upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/board/micronas/vct/vctv/reg_gpio.h

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/*
* (C) Copyright 2008 Stefan Roese <sr@denx.de>, DENX Software Engineering
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#define GPIO1_BASE 0x00044000
#define GPIO2_BASE 0x00048000
/* Instances */
#define GPIO_INSTANCES 2
/* Relative offsets of the register adresses */
#define GPIO_SWPORTA_DR_OFFS 0x00000000
#define GPIO_SWPORTA_DR(base) ((base) + GPIO_SWPORTA_DR_OFFS)
#define GPIO_SWPORTA_DDR_OFFS 0x00000004
#define GPIO_SWPORTA_DDR(base) ((base) + GPIO_SWPORTA_DDR_OFFS)
#define GPIO_EXT_PORTA_OFFS 0x00000050
#define GPIO_EXT_PORTA(base) ((base) + GPIO_EXT_PORTA_OFFS)