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/arch/arm/mach-keystone/include/mach/clock-k2e.h

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/*
* K2E: Clock management APIs
*
* (C) Copyright 2012-2014
* Texas Instruments Incorporated, <www.ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __ASM_ARCH_CLOCK_K2E_H
#define __ASM_ARCH_CLOCK_K2E_H
#define PLLSET_CMD_LIST "<pa|ddr3>"
#define KS2_CLK1_6 sys_clk0_6_clk
#define CORE_PLL_800 {CORE_PLL, 16, 1, 2}
#define CORE_PLL_850 {CORE_PLL, 17, 1, 2}
#define CORE_PLL_1000 {CORE_PLL, 20, 1, 2}
#define CORE_PLL_1200 {CORE_PLL, 24, 1, 2}
#define PASS_PLL_1000 {PASS_PLL, 20, 1, 2}
#define CORE_PLL_1250 {CORE_PLL, 25, 1, 2}
#define CORE_PLL_1350 {CORE_PLL, 27, 1, 2}
#define CORE_PLL_1400 {CORE_PLL, 28, 1, 2}
#define CORE_PLL_1500 {CORE_PLL, 30, 1, 2}
#define DDR3_PLL_200 {DDR3_PLL, 4, 1, 2}
#define DDR3_PLL_400 {DDR3_PLL, 16, 1, 4}
#define DDR3_PLL_800 {DDR3_PLL, 16, 1, 2}
#define DDR3_PLL_333 {DDR3_PLL, 20, 1, 6}
/* k2e DEV supports 800, 850, 1000, 1250, 1350, 1400, 1500 MHz */
#define DEV_SUPPORTED_SPEEDS 0xFFF
#define ARM_SUPPORTED_SPEEDS 0
#endif