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63 lines
1.1 KiB
63 lines
1.1 KiB
4 months ago
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/*
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* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef IMX_WDOG_H
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#define IMX_WDOG_H
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#include <stdint.h>
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#include <arch.h>
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struct wdog_regs {
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uint16_t wcr;
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uint16_t wsr;
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uint16_t wrsr;
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uint16_t wicr;
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uint16_t wmcr;
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};
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/* WCR bits */
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#define WCR_WDZST BIT(0)
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#define WCR_WDBG BIT(1)
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#define WCR_WDE BIT(2)
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#define WCR_WDT BIT(3)
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#define WCR_SRS BIT(4)
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#define WCR_WDA BIT(5)
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#define WCR_SRE BIT(6)
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#define WCR_WDW BIT(7)
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#define WCR_WT(x) ((x) << 8)
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/* WSR bits */
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#define WSR_FIRST 0x5555
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#define WSR_SECOND 0xAAAA
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/* WRSR bits */
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#define WRSR_SFTW BIT(0)
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#define WRSR_TOUT BIT(1)
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#define WRSR_POR BIT(4)
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/* WICR bits */
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static inline int wicr_calc_wict(int sec, int half_sec)
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{
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int wict_bits;
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/* Represents WICR bits 7 - 0 */
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wict_bits = ((sec << 1) | (half_sec ? 1 : 0));
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return wict_bits;
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}
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#define WICR_WTIS BIT(14)
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#define WICR_WIE BIT(15)
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/* WMCR bits */
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#define WMCR_PDE BIT(0)
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/* External facing API */
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void imx_wdog_init(void);
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#endif /* IMX_WDOG_H */
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