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/include/dt-bindings/pinctrl/pinctrl-zynqmp.h

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/*
* MIO pin configuration defines for Xilinx ZynqMP
*
* Copyright (C) 2017 Xilinx, Inc.
* Author: Chirag Parekh <chirag.parekh@xilinx.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _DT_BINDINGS_PINCTRL_ZYNQMP_H
#define _DT_BINDINGS_PINCTRL_ZYNQMP_H
/* Bit value for IO standards */
#define IO_STANDARD_LVCMOS33 0
#define IO_STANDARD_LVCMOS18 1
/* Bit values for Slew Rates */
#define SLEW_RATE_FAST 0
#define SLEW_RATE_SLOW 1
/* Bit values for Pin inputs */
#define PIN_INPUT_TYPE_CMOS 0
#define PIN_INPUT_TYPE_SCHMITT 1
#endif /* _DT_BINDINGS_PINCTRL_ZYNQMP_H */