--- zzzz-none-000/linux-3.10.107/drivers/watchdog/jz4740_wdt.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/watchdog/jz4740_wdt.c	2021-02-04 17:41:59.000000000 +0000
@@ -17,15 +17,14 @@
 #include <linux/moduleparam.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
-#include <linux/miscdevice.h>
 #include <linux/watchdog.h>
-#include <linux/init.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/device.h>
 #include <linux/clk.h>
 #include <linux/slab.h>
 #include <linux/err.h>
+#include <linux/of.h>
 
 #include <asm/mach-jz4740/timer.h>
 
@@ -144,6 +143,14 @@
 	.set_timeout = jz4740_wdt_set_timeout,
 };
 
+#ifdef CONFIG_OF
+static const struct of_device_id jz4740_wdt_of_matches[] = {
+	{ .compatible = "ingenic,jz4740-watchdog", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, jz4740_wdt_of_matches)
+#endif
+
 static int jz4740_wdt_probe(struct platform_device *pdev)
 {
 	struct jz4740_wdt_drvdata *drvdata;
@@ -167,6 +174,7 @@
 	jz4740_wdt->timeout = heartbeat;
 	jz4740_wdt->min_timeout = 1;
 	jz4740_wdt->max_timeout = MAX_HEARTBEAT;
+	jz4740_wdt->parent = &pdev->dev;
 	watchdog_set_nowayout(jz4740_wdt, nowayout);
 	watchdog_set_drvdata(jz4740_wdt, drvdata);
 
@@ -177,7 +185,7 @@
 		goto err_out;
 	}
 
-	drvdata->rtc_clk = clk_get(NULL, "rtc");
+	drvdata->rtc_clk = clk_get(&pdev->dev, "rtc");
 	if (IS_ERR(drvdata->rtc_clk)) {
 		dev_err(&pdev->dev, "cannot find RTC clock\n");
 		ret = PTR_ERR(drvdata->rtc_clk);
@@ -213,7 +221,7 @@
 	.remove = jz4740_wdt_remove,
 	.driver = {
 		.name = "jz4740-wdt",
-		.owner	= THIS_MODULE,
+		.of_match_table = of_match_ptr(jz4740_wdt_of_matches),
 	},
 };
 
@@ -222,5 +230,4 @@
 MODULE_AUTHOR("Paul Cercueil <paul@crapouillou.net>");
 MODULE_DESCRIPTION("jz4740 Watchdog Driver");
 MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
 MODULE_ALIAS("platform:jz4740-wdt");