u-boot/arch/arm/cpu/armv7/u8500/clock.c

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/*
* (C) Copyright 2009 ST-Ericsson
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/hardware.h>
DECLARE_GLOBAL_DATA_PTR;
struct clkrst {
unsigned int pcken;
unsigned int pckdis;
unsigned int kcken;
unsigned int kckdis;
};
static unsigned int clkrst_base[] = {
U8500_CLKRST1_BASE,
U8500_CLKRST2_BASE,
U8500_CLKRST3_BASE,
0,
U8500_CLKRST5_BASE,
U8500_CLKRST6_BASE,
U8500_CLKRST7_BASE, /* ED only */
};
/* Turn on peripheral clock at PRCC level */
void u8500_clock_enable(int periph, int cluster, int kern)
{
struct clkrst *clkrst = (struct clkrst *) clkrst_base[periph - 1];
if (kern != -1)
writel(1 << kern, &clkrst->kcken);
if (cluster != -1)
writel(1 << cluster, &clkrst->pcken);
}