Documentation/devicetree/bindings/interrupt-controller/st,sti-irq-syscfg.txt

   1 STMicroelectronics STi System Configuration Controlled IRQs
   2 -----------------------------------------------------------
   3
   4 On STi based systems; External, CTI (Core Sight), PMU (Performance Management),
   5 and PL310 L2 Cache IRQs are controlled using System Configuration registers.
   6 This driver is used to unmask them prior to use.
   7
   8 Required properties:
   9 - compatible    : Should be set to one of:
  10                         "st,stih415-irq-syscfg"
  11                         "st,stih416-irq-syscfg"
  12                         "st,stih407-irq-syscfg"
  13                         "st,stid127-irq-syscfg"
  14 - st,syscfg     : Phandle to Cortex-A9 IRQ system config registers
  15 - st,irq-device : Array of IRQs to enable - should be 2 in length
  16 - st,fiq-device : Array of FIQs to enable - should be 2 in length
  17
  18 Optional properties:
  19 - st,invert-ext : External IRQs can be inverted at will.  This property inverts
  20                   these IRQs using bitwise logic.  A number of defines have been
  21                   provided for convenience:
  22                         ST_IRQ_SYSCFG_EXT_1_INV
  23                         ST_IRQ_SYSCFG_EXT_2_INV
  24                         ST_IRQ_SYSCFG_EXT_3_INV
  25 Example:
  26
  27 irq-syscfg {
  28         compatible    = "st,stih416-irq-syscfg";
  29         st,syscfg     = <&syscfg_cpu>;
  30         st,irq-device = <ST_IRQ_SYSCFG_PMU_0>,
  31                         <ST_IRQ_SYSCFG_PMU_1>;
  32         st,fiq-device = <ST_IRQ_SYSCFG_DISABLED>,
  33                         <ST_IRQ_SYSCFG_DISABLED>;
  34         st,invert-ext = <(ST_IRQ_SYSCFG_EXT_1_INV | ST_IRQ_SYSCFG_EXT_3_INV)>;
  35 };