drivers/watchdog/mt7621_wdt.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  * Ralink MT7621/MT7628 built-in hardware watchdog timer
7  * This driver was based on: drivers/watchdog/rt2880_wdt.c
14 #include <linux/watchdog.h>
19 #include <asm/mach-ralink/ralink_regs.h>
40 		 "Watchdog cannot be stopped once started (default="
62 	w->timeout = t;  in mt7621_wdt_set_timeout()
73 	/* set the prescaler to 1ms == 1000us */  in mt7621_wdt_start()
76 	mt7621_wdt_set_timeout(w, w->timeout);  in mt7621_wdt_start()
112 	.identity = "Mediatek Watchdog",
133 	struct device *dev = &pdev->dev;  in mt7621_wdt_probe()
149 		 * Make sure to apply timeout from watchdog core, taking  in mt7621_wdt_probe()
154 		 * we first disable the watchdog, set the new prescaler  in mt7621_wdt_probe()
155 		 * and timeout, and then re-enable the watchdog.  in mt7621_wdt_probe()
171 	{ .compatible = "mediatek,mt7621-wdt" },
187 MODULE_DESCRIPTION("MediaTek MT762x hardware watchdog driver");