1 /* SPDX-License-Identifier: BSD-2-Clause */ 2 /* 3 * Copyright 2017-2019 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 #include <compiler.h> 32 33 /* i.MX6/7D */ 34 #define WDT_WCR 0x00 35 #define WDT_WCR_WDA BIT(5) 36 #define WDT_WCR_SRS BIT(4) 37 #define WDT_WCR_WRE BIT(3) 38 #define WDT_WCR_WDE BIT(2) 39 #define WDT_WCR_WDZST BIT(0) 40 41 #define WDT_WSR 0x02 42 #define WDT_SEQ1 0x5555 43 #define WDT_SEQ2 0xAAAA 44 45 /* 7ULP */ 46 #define WDOG_CNT 0x4 47 #define WDOG_TOVAL 0x8 48 49 #define REFRESH_SEQ0 0xA602 50 #define REFRESH_SEQ1 0xB480 51 #define REFRESH ((REFRESH_SEQ1 << 16) | REFRESH_SEQ0) 52 53 #define UNLOCK_SEQ0 0xC520 54 #define UNLOCK_SEQ1 0xD928 55 #define UNLOCK ((UNLOCK_SEQ1 << 16) | UNLOCK_SEQ0) 56 57 #define WDOG_CS 0x0 58 #define WDOG_CS_CMD32EN BIT(13) 59 #define WDOG_CS_ULK BIT(11) 60 #define WDOG_CS_RCS BIT(10) 61 #define WDOG_CS_EN BIT(7) 62 #define WDOG_CS_UPDATE BIT(5) 63 64 /* Exposed for psci reset */ 65 void __noreturn imx_wdog_restart(bool external_reset); 66 #endif 67