify the clock which they consume.All these identifier could be found in <dt-bindings/clock/marvell,pxa168.h>.