watchdog: mtk_wdt: mt2712: Add reset controller

Add reset controller for 2712.
Besides watchdog, MTK toprgu module alsa provide sub-system (eg, audio,
camera, codec and connectivity) software reset functionality.

Signed-off-by: yong.liang <yong.liang@mediatek.com>
Signed-off-by: Jiaxin Yu <jiaxin.yu@mediatek.com>
Reviewed-by: Yingjoe Chen <yingjoe.chen@mediatek.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Matthias Brugger <matthias.bgg@gmail.com>
Link: https://lore.kernel.org/r/20200115085828.27791-5-yong.liang@mediatek.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

drivers/watchdog/mtk_wdt.c

@@ -9,6 +9,7 @@
  * Based on sunxi_wdt.c
  */
 
+#include <dt-bindings/reset-controller/mt2712-resets.h>
 #include <dt-bindings/reset-controller/mt8183-resets.h>
 #include <linux/delay.h>
 #include <linux/err.h>
@@ -67,6 +68,10 @@ struct mtk_wdt_data {
 	int toprgu_sw_rst_num;
 };
 
+static const struct mtk_wdt_data mt2712_data = {
+	.toprgu_sw_rst_num = MT2712_TOPRGU_SW_RST_NUM,
+};
+
 static const struct mtk_wdt_data mt8183_data = {
 	.toprgu_sw_rst_num = MT8183_TOPRGU_SW_RST_NUM,
 };
@@ -314,6 +319,7 @@ static int mtk_wdt_resume(struct device *dev)
 #endif
 
 static const struct of_device_id mtk_wdt_dt_ids[] = {
+	{ .compatible = "mediatek,mt2712-wdt", .data = &mt2712_data },
 	{ .compatible = "mediatek,mt6589-wdt" },
 	{ .compatible = "mediatek,mt8183-wdt", .data = &mt8183_data },
 	{ /* sentinel */ }