Kernel-4.18.0-80.el8_gpio-pca953x

• NXP PCA953x I2C GPIO multiplexer

Required properties:

• compatible: Has to contain one of the following:
  nxp,pca9505
  nxp,pca9534
  nxp,pca9535
  nxp,pca9536
  nxp,pca9537
  nxp,pca9538
  nxp,pca9539
  nxp,pca9554
  nxp,pca9555
  nxp,pca9556
  nxp,pca9557
  nxp,pca9574
  nxp,pca9575
  nxp,pca9698
  nxp,pcal6524
  nxp,pcal9555a
  maxim,max7310
  maxim,max7312
  maxim,max7313
  maxim,max7315
  ti,pca6107
  ti,pca9536
  ti,tca6408
  ti,tca6416
  ti,tca6424
  ti,tca9539
  ti,tca9554
  onnn,pca9654
  exar,xra1202
• gpio-controller: if used as gpio expander.
• #gpio-cells: if used as gpio expander.
• interrupt-controller: if to be used as interrupt expander.
• #interrupt-cells: if to be used as interrupt expander.

Optional properties:

• reset-gpios: GPIO specification for the RESET input. This is an

   active low signal to the PCA953x.
  

• vcc-supply: power supply regulator.

Example:

gpio@20 {
    compatible = "nxp,pca9505";
    reg = <0x20>;
    pinctrl-names = "default";
    pinctrl-0 = <&pinctrl_pca9505>;
    interrupt-parent = <&gpio3>;
    interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
};

Example with Interrupts:

gpio99: gpio@22 {
    compatible = "nxp,pcal6524";
    reg = <0x22>;
    interrupt-parent = <&gpio6>;
    interrupts = <1 IRQ_TYPE_EDGE_FALLING>;    /* gpio6_161 */
    interrupt-controller;
    #interrupt-cells = <2>;
    vcc-supply = <&vdds_1v8_main>;
    gpio-controller;
    #gpio-cells = <2>;
    gpio-line-names =
        "hdmi-ct-hpd", "hdmi.ls-oe", "p02", "p03", "vibra", "fault2", "p06", "p07",
        "en-usb", "en-host1", "en-host2", "chg-int", "p14", "p15", "mic-int", "en-modem",
        "shdn-hs-amp", "chg-status+red", "green", "blue", "en-esata", "fault1", "p26", "p27";
};

ts3a227@3b {
    compatible = "ti,ts3a227e";
    reg = <0x3b>;
    interrupt-parent = <&gpio99>;
    interrupts = <14 IRQ_TYPE_EDGE_RISING>;
    ti,micbias = <0>;    /* 2.1V */
};