watchdog: ep93xx: add DT support for Cirrus EP93xx

- Find register range from the device tree.

Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me>

diff --git a/drivers/watchdog/ep93xx_wdt.c b/drivers/watchdog/ep93xx_wdt.c
index 38e26f160b9a57fb7a86d787f87452b5b3bbe64d..e8b13901712cad1f2f5bd5c306d63335ac302256 100644 (file)
--- a/drivers/watchdog/ep93xx_wdt.c
+++ b/drivers/watchdog/ep93xx_wdt.c
@@ -21,6 +21,7 @@
  * daemon dies.
  */
 
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
 #include <linux/watchdog.h>
@@ -130,9 +131,18 @@ static int ep93xx_wdt_probe(struct platform_device *pdev)
        return 0;
 }
 
+#ifdef CONFIG_OF
+static const struct of_device_id ep93xx_wdt_of_ids[] = {
+       { .compatible = "cirrus,ep93xx-wdt" },
+       {},
+};
+MODULE_DEVICE_TABLE(of, ep93xx_wdt_of_ids);
+#endif
+
 static struct platform_driver ep93xx_wdt_driver = {
        .driver         = {
                .name   = "ep93xx-wdt",
+               .of_match_table = of_match_ptr(ep93xx_wdt_of_ids),
        },
        .probe          = ep93xx_wdt_probe,
 };