From 92e16f0fb2df652945ead20dd669fc5cf8fd1cff Mon Sep 17 00:00:00 2001 From: Vladimir Zapolskiy Date: Sun, 6 Dec 2015 12:45:53 +0200 Subject: [PATCH] dt-bindings: clock: add description of LPC32xx clock controller NXP LPC32xx SoC has a clocking and power control unit (CPC) as a part of system control block (SCB). CPC is supplied by two external oscillators and it manages core and most of peripheral clocks, the change adds description of DT bindings for clock controller found on LPC32xx SoC series. Signed-off-by: Vladimir Zapolskiy Acked-by: Rob Herring Signed-off-by: Michael Turquette --- .../bindings/clock/nxp,lpc3220-clk.txt | 30 +++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/nxp,lpc3220-clk.txt diff --git a/Documentation/devicetree/bindings/clock/nxp,lpc3220-clk.txt b/Documentation/devicetree/bindings/clock/nxp,lpc3220-clk.txt new file mode 100644 index 000000000000..20cbca3f41d8 --- /dev/null +++ b/Documentation/devicetree/bindings/clock/nxp,lpc3220-clk.txt @@ -0,0 +1,30 @@ +NXP LPC32xx Clock Controller + +Required properties: +- compatible: should be "nxp,lpc3220-clk" +- reg: should contain clock controller registers location and length +- #clock-cells: must be 1, the cell holds id of a clock provided by the + clock controller +- clocks: phandles of external oscillators, the list must contain one + 32768 Hz oscillator and may have one optional high frequency oscillator +- clock-names: list of external oscillator clock names, must contain + "xtal_32k" and may have optional "xtal" + +Examples: + + /* System Control Block */ + scb { + compatible = "simple-bus"; + ranges = <0x0 0x040004000 0x00001000>; + #address-cells = <1>; + #size-cells = <1>; + + clk: clock-controller@0 { + compatible = "nxp,lpc3220-clk"; + reg = <0x00 0x114>; + #clock-cells = <1>; + + clocks = <&xtal_32k>, <&xtal>; + clock-names = "xtal_32k", "xtal"; + }; + }; -- 2.20.1