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author | John Rigby <john.rigby@linaro.org> | 2011-04-19 10:42:40 +0000 |
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committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-06-01 19:22:41 +0200 |
commit | be72e0c8c5f6a31198dbf076005dd7a6449aa418 (patch) | |
tree | 643bed59b9155e63cd3305d1e5ef52d3bf0d0d62 /arch/arm/cpu/armv7/u8500/clock.c | |
parent | 92ff2d82b02f02544488bbaa631c96dff55303ff (diff) | |
download | u-boot-imx-be72e0c8c5f6a31198dbf076005dd7a6449aa418.zip u-boot-imx-be72e0c8c5f6a31198dbf076005dd7a6449aa418.tar.gz u-boot-imx-be72e0c8c5f6a31198dbf076005dd7a6449aa418.tar.bz2 |
armv7: Add ST-Ericsson u8500 arch
Based on ST-Ericsson internal git repo.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: John Rigby <john.rigby@linaro.org>
CC: Albert Aribaud <albert.aribaud@free.fr>
Diffstat (limited to 'arch/arm/cpu/armv7/u8500/clock.c')
-rw-r--r-- | arch/arm/cpu/armv7/u8500/clock.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/u8500/clock.c b/arch/arm/cpu/armv7/u8500/clock.c new file mode 100644 index 0000000..9e3b873 --- /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 <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); +} |