linux-pinenote/arch/arm/include/asm/hardware/sp810.h

/*
 * arch/arm/include/asm/hardware/sp810.h
 *
 * ARM PrimeXsys System Controller SP810 header file
 *
 * Copyright (C) 2009 ST Microelectronics
 * Viresh Kumar<viresh.kumar@st.com>
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2. This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#ifndef __ASM_ARM_SP810_H
#define __ASM_ARM_SP810_H

#include <linux/io.h>

/* sysctl registers offset */
#define SCCTRL			0x000
#define SCSYSSTAT		0x004
#define SCIMCTRL		0x008
#define SCIMSTAT		0x00C
#define SCXTALCTRL		0x010
#define SCPLLCTRL		0x014
#define SCPLLFCTRL		0x018
#define SCPERCTRL0		0x01C
#define SCPERCTRL1		0x020
#define SCPEREN			0x024
#define SCPERDIS		0x028
#define SCPERCLKEN		0x02C
#define SCPERSTAT		0x030
#define SCSYSID0		0xEE0
#define SCSYSID1		0xEE4
#define SCSYSID2		0xEE8
#define SCSYSID3		0xEEC
#define SCITCR			0xF00
#define SCITIR0			0xF04
#define SCITIR1			0xF08
#define SCITOR			0xF0C
#define SCCNTCTRL		0xF10
#define SCCNTDATA		0xF14
#define SCCNTSTEP		0xF18
#define SCPERIPHID0		0xFE0
#define SCPERIPHID1		0xFE4
#define SCPERIPHID2		0xFE8
#define SCPERIPHID3		0xFEC
#define SCPCELLID0		0xFF0
#define SCPCELLID1		0xFF4
#define SCPCELLID2		0xFF8
#define SCPCELLID3		0xFFC

#define SCCTRL_TIMEREN0SEL_REFCLK	(0 << 15)
#define SCCTRL_TIMEREN0SEL_TIMCLK	(1 << 15)

#define SCCTRL_TIMEREN1SEL_REFCLK	(0 << 17)
#define SCCTRL_TIMEREN1SEL_TIMCLK	(1 << 17)

static inline void sysctl_soft_reset(void __iomem *base)
{
	/* switch to slow mode */
	writel(0x2, base + SCCTRL);

	/* writing any value to SCSYSSTAT reg will reset system */
	writel(0, base + SCSYSSTAT);
}

#endif	/* __ASM_ARM_SP810_H */