dts: v2m_beetle: Add WDOG support

This patch adds the ARM CMSDK WDOG support to the V2M Beetle device
tree.

Signed-off-by: Vincenzo Frascino <vincenzo.frascino@linaro.org>

arch/arm/soc/arm/beetle/soc.h

@@ -113,9 +113,6 @@
 /* CMSDK APB Dual Timer */
 #define CMSDK_APB_DTIMER _BEETLE_DTIMER_BASE
 
-/* CMSDK APB Watchdog */
-#define CMSDK_APB_WDOG _BEETLE_WDOG_BASE
-
 #endif /* !_ASMLANGUAGE */
 
 #endif /* _ARM_BEETLE_SOC_H_ */

dts/arm/v2m_beetle.dts

@@ -43,6 +43,11 @@
 			interrupts = <IRQ_UART1 3>;
 			current-speed = <115200>;
 		};
+
+		wdog0: wdog@40008000 {
+			compatible = "arm,cmsdk-watchdog";
+			reg = <0x40008000 0x1000>;
+		};
 	};
 };
 

dts/arm/v2m_beetle.fixup

@@ -10,3 +10,6 @@
 #define CMSDK_APB_UART_1_IRQ			ARM_CMSDK_UART_40005000_IRQ_0
 #define CONFIG_UART_CMSDK_APB_PORT1_IRQ_PRI	ARM_CMSDK_UART_40005000_IRQ_0_PRIORITY
 #define CONFIG_UART_CMSDK_APB_PORT1_BAUD_RATE	ARM_CMSDK_UART_40005000_CURRENT_SPEED
+
+/* CMSDK APB Watchdog */
+#define CMSDK_APB_WDOG				ARM_CMSDK_WATCHDOG_40008000_BASE_ADDRESS_0

dts/arm/yaml/arm,cmsdk-watchdog.yaml

@@ -0,0 +1,21 @@
+---
+title: ARM CMSDK WATCHDOG
+id: arm,cmsdk-watchdog
+version: 0.1
+
+description: >
+    This binding gives a base representation of the ARM CMSDK WATCHDOG
+
+properties:
+  - compatible:
+      type: string
+      category: required
+      description: compatible strings
+      constraint: "arm,cmsdk-watchdog"
+
+  - reg:
+      type: array
+      description: mmio register space
+      generation: define
+      category: required
+...