2011-04-19 10:42:40 +00:00
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/*
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* (C) Copyright 2009 ST-Ericsson
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/hardware.h>
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DECLARE_GLOBAL_DATA_PTR;
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struct clkrst {
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unsigned int pcken;
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unsigned int pckdis;
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unsigned int kcken;
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unsigned int kckdis;
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};
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static unsigned int clkrst_base[] = {
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U8500_CLKRST1_BASE,
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U8500_CLKRST2_BASE,
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U8500_CLKRST3_BASE,
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0,
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U8500_CLKRST5_BASE,
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U8500_CLKRST6_BASE,
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U8500_CLKRST7_BASE, /* ED only */
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};
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/* Turn on peripheral clock at PRCC level */
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void u8500_clock_enable(int periph, int cluster, int kern)
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{
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struct clkrst *clkrst = (struct clkrst *) clkrst_base[periph - 1];
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if (kern != -1)
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writel(1 << kern, &clkrst->kcken);
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if (cluster != -1)
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writel(1 << cluster, &clkrst->pcken);
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}
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2012-07-31 08:59:26 +00:00
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void db8500_clocks_init(void)
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{
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/*
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* Enable all clocks. This is u-boot, we can enable it all. There is no
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* powersave in u-boot.
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*/
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u8500_clock_enable(1, 9, -1); /* GPIO0 */
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u8500_clock_enable(2, 11, -1);/* GPIO1 */
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u8500_clock_enable(3, 8, -1); /* GPIO2 */
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u8500_clock_enable(5, 1, -1); /* GPIO3 */
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u8500_clock_enable(3, 6, 6); /* UART2 */
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u8500_clock_enable(3, 3, 3); /* I2C0 */
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u8500_clock_enable(1, 5, 5); /* SDI0 */
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u8500_clock_enable(2, 4, 2); /* SDI4 */
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u8500_clock_enable(6, 6, -1); /* MTU0 */
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u8500_clock_enable(3, 4, 4); /* SDI2 */
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/*
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* Enabling clocks for all devices which are AMBA devices in the
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* kernel. Otherwise they will not get probe()'d because the
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* peripheral ID register will not be powered.
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*/
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/* XXX: some of these differ between ED/V1 */
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u8500_clock_enable(1, 1, 1); /* UART1 */
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u8500_clock_enable(1, 0, 0); /* UART0 */
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u8500_clock_enable(3, 2, 2); /* SSP1 */
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u8500_clock_enable(3, 1, 1); /* SSP0 */
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u8500_clock_enable(2, 8, -1); /* SPI0 */
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u8500_clock_enable(2, 5, 3); /* MSP2 */
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}
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