0001 Nomadik GPIO controller
0002
0003 Required properties:
0004 - compatible : Should be "st,nomadik-gpio".
0005 - reg : Physical base address and length of the controller's registers.
0006 - interrupts : The interrupt outputs from the controller.
0007 - #gpio-cells : Should be two:
0008 The first cell is the pin number.
0009 The second cell is used to specify optional parameters:
0010 - bits[3:0] trigger type and level flags:
0011 1 = low-to-high edge triggered.
0012 2 = high-to-low edge triggered.
0013 4 = active high level-sensitive.
0014 8 = active low level-sensitive.
0015 - gpio-controller : Marks the device node as a GPIO controller.
0016 - interrupt-controller : Marks the device node as an interrupt controller.
0017 - gpio-bank : Specifies which bank a controller owns.
0018 - st,supports-sleepmode : Specifies whether controller can sleep or not
0019
0020 Example:
0021
0022 gpio1: gpio@8012e080 {
0023 compatible = "st,nomadik-gpio";
0024 reg = <0x8012e080 0x80>;
0025 interrupts = <0 120 0x4>;
0026 #gpio-cells = <2>;
0027 gpio-controller;
0028 interrupt-controller;
0029 st,supports-sleepmode;
0030 gpio-bank = <1>;
0031 };
