Kernel-4.18.0-80.el8_xlnx-rtc

• Xilinx Zynq Ultrascale+ MPSoC Real Time Clock

RTC controller for the Xilinx Zynq MPSoC Real Time Clock
Separate IRQ lines for seconds and alarm

Required properties:

• compatible: Should be “xlnx,zynqmp-rtc”
• reg: Physical base address of the controller and length

   of memory mapped region.
  

• interrupts: IRQ lines for the RTC.
• interrupt-names: interrupt line names eg. “sec” “alarm”

Optional:

• calibration: calibration value for 1 sec period which will

    be programmed directly to calibration register
  

Example:
rtc: rtc@ffa60000 {
compatible = “xlnx,zynqmp-rtc”;
reg = <0x0 0xffa60000 0x100>;
interrupt-parent = <&gic>;
interrupts = <0 26 4>, <0 27 4>;
interrupt-names = “alarm”, “sec”;
calibration = <0x198233>;
};