Kernel-4.18.0-80.el8_st,sti-irq-syscfg

STMicroelectronics STi System Configuration Controlled IRQs

On STi based systems; External, CTI (Core Sight), PMU (Performance Management),
and PL310 L2 Cache IRQs are controlled using System Configuration registers.
This driver is used to unmask them prior to use.

Required properties:

• compatible : Should be set to one of:

        "st,stih415-irq-syscfg"
        "st,stih416-irq-syscfg"
        "st,stih407-irq-syscfg"
        "st,stid127-irq-syscfg"
  

• st,syscfg : Phandle to Cortex-A9 IRQ system config registers
• st,irq-device : Array of IRQs to enable - should be 2 in length
• st,fiq-device : Array of FIQs to enable - should be 2 in length

Optional properties:

• st,invert-ext : External IRQs can be inverted at will. This property inverts

      these IRQs using bitwise logic.  A number of defines have been
      provided for convenience:
        ST_IRQ_SYSCFG_EXT_1_INV
        ST_IRQ_SYSCFG_EXT_2_INV
        ST_IRQ_SYSCFG_EXT_3_INV
  

  Example:

irq-syscfg {
compatible = “st,stih416-irq-syscfg”;
st,syscfg = <&syscfg_cpu>;
st,irq-device = ,
;
st,fiq-device = ,
;
st,invert-ext = <(ST_IRQ_SYSCFG_EXT_1_INV | ST_IRQ_SYSCFG_EXT_3_INV)>;
};