Kernel-4.18.0-80.el8_gpio-mpc8xxx

• Freescale MPC512x/MPC8xxx/QorIQ/Layerscape GPIO controller

Required properties:

• compatible : Should be “fsl,-gpio”
  The following s are known to be supported:
  mpc5121, mpc5125, mpc8349, mpc8572, mpc8610, pq3, qoriq,
  ls1021a, ls1043a, ls2080a.
• reg : Address and length of the register set for the device
• interrupts : Should be the port interrupt shared by all 32 pins.
• #gpio-cells : Should be two. The first cell is the pin number and
  the second cell is used to specify the gpio polarity:

  0 = active high
  1 = active low
  

Optional properties:

• little-endian : GPIO registers are used as little endian. If not

              present registers are used as big endian by default.
  

Example of gpio-controller node for a mpc5125 SoC:

gpio0: gpio@1100 {
compatible = “fsl,mpc5125-gpio”;
#gpio-cells = <2>;
reg = <0x1100 0x080>;
interrupts = <78 0x8>;
};

Example of gpio-controller node for a ls2080a SoC:

gpio0: gpio@2300000 {
compatible = “fsl,ls2080a-gpio”, “fsl,qoriq-gpio”;
reg = <0x0 0x2300000 0x0 0x10000>;
interrupts = <0 36 0x4>; /* Level high type */
gpio-controller;
little-endian;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
};