linux/Documentation/devicetree/bindings/gpio/gpio-stericsson-coh901.txt
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   1ST-Ericsson COH 901 571/3 GPIO controller
   2
   3Required properties:
   4- compatible: Compatible property value should be "stericsson,gpio-coh901"
   5- reg: Physical base address of the controller and length of memory mapped
   6  region.
   7- interrupts: the 0...n interrupts assigned to the different GPIO ports/banks.
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