[PATCH 2/2] dt-bindings: clock: Add bindings for the Clocking Wizard IP
From: Boris Brezillon <hidden>
Date: 2018-08-01 08:19:50
Also in:
linux-arm-kernel, linux-clk
Subsystem:
common clk framework, open firmware and flattened device tree bindings, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Document Xilinx Clocking Wizard bindings. Signed-off-by: Boris Brezillon <redacted> --- .../devicetree/bindings/clock/xlnx,clk-wizard.txt | 28 ++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/xlnx,clk-wizard.txt
diff --git a/Documentation/devicetree/bindings/clock/xlnx,clk-wizard.txt b/Documentation/devicetree/bindings/clock/xlnx,clk-wizard.txt
new file mode 100644
index 000000000000..1bf7a764f4a9
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/xlnx,clk-wizard.txt@@ -0,0 +1,28 @@ +Device Tree Clock bindings for the "Clocking Wizard" IP provided by Xilinx + +This block can be used to generate up to 4 clock signals out of a single input +clock. It embeds a PLL to generate an intermediate clock which then feeds 4 +clock dividers whose divider value can be adjusted based on the user needs. + +Required properties: + - #clock-cells: must be 1. The cell is encoding the id of the output clk + (from 0 to xlnx,clk-wizard-num-outputs - 1) + - compatible: must be "xlnx,clk-wizard-5.1" + - clocks: 2 clocks are required + - clock-names: should contain 2 clock names: "aclk" and "clkin". + "aclk" is driving the register interface and "clk_in" is the + input clock signal that is used by the PLL block + - xlnx,clk-wizard-num-outputs: this describe the number of output clocks + (chosen at synthesization time) + - reg: registers used to configure the Clocking wizard block + +Example: + + clkwizard: clkwizard@43c20000 { + compatible = "xlnx,clk-wizard-5.1"; + reg = <0x43c20000 0x10000>; + clocks = <&clkc 18>, <&clkc 18>; + clock-names = "aclk", "clk_in1"; + #clock-cells = <1>; + xlnx,clk-wizard-num-outputs = <2>; + };
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2.14.1