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watchdog: versal: Add support for expire now

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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>
This commit is contained in:
Ashok Reddy Soma 2021-09-28 11:31:59 +05:30 committed by Michal Simek
parent 8c287ed8c3
commit dced079c53
1 changed files with 6 additions and 0 deletions
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6
drivers/watchdog/xilinx_wwdt.c
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@ -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[] = {