1 // SPDX-License-Identifier: GPL-2.0
62 		return -ETIMEDOUT;  in imx7ulp_wdt_wait()
71 	u32 val = readl(wdt->base + WDOG_CS);  in imx7ulp_wdt_enable()
75 	writel(UNLOCK, wdt->base + WDOG_CNT);  in imx7ulp_wdt_enable()
76 	ret = imx7ulp_wdt_wait(wdt->base, WDOG_CS_ULK);  in imx7ulp_wdt_enable()
80 		writel(val | WDOG_CS_EN, wdt->base + WDOG_CS);  in imx7ulp_wdt_enable()
82 		writel(val & ~WDOG_CS_EN, wdt->base + WDOG_CS);  in imx7ulp_wdt_enable()
83 	imx7ulp_wdt_wait(wdt->base, WDOG_CS_RCS);  in imx7ulp_wdt_enable()
102 	writel(REFRESH, wdt->base + WDOG_CNT);  in imx7ulp_wdt_ping()
125 	writel(UNLOCK, wdt->base + WDOG_CNT);  in imx7ulp_wdt_set_timeout()
126 	ret = imx7ulp_wdt_wait(wdt->base, WDOG_CS_ULK);  in imx7ulp_wdt_set_timeout()
129 	writel(val, wdt->base + WDOG_TOVAL);  in imx7ulp_wdt_set_timeout()
130 	imx7ulp_wdt_wait(wdt->base, WDOG_CS_RCS);  in imx7ulp_wdt_set_timeout()
132 	wdog->timeout = timeout;  in imx7ulp_wdt_set_timeout()
150 	ret = imx7ulp_wdt_set_timeout(&wdt->wdd, 1);  in imx7ulp_wdt_restart()
211 	struct device *dev = &pdev->dev;  in imx7ulp_wdt_probe()
217 		return -ENOMEM;  in imx7ulp_wdt_probe()
221 	imx7ulp_wdt->base = devm_platform_ioremap_resource(pdev, 0);  in imx7ulp_wdt_probe()
222 	if (IS_ERR(imx7ulp_wdt->base))  in imx7ulp_wdt_probe()
223 		return PTR_ERR(imx7ulp_wdt->base);  in imx7ulp_wdt_probe()
225 	imx7ulp_wdt->clk = devm_clk_get(dev, NULL);  in imx7ulp_wdt_probe()
226 	if (IS_ERR(imx7ulp_wdt->clk)) {  in imx7ulp_wdt_probe()
227 		dev_err(dev, "Failed to get watchdog clock\n");  in imx7ulp_wdt_probe()
228 		return PTR_ERR(imx7ulp_wdt->clk);  in imx7ulp_wdt_probe()
231 	ret = clk_prepare_enable(imx7ulp_wdt->clk);  in imx7ulp_wdt_probe()
235 	ret = devm_add_action_or_reset(dev, imx7ulp_wdt_action, imx7ulp_wdt->clk);  in imx7ulp_wdt_probe()
239 	wdog = &imx7ulp_wdt->wdd;  in imx7ulp_wdt_probe()
240 	wdog->info = &imx7ulp_wdt_info;  in imx7ulp_wdt_probe()
241 	wdog->ops = &imx7ulp_wdt_ops;  in imx7ulp_wdt_probe()
242 	wdog->min_timeout = 1;  in imx7ulp_wdt_probe()
243 	wdog->max_timeout = MAX_TIMEOUT;  in imx7ulp_wdt_probe()
244 	wdog->parent = dev;  in imx7ulp_wdt_probe()
245 	wdog->timeout = DEFAULT_TIMEOUT;  in imx7ulp_wdt_probe()
251 	ret = imx7ulp_wdt_init(imx7ulp_wdt->base, wdog->timeout * WDOG_CLOCK_RATE);  in imx7ulp_wdt_probe()
262 	if (watchdog_active(&imx7ulp_wdt->wdd))  in imx7ulp_wdt_suspend()
263 		imx7ulp_wdt_stop(&imx7ulp_wdt->wdd);  in imx7ulp_wdt_suspend()
265 	clk_disable_unprepare(imx7ulp_wdt->clk);  in imx7ulp_wdt_suspend()
273 	u32 timeout = imx7ulp_wdt->wdd.timeout * WDOG_CLOCK_RATE;  in imx7ulp_wdt_resume()
276 	ret = clk_prepare_enable(imx7ulp_wdt->clk);  in imx7ulp_wdt_resume()
280 	if (imx7ulp_wdt_is_enabled(imx7ulp_wdt->base))  in imx7ulp_wdt_resume()
281 		imx7ulp_wdt_init(imx7ulp_wdt->base, timeout);  in imx7ulp_wdt_resume()
283 	if (watchdog_active(&imx7ulp_wdt->wdd))  in imx7ulp_wdt_resume()
284 		imx7ulp_wdt_start(&imx7ulp_wdt->wdd);  in imx7ulp_wdt_resume()
293 	{ .compatible = "fsl,imx7ulp-wdt", },
301 		.name	= "imx7ulp-wdt",