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/cpu/armv7/stv0991/clock.c

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/*
* (C) Copyright 2014
* Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <asm/io.h>
#include <asm/arch/hardware.h>
#include <asm/arch/stv0991_cgu.h>
#include<asm/arch/stv0991_periph.h>
static struct stv0991_cgu_regs *const stv0991_cgu_regs = \
(struct stv0991_cgu_regs *) (CGU_BASE_ADDR);
void clock_setup(int peripheral)
{
switch (peripheral) {
case UART_CLOCK_CFG:
writel(UART_CLK_CFG, &stv0991_cgu_regs->uart_freq);
break;
case ETH_CLOCK_CFG:
break;
default:
break;
}
}