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path: root/arch/arm/mach-uniphier/ph1-pro4/early_clkrst_init.c
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/*
 * Copyright (C) 2011-2015 Panasonic Corporation
 *   Author: Masahiro Yamada <yamada.m@jp.panasonic.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <asm/io.h>
#include <mach/sc-regs.h>

void early_clkrst_init(void)
{
	u32 tmp;

	/* deassert reset */
	tmp = readl(SC_RSTCTRL);
	tmp |= SC_RSTCTRL_NRST_UMC1 | SC_RSTCTRL_NRST_UMC0;
	writel(tmp, SC_RSTCTRL);
	readl(SC_RSTCTRL); /* dummy read */

	/* privide clocks */
	tmp = readl(SC_CLKCTRL);
	tmp |= SC_CLKCTRL_CEN_UMC | SC_CLKCTRL_CEN_SBC | SC_CLKCTRL_CEN_PERI;
	writel(tmp, SC_CLKCTRL);
	readl(SC_CLKCTRL); /* dummy read */
}
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