From 39d6d0db4eb5606ca1821dd8687b943c220b6ca8 Mon Sep 17 00:00:00 2001
From: Pavlo Hamov <p.hamov@venstar.com>
Date: Wed, 6 Oct 2021 15:30:52 +0300
Subject: [PATCH] drivers: watchdog: esp32s2 add support

Add support of esp32s2 WDT1 & WDT2 using base esp32 driver

Use dts to determine WDT driver state

Signed-off-by: Pavlo Hamov <p.hamov@venstar.com>
---
 drivers/watchdog/Kconfig.esp32    |  6 ++++--
 dts/xtensa/espressif/esp32s2.dtsi | 18 ++++++++++++++++++
 2 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/drivers/watchdog/Kconfig.esp32 b/drivers/watchdog/Kconfig.esp32
index 811b823da14..13aca00f112 100644
--- a/drivers/watchdog/Kconfig.esp32
+++ b/drivers/watchdog/Kconfig.esp32
@@ -3,9 +3,11 @@
 # Copyright (C) 2017 Intel Corporation
 # SPDX-License-Identifier: Apache-2.0
 
+DT_COMPAT_ESP32_WDT := espressif,esp32-watchdog
+
 config WDT_ESP32
 	bool "ESP32 Watchdog (WDT) Driver"
-	depends on SOC_ESP32
-	default y
+	depends on SOC_ESP32 || SOC_ESP32S2
+	default $(dt_compat_enabled,$(DT_COMPAT_ESP32_WDT))
 	help
 	  Enable WDT driver for ESP32.
diff --git a/dts/xtensa/espressif/esp32s2.dtsi b/dts/xtensa/espressif/esp32s2.dtsi
index 0ed045ab3db..43756489c83 100644
--- a/dts/xtensa/espressif/esp32s2.dtsi
+++ b/dts/xtensa/espressif/esp32s2.dtsi
@@ -177,6 +177,24 @@
 			clocks = <&rtc ESP32_HSPI_MODULE>;
 			status = "disabled";
 		};
+
+		wdt0: watchdog@3f41f048 {
+			compatible = "espressif,esp32-watchdog";
+			reg = <0x3f41f048 0x20>;
+			interrupts = <TG0_WDT_LEVEL_INTR_SOURCE>;
+			interrupt-parent = <&intc>;
+			label = "WDT_0";
+			status = "disabled";
+		};
+
+		wdt1: watchdog@3f42f048 {
+			compatible = "espressif,esp32-watchdog";
+			reg = <0x3f42f048 0x20>;
+			interrupts = <TG1_WDT_LEVEL_INTR_SOURCE>;
+			interrupt-parent = <&intc>;
+			label = "WDT_1";
+			status = "disabled";
+		};
 	};
 
 };