[PATCH 6/9] dt-bindings: watchdog: xilinx: Add binding for Versal watchdog

From: Srinivas Neeli <srinivas.neeli@xilinx.com>
To: linux@roeck-us.net, michal.simek@xilinx.com,
	shubhrajyoti.datta@xilinx.com, sgoud@xilinx.com
Cc: wim@linux-watchdog.org, linux-watchdog@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, git@xilinx.com
Subject: [PATCH 6/9] dt-bindings: watchdog: xilinx: Add binding for Versal watchdog
Date: Thu, 16 Jan 2020 18:56:54 +0530	[thread overview]
Message-ID: <1579181217-31127-7-git-send-email-srinivas.neeli@xilinx.com> (raw)
In-Reply-To: <1579181217-31127-1-git-send-email-srinivas.neeli@xilinx.com>

From: Srinivas Goud <srinivas.goud@xilinx.com>

Updated watchdog binding for Versal window watchdog.
Added timeout-sec DT property.
timeout-sec is optional property for Versal window watchdog.

Signed-off-by: Srinivas Goud <srinivas.goud@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---
 .../devicetree/bindings/watchdog/of-xilinx-wdt.txt  | 21 ++++++++++++++++++---
 1 file changed, 18 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/watchdog/of-xilinx-wdt.txt b/Documentation/devicetree/bindings/watchdog/of-xilinx-wdt.txt
index c6ae9c9d5e3e..10d68003158d 100644
--- a/Documentation/devicetree/bindings/watchdog/of-xilinx-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/of-xilinx-wdt.txt
@@ -1,21 +1,28 @@
-Xilinx AXI/PLB soft-core watchdog Device Tree Bindings
----------------------------------------------------------
+Xilinx AXI/PLB soft-core watchdog and window watchdog Device Tree Bindings
+--------------------------------------------------------------------------
 
 Required properties:
 - compatible		: Should be "xlnx,xps-timebase-wdt-1.00.a" or
-			  "xlnx,xps-timebase-wdt-1.01.a".
+			  "xlnx,xps-timebase-wdt-1.01.a" or
+			  "xlnx,versal-wwdt-1.0".
 - reg			: Physical base address and size
 
 Optional properties:
 - clocks		: Input clock specifier. Refer to common clock
 			  bindings.
 - clock-frequency	: Frequency of clock in Hz
+
+Optional properties for AXI/PLB soft-core watchdog:
 - xlnx,wdt-enable-once	: 0 - Watchdog can be restarted
 			  1 - Watchdog can be enabled just once
 - xlnx,wdt-interval	: Watchdog timeout interval in 2^<val> clock cycles,
 			  <val> is integer from 8 to 31.
 
+Optional properties for window watchdog:
+- timeout-sec          : Watchdog timeout value (in seconds).
+
 Example:
+Xilinx AXI/PLB soft-core watchdog:
 axi-timebase-wdt@40100000 {
 	clock-frequency = <50000000>;
 	compatible = "xlnx,xps-timebase-wdt-1.00.a";
@@ -24,3 +31,11 @@ axi-timebase-wdt@40100000 {
 	xlnx,wdt-enable-once = <0x0>;
 	xlnx,wdt-interval = <0x1b>;
 } ;
+
+Xilinx Versal window watchdog:
+watchdog@fd4d0000 {
+	compatible = "xlnx,versal-wwdt-1.0";
+	reg = <0x0 0xfd4d0000 0x0 0x10000>;
+	clocks = <&clk25>;
+	timeout-sec = <10>;
+} ;
-- 
2.7.4

