From be72e0c8c5f6a31198dbf076005dd7a6449aa418 Mon Sep 17 00:00:00 2001 From: John Rigby Date: Tue, 19 Apr 2011 10:42:40 +0000 Subject: armv7: Add ST-Ericsson u8500 arch Based on ST-Ericsson internal git repo. Signed-off-by: Mathieu Poirier Signed-off-by: John Rigby CC: Albert Aribaud --- arch/arm/cpu/armv7/u8500/clock.c | 56 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 arch/arm/cpu/armv7/u8500/clock.c (limited to 'arch/arm/cpu/armv7/u8500/clock.c') diff --git a/arch/arm/cpu/armv7/u8500/clock.c b/arch/arm/cpu/armv7/u8500/clock.c new file mode 100644 index 000000000..9e3b87394 --- /dev/null +++ b/arch/arm/cpu/armv7/u8500/clock.c @@ -0,0 +1,56 @@ +/* + * (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 +#include +#include + +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); +} -- cgit v1.2.3