watchdog: renesas-wdt: add support for rza

Describe the WDT hardware in the RZ/A series.

Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/Documentation/devicetree/bindings/watchdog/renesas-wdt.txt b/Documentation/devicetree/bindings/watchdog/renesas-wdt.txt
index da24e31334177768a399b5bab1a4f5c3826103a5..9e306afbbd49e91b689f6e7fbf63a47d6167dfaf 100644 (file)
--- a/Documentation/devicetree/bindings/watchdog/renesas-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/renesas-wdt.txt
@@ -2,10 +2,11 @@ Renesas Watchdog Timer (WDT) Controller
 
 Required properties:
 - compatible : Should be "renesas,<soctype>-wdt", and
-              "renesas,rcar-gen3-wdt" as fallback.
+              "renesas,rcar-gen3-wdt" or "renesas,rza-wdt" as fallback.
               Examples with soctypes are:
                 - "renesas,r8a7795-wdt" (R-Car H3)
                 - "renesas,r8a7796-wdt" (R-Car M3-W)
+                - "renesas,r7s72100-wdt" (RZ/A1)
 
   When compatible with the generic version, nodes must list the SoC-specific
   version corresponding to the platform first, followed by the generic
@@ -17,6 +18,7 @@ Required properties:
 Optional properties:
 - timeout-sec : Contains the watchdog timeout in seconds
 - power-domains : the power domain the WDT belongs to
+- interrupts: Some WDTs have an interrupt when used in interval timer mode
 
 Examples: