diff options
| author | Macpaul Lin <macpaul@andestech.com> | 2011-01-05 17:12:23 +0800 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2011-01-25 22:18:57 +0100 |
| commit | f8ea15f769773943050fa3ba444a5514066441d4 (patch) | |
| tree | 8ad4cbc370fd914fb0a0f88cbb96f8db11aa46bc | |
| parent | e009cdeb63308f291c54b173484401aab4a3fe54 (diff) | |
| download | u-boot-imx-f8ea15f769773943050fa3ba444a5514066441d4.zip u-boot-imx-f8ea15f769773943050fa3ba444a5514066441d4.tar.gz u-boot-imx-f8ea15f769773943050fa3ba444a5514066441d4.tar.bz2 | |
ftpmu010: support faraday ftpmu010 driver
Faraday's ftpmu010 is a power managemnet unit which support cpu
sleep and frequency scaling. It has been integrated into many SoC.
This patch also move ftpmu010 to a proper place for later enhancement.
Signed-off-by: Macpaul Lin <macpaul@andestech.com>
| -rw-r--r-- | drivers/power/Makefile | 1 | ||||
| -rw-r--r-- | drivers/power/ftpmu010.c | 65 | ||||
| -rw-r--r-- | drivers/power/ftpmu010.h (renamed from arch/arm/include/asm/arch-a320/ftpmu010.h) | 0 |
3 files changed, 66 insertions, 0 deletions
diff --git a/drivers/power/Makefile b/drivers/power/Makefile index c9ba1ae..ead00f8 100644 --- a/drivers/power/Makefile +++ b/drivers/power/Makefile @@ -25,6 +25,7 @@ include $(TOPDIR)/config.mk LIB := $(obj)libpower.o +COBJS-$(CONFIG_FTPMU010_POWER) += ftpmu010.o COBJS-$(CONFIG_TWL4030_POWER) += twl4030.o COBJS-$(CONFIG_TWL6030_POWER) += twl6030.o diff --git a/drivers/power/ftpmu010.c b/drivers/power/ftpmu010.c new file mode 100644 index 0000000..7924ac1 --- /dev/null +++ b/drivers/power/ftpmu010.c @@ -0,0 +1,65 @@ +/* + * (C) Copyright 2009 Faraday Technology + * Po-Yu Chuang <ratbert@faraday-tech.com> + * + * Copyright (C) 2010 Andes Technology Corporation + * Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com> + * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com> + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <common.h> +#include <asm/io.h> +#include "ftpmu010.h" + +static struct ftpmu010 *pmu = (struct ftpmu010 *)CONFIG_FTPMU010_BASE; + +void ftpmu010_32768osc_enable(void) +{ + unsigned int oscc; + + /* enable the 32768Hz oscillator */ + oscc = readl(&pmu->OSCC); + oscc &= ~(FTPMU010_OSCC_OSCL_OFF | FTPMU010_OSCC_OSCL_TRI); + writel(oscc, &pmu->OSCC); + + /* wait until ready */ + while (!(readl(&pmu->OSCC) & FTPMU010_OSCC_OSCL_STABLE)) + ; + + /* select 32768Hz oscillator */ + oscc = readl(&pmu->OSCC); + oscc |= FTPMU010_OSCC_OSCL_RTCLSEL; + writel(oscc, &pmu->OSCC); +} + +void ftpmu010_dlldis_disable(void) +{ + unsigned int pdllcr0; + + pdllcr0 = readl(&pmu->PDLLCR0); + pdllcr0 |= FTPMU010_PDLLCR0_DLLDIS; + writel(pdllcr0, &pmu->PDLLCR0); +} + +void ftpmu010_sdram_clk_disable(unsigned int cr0) +{ + unsigned int pdllcr0; + + pdllcr0 = readl(&pmu->PDLLCR0); + pdllcr0 |= FTPMU010_PDLLCR0_HCLKOUTDIS(cr0); + writel(pdllcr0, &pmu->PDLLCR0); +} diff --git a/arch/arm/include/asm/arch-a320/ftpmu010.h b/drivers/power/ftpmu010.h index 8ef7a37..8ef7a37 100644 --- a/arch/arm/include/asm/arch-a320/ftpmu010.h +++ b/drivers/power/ftpmu010.h |