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>,
Srinivas Neeli <srinivas.neeli@xilinx.com>
Subject: [PATCH 6/9] dt-bindings: watchdog: xilinx: Add binding for Versal watchdog
Date: Mon, 15 Mar 2021 16:16:51 +0530 [thread overview]
Message-ID: <1615805214-24857-7-git-send-email-srinivas.neeli@xilinx.com> (raw)
In-Reply-To: <1615805214-24857-1-git-send-email-srinivas.neeli@xilinx.com>
Updated watchdog binding for Versal window watchdog.
Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
---
.../devicetree/bindings/watchdog/of-xilinx-wdt.txt | 33 ++++++++++++++++++++--
1 file changed, 30 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..57903645d685 100644
--- a/Documentation/devicetree/bindings/watchdog/of-xilinx-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/of-xilinx-wdt.txt
@@ -1,21 +1,37 @@
-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).
+ if unset, the default timeout is 10 seconds.
+- pretimeout-sec : Watchdog pretimeout value in seconds.
+- interrupts : IRQ line for the WWDT.
+- interrupt-names : Interrupt line names "wdt" or "wwdt_reset_pending".
+ wdt - will assert high after first (closed) window
+ timer expires. wwdt_reset_pending - will assert high
+ after second (open) window timer expires if WRP
+ (Watchdog Reset pending) is configured with third
+ (SST) timer.
+
Example:
+Xilinx AXI/PLB soft-core watchdog:
axi-timebase-wdt@40100000 {
clock-frequency = <50000000>;
compatible = "xlnx,xps-timebase-wdt-1.00.a";
@@ -24,3 +40,14 @@ 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>;
+ interrupt-names = "wdt", "wwdt_reset_pending";
+ interrupts = <0x0 0x64 0x1>, <0x0 0x6D 0x1>;
+ pretimeout-sec = <5>;
+} ;
--
2.7.4
next prev parent reply other threads:[~2021-03-15 10:48 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-15 10:46 [PATCH 0/9] watchdog: of_xilinx_wdt: Update on xilinx watchdog driver Srinivas Neeli
2021-03-15 10:46 ` [PATCH 1/9] watchdog: of_xilinx_wdt: Add comment to spinlock Srinivas Neeli
2021-03-16 2:21 ` Guenter Roeck
2021-03-15 10:46 ` [PATCH 2/9] watchdog: of_xilinx_wdt: Used BIT macro Srinivas Neeli
2021-03-16 2:23 ` Guenter Roeck
2021-03-24 6:06 ` Srinivas Neeli
2021-03-15 10:46 ` [PATCH 3/9] watchdog: of_xilinx_wdt: Used dev_dbg() Srinivas Neeli
2021-03-16 2:27 ` Guenter Roeck
2021-03-15 10:46 ` [PATCH 4/9] watchdog: of_xilinx_wdt: Initialize watchdog via data structure Srinivas Neeli
2021-03-15 10:46 ` [PATCH 5/9] watchdog: of_xilinx_wdt: Introduce wdttype enum for identification Srinivas Neeli
2021-03-15 10:46 ` Srinivas Neeli [this message]
2021-03-15 10:46 ` [PATCH 7/9] watchdog: of_xilinx_wdt: Add Versal Window watchdog support Srinivas Neeli
2021-03-16 2:31 ` Guenter Roeck
2021-03-24 6:04 ` Srinivas Neeli
2021-03-24 14:01 ` Guenter Roeck
2021-03-15 10:46 ` [PATCH 8/9] watchdog: of_xilinx_wdt: Remove passing null pointer Srinivas Neeli
2021-03-16 2:33 ` Guenter Roeck
2021-03-15 10:46 ` [PATCH 9/9] watchdog: of_xilinx_wdt: Skip printing pointer value Srinivas Neeli
2021-03-16 2:34 ` Guenter Roeck
-- strict thread matches above, loose matches on Subject: below --
2020-01-16 13:26 [PATCH 0/9] watchdog: of_xilinx_wdt: Update on watchdog driver Srinivas Neeli
2020-01-16 13:26 ` [PATCH 6/9] dt-bindings: watchdog: xilinx: Add binding for Versal watchdog Srinivas Neeli
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