kernel/Documentation/devicetree/bindings/rtc/dw-apb.txt

   1 * Designware APB timer
   2
   3 Required properties:
   4 - compatible: One of:
   5         "snps,dw-apb-timer"
   6         "snps,dw-apb-timer-sp" <DEPRECATED>
   7         "snps,dw-apb-timer-osc" <DEPRECATED>
   8 - reg: physical base address of the controller and length of memory mapped
   9   region.
  10 - interrupts: IRQ line for the timer.
  11 - either clocks+clock-names or clock-frequency properties
  12
  13 Optional properties:
  14 - clocks        : list of clock specifiers, corresponding to entries in
  15                   the clock-names property;
  16 - clock-names   : should contain "timer" and "pclk" entries, matching entries
  17                   in the clocks property.
  18 - clock-frequency: The frequency in HZ of the timer.
  19 - clock-freq: For backwards compatibility with picoxcell
  20
  21 If using the clock specifiers, the pclk clock is optional, as not all
  22 systems may use one.
  23
  24
  25 Example:
  26         timer@ffe00000 {
  27                 compatible = "snps,dw-apb-timer";
  28                 interrupts = <0 170 4>;
  29                 reg = <0xffe00000 0x1000>;
  30                 clocks = <&timer_clk>, <&timer_pclk>;
  31                 clock-names = "timer", "pclk";
  32         };