xref: /optee_os/core/include/drivers/imx_wdog.h (revision 1bb929836182ecb96d2d9d268daa807c67596396)
1 /* SPDX-License-Identifier: BSD-2-Clause */
2 /*
3  * Copyright 2017 NXP
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright notice,
9  * this list of conditions and the following disclaimer.
10  *
11  * 2. Redistributions in binary form must reproduce the above copyright notice,
12  * this list of conditions and the following disclaimer in the documentation
13  * and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
19  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25  * POSSIBILITY OF SUCH DAMAGE.
26  */
27 
28 #ifndef __IMX_WDOG_H
29 #define __IMX_WDOG_H
30 
31 /* i.MX6/7D */
32 #define WDT_WCR		0x00
33 #define WDT_WCR_WDA	BIT(5)
34 #define WDT_WCR_SRS	BIT(4)
35 #define WDT_WCR_WRE	BIT(3)
36 #define WDT_WCR_WDE	BIT(2)
37 #define WDT_WCR_WDZST	BIT(0)
38 
39 #define WDT_WSR		0x02
40 #define WDT_SEQ1	0x5555
41 #define WDT_SEQ2	0xAAAA
42 
43 /* Exposed for psci reset */
44 void imx_wdog_restart(void);
45 #endif
46