imx_wdogreg.h

/*-
 * Copyright (c) 2012, 2013 The FreeBSD Foundation
 * All rights reserved.
 *
 * This software was developed by Oleksandr Rybalko under sponsorship
 * from the FreeBSD Foundation.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1.   Redistributions of source code must retain the above copyright
 *  notice, this list of conditions and the following disclaimer.
 * 2.   Redistributions in binary form must reproduce the above copyright
 *  notice, this list of conditions and the following disclaimer in the
 *  documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD: head/sys/arm/freescale/imx/imx_wdogreg.h 291367 2015-11-26 17:26:52Z ian $
 */

#define WDOG_CLK_FREQ   32768

#define WDOG_CR_REG 0x00    /* Control Register */
#define     WDOG_CR_WT_MASK     0xff00  /* Count of 0.5 sec */
#define     WDOG_CR_WT_SHIFT    8
#define     WDOG_CR_WDW     (1 << 7) /* Suspend WDog */
#define     WDOG_CR_WDA     (1 << 5) /* Don't touch ipp_wdog */
#define     WDOG_CR_SRS     (1 << 4) /* Don't touch sys_reset */
#define     WDOG_CR_WDT     (1 << 3) /* Assert ipp_wdog on tout */
#define     WDOG_CR_WDE     (1 << 2) /* WDog Enable */
#define     WDOG_CR_WDBG        (1 << 1) /* Suspend when DBG mode */
#define     WDOG_CR_WDZST       (1 << 0) /* Suspend when LP mode */

#define WDOG_SR_REG 0x02    /* Service Register */
#define     WDOG_SR_STEP1       0x5555
#define     WDOG_SR_STEP2       0xaaaa

#define WDOG_RSR_REG    0x04    /* Reset Status Register */
#define     WDOG_RSR_POR        (1 << 4) /* Due to Power-On Reset */
#define     WDOG_RSR_TOUT       (1 << 1) /* Due WDog timeout reset */
#define     WDOG_RSR_SFTW       (1 << 0) /* Due Soft reset */

#define WDOG_ICR_REG    0x06    /* Interrupt Control Register */
#define     WDOG_ICR_WIE        (1 << 15) /* Enable Interrupt */
#define     WDOG_ICR_WTIS       (1 << 14) /* Interrupt has occurred */
#define     WDOG_ICR_WTCT_MASK  0x00ff
#define     WDOG_ICR_WTCT_SHIFT 0   /* Interrupt hold time */

#define WDOG_MCR_REG    0x08    /* Miscellaneous Control Register */
#define     WDOG_MCR_PDE        (1 << 0)