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-uniphier/clk/clk-ld20.c

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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2017 Socionext Inc.
*/
#include <linux/bitops.h>
#include <linux/io.h>
#include "../init.h"
#include "../sc64-regs.h"
#define SDCTRL_EMMC_HW_RESET 0x59810280
void uniphier_ld20_clk_init(void)
{
u32 tmp;
tmp = readl(SC_RSTCTRL6);
tmp |= BIT(8); /* Mali */
writel(tmp, SC_RSTCTRL6);
tmp = readl(SC_CLKCTRL6);
tmp |= BIT(8); /* Mali */
writel(tmp, SC_CLKCTRL6);
/* TODO: use "mmc-pwrseq-emmc" */
writel(1, SDCTRL_EMMC_HW_RESET);
}