1 // SPDX-License-Identifier: GPL-2.0-or-later
38 	unsigned int enable;  member
44 	.enable			= BIT(22),
50 	.enable			= BIT(19),
67 	tc_reboot |= meson_wdt->data->enable;  in meson_wdt_restart()
70 		writel(tc_reboot, meson_wdt->wdt_base + MESON_WDT_TC);  in meson_wdt_restart()
81 	writel(0, meson_wdt->wdt_base + MESON_WDT_RESET);  in meson_wdt_ping()
92 	reg = readl(meson_wdt->wdt_base + MESON_WDT_TC);  in meson_wdt_change_timeout()
93 	reg &= ~meson_wdt->data->terminal_count_mask;  in meson_wdt_change_timeout()
94 	reg |= MESON_SEC_TO_TC(timeout, meson_wdt->data->count_unit);  in meson_wdt_change_timeout()
95 	writel(reg, meson_wdt->wdt_base + MESON_WDT_TC);  in meson_wdt_change_timeout()
101 	wdt_dev->timeout = timeout;  in meson_wdt_set_timeout()
114 	reg = readl(meson_wdt->wdt_base + MESON_WDT_TC);  in meson_wdt_stop()
115 	reg &= ~meson_wdt->data->enable;  in meson_wdt_stop()
116 	writel(reg, meson_wdt->wdt_base + MESON_WDT_TC);  in meson_wdt_stop()
126 	meson_wdt_change_timeout(wdt_dev, meson_wdt->wdt_dev.timeout);  in meson_wdt_start()
129 	reg = readl(meson_wdt->wdt_base + MESON_WDT_TC);  in meson_wdt_start()
130 	reg |= meson_wdt->data->enable;  in meson_wdt_start()
131 	writel(reg, meson_wdt->wdt_base + MESON_WDT_TC);  in meson_wdt_start()
153 	{ .compatible = "amlogic,meson6-wdt", .data = &meson6_wdt_data },
154 	{ .compatible = "amlogic,meson8-wdt", .data = &meson6_wdt_data },
155 	{ .compatible = "amlogic,meson8b-wdt", .data = &meson8b_wdt_data },
156 	{ .compatible = "amlogic,meson8m2-wdt", .data = &meson8b_wdt_data },
163 	struct device *dev = &pdev->dev;  in meson_wdt_probe()
169 		return -ENOMEM;  in meson_wdt_probe()
171 	meson_wdt->wdt_base = devm_platform_ioremap_resource(pdev, 0);  in meson_wdt_probe()
172 	if (IS_ERR(meson_wdt->wdt_base))  in meson_wdt_probe()
173 		return PTR_ERR(meson_wdt->wdt_base);  in meson_wdt_probe()
175 	meson_wdt->data = device_get_match_data(dev);  in meson_wdt_probe()
177 	meson_wdt->wdt_dev.parent = dev;  in meson_wdt_probe()
178 	meson_wdt->wdt_dev.info = &meson_wdt_info;  in meson_wdt_probe()
179 	meson_wdt->wdt_dev.ops = &meson_wdt_ops;  in meson_wdt_probe()
180 	meson_wdt->wdt_dev.max_timeout =  in meson_wdt_probe()
181 		meson_wdt->data->terminal_count_mask / meson_wdt->data->count_unit;  in meson_wdt_probe()
182 	meson_wdt->wdt_dev.min_timeout = MESON_WDT_MIN_TIMEOUT;  in meson_wdt_probe()
183 	meson_wdt->wdt_dev.timeout = min_t(unsigned int,  in meson_wdt_probe()
185 					   meson_wdt->wdt_dev.max_timeout);  in meson_wdt_probe()
187 	watchdog_set_drvdata(&meson_wdt->wdt_dev, meson_wdt);  in meson_wdt_probe()
189 	watchdog_init_timeout(&meson_wdt->wdt_dev, timeout, dev);  in meson_wdt_probe()
190 	watchdog_set_nowayout(&meson_wdt->wdt_dev, nowayout);  in meson_wdt_probe()
191 	watchdog_set_restart_priority(&meson_wdt->wdt_dev, 128);  in meson_wdt_probe()
193 	meson_wdt_stop(&meson_wdt->wdt_dev);  in meson_wdt_probe()
195 	watchdog_stop_on_reboot(&meson_wdt->wdt_dev);  in meson_wdt_probe()
196 	err = devm_watchdog_register_device(dev, &meson_wdt->wdt_dev);  in meson_wdt_probe()
201 		 meson_wdt->wdt_dev.timeout, nowayout);  in meson_wdt_probe()
221 		 "Watchdog cannot be stopped once started (default="