Documentation/devicetree/bindings/pinctrl/oxnas,pinctrl.txt

   1 * Oxford Semiconductor OXNAS SoC Family Pin Controller
   2
   3 Please refer to pinctrl-bindings.txt, ../gpio/gpio.txt, and
   4 ../interrupt-controller/interrupts.txt for generic information regarding
   5 pin controller, GPIO, and interrupt bindings.
   6
   7 OXNAS 'pin configuration node' is a node of a group of pins which can be
   8 used for a specific device or function. This node represents configurations of
   9 pins, optional function, and optional mux related configuration.
  10
  11 Required properties for pin controller node:
  12  - compatible: "oxsemi,ox810se-pinctrl" or "oxsemi,ox820-pinctrl"
  13  - oxsemi,sys-ctrl: a phandle to the system controller syscon node
  14
  15 Required properties for pin configuration sub-nodes:
  16  - pins: List of pins to which the configuration applies.
  17
  18 Optional properties for pin configuration sub-nodes:
  19 ----------------------------------------------------
  20  - function: Mux function for the specified pins.
  21  - bias-pull-up: Enable weak pull-up.
  22
  23 Example:
  24
  25 pinctrl: pinctrl {
  26         compatible = "oxsemi,ox810se-pinctrl";
  27
  28         /* Regmap for sys registers */
  29         oxsemi,sys-ctrl = <&sys>;
  30
  31         pinctrl_uart2: pinctrl_uart2 {
  32                 uart2a {
  33                         pins = "gpio31";
  34                         function = "fct3";
  35                 };
  36                 uart2b {
  37                         pins = "gpio32";
  38                         function = "fct3";
  39                 };
  40         };
  41 };
  42
  43 uart2: serial@900000 {
  44         compatible = "ns16550a";
  45         reg = <0x900000 0x100000>;
  46         clocks = <&sysclk>;
  47         interrupts = <29>;
  48         reg-shift = <0>;
  49         fifo-size = <16>;
  50         reg-io-width = <1>;
  51         current-speed = <115200>;
  52         no-loopback-test;
  53         resets = <&reset 22>;
  54         pinctrl-names = "default";
  55         pinctrl-0 = <&pinctrl_uart2>;
  56 };