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

   1 * Designware APB timer
   2
   3 Required properties:
   4 - compatible: "snps,dw-apb-timer-sp" or "snps,dw-apb-timer-osc"
   5 - reg: physical base address of the controller and length of memory mapped
   6   region.
   7 - interrupts: IRQ line for the timer.
   8 - either clocks+clock-names or clock-frequency properties
   9
  10 Optional properties:
  11 - clocks        : list of clock specifiers, corresponding to entries in
  12                   the clock-names property;
  13 - clock-names   : should contain "timer" and "pclk" entries, matching entries
  14                   in the clocks property.
  15 - clock-frequency: The frequency in HZ of the timer.
  16 - clock-freq: For backwards compatibility with picoxcell
  17
  18 If using the clock specifiers, the pclk clock is optional, as not all
  19 systems may use one.
  20
  21
  22 Example:
  23
  24                 timer1: timer@ffc09000 {
  25                                 compatible = "snps,dw-apb-timer-sp";
  26                                 interrupts = <0 168 4>;
  27                                 clock-frequency = <200000000>;
  28                                 reg = <0xffc09000 0x1000>;
  29                         };
  30
  31                 timer2: timer@ffd00000 {
  32                                 compatible = "snps,dw-apb-timer-osc";
  33                                 interrupts = <0 169 4>;
  34                                 clock-frequency = <200000000>;
  35                                 reg = <0xffd00000 0x1000>;
  36                         };
  37
  38                 timer3: timer@ffe00000 {
  39                                 compatible = "snps,dw-apb-timer-osc";
  40                                 interrupts = <0 170 4>;
  41                                 reg = <0xffe00000 0x1000>;
  42                                 clocks = <&timer_clk>, <&timer_pclk>;
  43                                 clock-names = "timer", "pclk";
  44                         };