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-Intel IXP4xx XScale Networking Processors GPIO
-
-This GPIO controller is found in the Intel IXP4xx processors.
-It supports 16 GPIO lines.
-
-The interrupt portions of the GPIO controller is hierarchical:
-the synchronous edge detector is part of the GPIO block, but the
-actual enabling/disabling of the interrupt line is done in the
-main IXP4xx interrupt controller which has a 1:1 mapping for
-the first 12 GPIO lines to 12 system interrupts.
-
-The remaining 4 GPIO lines can not be used for receiving
-interrupts.
-
-The interrupt parent of this GPIO controller must be the
-IXP4xx interrupt controller.
-
-Required properties:
-
-- compatible : Should be
- "intel,ixp4xx-gpio"
-- reg : Should contain registers location and length
-- gpio-controller : marks this as a GPIO controller
-- #gpio-cells : Should be 2, see gpio/gpio.txt
-- interrupt-controller : marks this as an interrupt controller
-- #interrupt-cells : a standard two-cell interrupt, see
- interrupt-controller/interrupts.txt
-
-Example:
-
-gpio0: gpio@c8004000 {
- compatible = "intel,ixp4xx-gpio";
- reg = <0xc8004000 0x1000>;
- gpio-controller;
- #gpio-cells = <2>;
- interrupt-controller;
- #interrupt-cells = <2>;
-};