1 NVIDIA Tegra GPIO controller
4 - compatible : "nvidia,tegra<chip>-gpio"
5 - reg : Physical base address and length of the controller's registers.
6 - interrupts : The interrupt outputs from the controller. For Tegra20,
7 there should be 7 interrupts specified, and for Tegra30, there should
8 be 8 interrupts specified.
9 - #gpio-cells : Should be two. The first cell is the pin number and the
10 second cell is used to specify optional parameters:
11 - bit 0 specifies polarity (0 for normal, 1 for inverted)
12 - gpio-controller : Marks the device node as a GPIO controller.
13 - #interrupt-cells : Should be 2.
14 The first cell is the GPIO number.
15 The second cell is used to specify flags:
16 bits[3:0] trigger type and level flags:
17 1 = low-to-high edge triggered.
18 2 = high-to-low edge triggered.
19 4 = active high level-sensitive.
20 8 = active low level-sensitive.
21 Valid combinations are 1, 2, 3, 4, 8.
22 - interrupt-controller : Marks the device node as an interrupt controller.
27 compatible = "nvidia,tegra20-gpio";
28 reg = < 0x6000d000 0x1000 >;
29 interrupts = < 0 32 0x04
38 #interrupt-cells = <2>;