Documentation/devicetree/bindings/gpio/gpio-pca953x.txt

   1 * NXP PCA953x I2C GPIO multiplexer
   2
   3 Required properties:
   4  - compatible: Has to contain one of the following:
   5         nxp,pca9505
   6         nxp,pca9534
   7         nxp,pca9535
   8         nxp,pca9536
   9         nxp,pca9537
  10         nxp,pca9538
  11         nxp,pca9539
  12         nxp,pca9554
  13         nxp,pca9555
  14         nxp,pca9556
  15         nxp,pca9557
  16         nxp,pca9574
  17         nxp,pca9575
  18         nxp,pca9698
  19         nxp,pcal6524
  20         nxp,pcal9555a
  21         maxim,max7310
  22         maxim,max7312
  23         maxim,max7313
  24         maxim,max7315
  25         ti,pca6107
  26         ti,pca9536
  27         ti,tca6408
  28         ti,tca6416
  29         ti,tca6424
  30         ti,tca9539
  31         ti,tca9554
  32         onnn,pca9654
  33         exar,xra1202
  34  - gpio-controller: if used as gpio expander.
  35  - #gpio-cells: if used as gpio expander.
  36  - interrupt-controller: if to be used as interrupt expander.
  37  - #interrupt-cells: if to be used as interrupt expander.
  38
  39 Optional properties:
  40  - interrupts: interrupt specifier for the device's interrupt output.
  41  - reset-gpios: GPIO specification for the RESET input. This is an
  42                 active low signal to the PCA953x.
  43  - vcc-supply:  power supply regulator.
  44
  45 Example:
  46
  47
  48         gpio@20 {
  49                 compatible = "nxp,pca9505";
  50                 reg = <0x20>;
  51                 pinctrl-names = "default";
  52                 pinctrl-0 = <&pinctrl_pca9505>;
  53                 gpio-controller;
  54                 #gpio-cells = <2>;
  55                 interrupt-parent = <&gpio3>;
  56                 interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
  57         };
  58
  59
  60 Example with Interrupts:
  61
  62
  63         gpio99: gpio@22 {
  64                 compatible = "nxp,pcal6524";
  65                 reg = <0x22>;
  66                 interrupt-parent = <&gpio6>;
  67                 interrupts = <1 IRQ_TYPE_EDGE_FALLING>; /* gpio6_161 */
  68                 interrupt-controller;
  69                 #interrupt-cells = <2>;
  70                 vcc-supply = <&vdds_1v8_main>;
  71                 gpio-controller;
  72                 #gpio-cells = <2>;
  73                 gpio-line-names =
  74                         "hdmi-ct-hpd", "hdmi.ls-oe", "p02", "p03", "vibra", "fault2", "p06", "p07",
  75                         "en-usb", "en-host1", "en-host2", "chg-int", "p14", "p15", "mic-int", "en-modem",
  76                         "shdn-hs-amp", "chg-status+red", "green", "blue", "en-esata", "fault1", "p26", "p27";
  77         };
  78
  79         ts3a227@3b {
  80                 compatible = "ti,ts3a227e";
  81                 reg = <0x3b>;
  82                 interrupt-parent = <&gpio99>;
  83                 interrupts = <14 IRQ_TYPE_EDGE_RISING>;
  84                 ti,micbias = <0>;       /* 2.1V */
  85         };
  86