bindings/gpio/8xxx_gpio.txt

1 GPIO controllers on MPC8xxx SoCs
3 This is for the non-QE/CPM/GUTs GPIO controllers as found on
6 Every GPIO controller node must have #gpio-cells property defined,
7 this information will be used to translate gpio-specifiers.
8 See bindings/gpio/gpio.txt for details of how to specify GPIO
11 The GPIO module usually is connected to the SoC's internal interrupt
12 controller, see bindings/interrupt-controller/interrupts.txt (the
13 interrupt client nodes section) for details how to specify this GPIO
16 The GPIO module may serve as another interrupt controller (cascaded to
17 the SoC's internal interrupt controller).  See the interrupt controller
18 nodes section in bindings/interrupt-controller/interrupts.txt for
22 - compatible:		"fsl,<chip>-gpio" followed by "fsl,mpc8349-gpio"
23 			for 83xx, "fsl,mpc8572-gpio" for 85xx, or
24 			"fsl,mpc8610-gpio" for 86xx.
25 - #gpio-cells:		Should be two. The first cell is the pin number
28 - interrupts:		Interrupt mapping for GPIO IRQ.
29 - gpio-controller:	Marks the port as GPIO controller.
32 - interrupt-controller:	Empty boolean property which marks the GPIO
33 			module as an IRQ controller.
34 - #interrupt-cells:	Should be two.  Defines the number of integer
36 			this interrupt controller.  The first cell
41 			GPIO module depends on the actual SoC.
43 Example of gpio-controller nodes for a MPC8347 SoC:
45 	gpio1: gpio-controller@c00 {
46 		#gpio-cells = <2>;
47 		compatible = "fsl,mpc8347-gpio", "fsl,mpc8349-gpio";
49 		interrupt-parent = <&ipic>;
51 		gpio-controller;
52 		interrupt-controller;
53 		#interrupt-cells = <2>;
56 	gpio2: gpio-controller@d00 {
57 		#gpio-cells = <2>;
58 		compatible = "fsl,mpc8347-gpio", "fsl,mpc8349-gpio";
60 		interrupt-parent = <&ipic>;
62 		gpio-controller;
65 Example of a peripheral using the GPIO module as an IRQ controller:
68 		compatible = "funky-fpga";
70 		interrupt-parent = <&gpio1>;