1. cf99d02 imx: mx27 move GPIO_PORTx to gpio.h by Peng Fan · Fri May 15 07:29:13 2015 +0800
  2. d79de1d Add GPL-2.0+ SPDX-License-Identifier to source files by Wolfgang Denk · Mon Jul 08 09:37:19 2013 +0200
  3. cf233ed gpio: add gpio api support to mx27 (v4) by trem · Sat Aug 25 05:30:33 2012 +0000