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12ece40d91
adds file for description on device node bindings for RTC found on Xilinx Zynq Ultrascale+ MPSoC. Signed-off-by: Suneel Garapati <suneel.garapati@xilinx.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
26 lines
738 B
Plaintext
26 lines
738 B
Plaintext
* Xilinx Zynq Ultrascale+ MPSoC Real Time Clock
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RTC controller for the Xilinx Zynq MPSoC Real Time Clock
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Separate IRQ lines for seconds and alarm
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Required properties:
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- compatible: Should be "xlnx,zynqmp-rtc"
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- reg: Physical base address of the controller and length
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of memory mapped region.
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- interrupts: IRQ lines for the RTC.
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- interrupt-names: interrupt line names eg. "sec" "alarm"
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Optional:
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- calibration: calibration value for 1 sec period which will
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be programmed directly to calibration register
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Example:
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rtc: rtc@ffa60000 {
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compatible = "xlnx,zynqmp-rtc";
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reg = <0x0 0xffa60000 0x100>;
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interrupt-parent = <&gic>;
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interrupts = <0 26 4>, <0 27 4>;
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interrupt-names = "alarm", "sec";
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calibration = <0x198233>;
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};
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