composite.txt (1702B)
1Binding for TI composite clock. 2 3Binding status: Unstable - ABI compatibility may be broken in the future 4 5This binding uses the common clock binding[1]. It assumes a 6register-mapped composite clock with multiple different sub-types; 7 8a multiplexer clock with multiple input clock signals or parents, one 9of which can be selected as output, this behaves exactly as [2] 10 11an adjustable clock rate divider, this behaves exactly as [3] 12 13a gating function which can be used to enable and disable the output 14clock, this behaves exactly as [4] 15 16The binding must provide a list of the component clocks that shall be 17merged to this clock. The component clocks shall be of one of the 18"ti,*composite*-clock" types. 19 20[1] Documentation/devicetree/bindings/clock/clock-bindings.txt 21[2] Documentation/devicetree/bindings/clock/ti/mux.txt 22[3] Documentation/devicetree/bindings/clock/ti/divider.txt 23[4] Documentation/devicetree/bindings/clock/ti/gate.txt 24 25Required properties: 26- compatible : shall be: "ti,composite-clock" 27- clocks : link phandles of component clocks 28- #clock-cells : from common clock binding; shall be set to 0. 29 30Optional properties: 31- clock-output-names : from common clock binding. 32 33Examples: 34 35usb_l4_gate_ick: usb_l4_gate_ick { 36 #clock-cells = <0>; 37 compatible = "ti,composite-interface-clock"; 38 clocks = <&l4_ick>; 39 ti,bit-shift = <5>; 40 reg = <0x0a10>; 41}; 42 43usb_l4_div_ick: usb_l4_div_ick { 44 #clock-cells = <0>; 45 compatible = "ti,composite-divider-clock"; 46 clocks = <&l4_ick>; 47 ti,bit-shift = <4>; 48 ti,max-div = <1>; 49 reg = <0x0a40>; 50 ti,index-starts-at-one; 51}; 52 53usb_l4_ick: usb_l4_ick { 54 #clock-cells = <0>; 55 compatible = "ti,composite-clock"; 56 clocks = <&usb_l4_gate_ick>, <&usb_l4_div_ick>; 57};