1* Amlogic Meson8b Clock and Reset Unit 2 3The Amlogic Meson8b clock controller generates and supplies clock to various 4controllers within the SoC. 5 6Required Properties: 7 8- compatible: should be "amlogic,meson8b-clkc" 9- reg: it must be composed by two tuples: 10 0) physical base address of the xtal register and length of memory 11 mapped region. 12 1) physical base address of the clock controller and length of memory 13 mapped region. 14 15- #clock-cells: should be 1. 16 17Each clock is assigned an identifier and client nodes can use this identifier 18to specify the clock which they consume. All available clocks are defined as 19preprocessor macros in the dt-bindings/clock/meson8b-clkc.h header and can be 20used in device tree sources. 21 22Example: Clock controller node: 23 24 clkc: clock-controller@c1104000 { 25 #clock-cells = <1>; 26 compatible = "amlogic,meson8b-clkc"; 27 reg = <0xc1108000 0x4>, <0xc1104000 0x460>; 28 }; 29 30 31Example: UART controller node that consumes the clock generated by the clock 32 controller: 33 34 uart_AO: serial@c81004c0 { 35 compatible = "amlogic,meson-uart"; 36 reg = <0xc81004c0 0x14>; 37 interrupts = <0 90 1>; 38 clocks = <&clkc CLKID_CLK81>; 39 status = "disabled"; 40 }; 41