diff --git a/drivers/watchdog/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c
index ddc4d2ff9d9f..cb7ec07c8e3d 100644
--- a/drivers/watchdog/mtk_wdt.c
+++ b/drivers/watchdog/mtk_wdt.c
@@ -66,6 +66,7 @@
 #define DRV_NAME		"mtk-wdt"
 #define DRV_VERSION		"1.0"
 
+#define MT6589_TOPRGU_SW_RST_NUM	12
 #define MT7988_TOPRGU_SW_RST_NUM	24
 
 static bool nowayout = WATCHDOG_NOWAYOUT;
@@ -90,6 +91,10 @@ static const struct mtk_wdt_data mt2712_data = {
 	.toprgu_sw_rst_num = MT2712_TOPRGU_SW_RST_NUM,
 };
 
+static const struct mtk_wdt_data mt6589_data = {
+	.toprgu_sw_rst_num = MT6589_TOPRGU_SW_RST_NUM,
+};
+
 static const struct mtk_wdt_data mt6735_data = {
 	.toprgu_sw_rst_num = MT6735_TOPRGU_RST_NUM,
 };
@@ -543,7 +548,7 @@ static int mtk_wdt_resume(struct device *dev)
 
 static const struct of_device_id mtk_wdt_dt_ids[] = {
 	{ .compatible = "mediatek,mt2712-wdt", .data = &mt2712_data },
-	{ .compatible = "mediatek,mt6589-wdt" },
+	{ .compatible = "mediatek,mt6589-wdt", .data = &mt6589_data },
 	{ .compatible = "mediatek,mt6735-wdt", .data = &mt6735_data },
 	{ .compatible = "mediatek,mt6795-wdt", .data = &mt6795_data },
 	{ .compatible = "mediatek,mt7986-wdt", .data = &mt7986_data },