blob: 07b916dc9a9c02a4c1b2f82009d321a9cb7efd6b [file] [log] [blame]
/*
* Copyright (C) 2011-2014 Panasonic Corporation
* Copyright (C) 2015-2017 Socionext Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <spl.h>
#include <linux/io.h>
#include "../init.h"
#include "../sc-regs.h"
void uniphier_ld4_early_clk_init(void)
{
u32 tmp;
/* deassert reset */
if (spl_boot_device() != BOOT_DEVICE_NAND) {
tmp = readl(SC_RSTCTRL);
tmp &= ~SC_RSTCTRL_NRST_NAND;
writel(tmp, SC_RSTCTRL);
};
/* provide clocks */
tmp = readl(SC_CLKCTRL);
tmp |= SC_CLKCTRL_CEN_SBC | SC_CLKCTRL_CEN_PERI;
writel(tmp, SC_CLKCTRL);
readl(SC_CLKCTRL); /* dummy read */
}