From: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Date: Tue, 28 Sep 2021 06:01:59 +0000 (+0530)
Subject: watchdog: versal: Add support for expire now
X-Git-Url: http://git.dujemihanovic.xyz/img/sics.gif?a=commitdiff_plain;h=dced079c53b283e15f04282f405de410a9be584d;p=u-boot.git

watchdog: versal: Add support for expire now

Wdt expire command makes the wdt to count least possible ticks(1)
and expires immediately. Add expire_now option to the xlnx_wwdt_ops
and implement it by calling xlnx_wwdt_start() with minimum possible
count(1).

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/1632808919-8600-3-git-send-email-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

diff --git a/drivers/watchdog/xilinx_wwdt.c b/drivers/watchdog/xilinx_wwdt.c
index d8b2ae7248..d582e3cc8f 100644
--- a/drivers/watchdog/xilinx_wwdt.c
+++ b/drivers/watchdog/xilinx_wwdt.c
@@ -144,6 +144,11 @@ static int xlnx_wwdt_start(struct udevice *dev, u64 timeout_ms, ulong flags)
 	return 0;
 }
 
+static int xlnx_wwdt_expire_now(struct udevice *dev, ulong flags)
+{
+	return xlnx_wwdt_start(dev, XWT_WWDT_CNT_MIN, flags);
+}
+
 static int xlnx_wwdt_probe(struct udevice *dev)
 {
 	int ret;
@@ -182,6 +187,7 @@ static const struct wdt_ops xlnx_wwdt_ops = {
 	.start = xlnx_wwdt_start,
 	.reset = xlnx_wwdt_reset,
 	.stop = xlnx_wwdt_stop,
+	.expire_now = xlnx_wwdt_expire_now,
 };
 
 static const struct udevice_id xlnx_wwdt_ids[] = {