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| author | Sylvain Lemieux <slemieux@tycoint.com> | 2016-03-04 13:44:07 -0500 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2016-03-16 21:09:41 +0100 |
| commit | 25b286c02defa26b136818b17909789102225aa8 (patch) | |
| tree | 03ca8da652a465001ab8a249d03b054f981759eb /drivers/watchdog | |
| parent | 4ed5443d9175f4b6008ca18601672c812a1fe93b (diff) | |
| download | linux-25b286c02defa26b136818b17909789102225aa8.tar.gz linux-25b286c02defa26b136818b17909789102225aa8.tar.bz2 linux-25b286c02defa26b136818b17909789102225aa8.zip | |
watchdog: pnx4008: add support for soft reset
Add support for explicit soft reset using the reboot mode.
The default reboot mode behavior is unchanged;
you can overwrite the default reboot type in the board specific file
"DT_MACHINE_START" definition using the "reboot_mode" parameter.
Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/pnx4008_wdt.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/watchdog/pnx4008_wdt.c b/drivers/watchdog/pnx4008_wdt.c index f3be522986b6..51be66e8a473 100644 --- a/drivers/watchdog/pnx4008_wdt.c +++ b/drivers/watchdog/pnx4008_wdt.c @@ -129,9 +129,16 @@ static int pnx4008_wdt_set_timeout(struct watchdog_device *wdd, static int pnx4008_restart_handler(struct watchdog_device *wdd, unsigned long mode, void *cmd) { - /* Instant assert of RESETOUT_N with pulse length 1mS */ - writel(13000, WDTIM_PULSE(wdt_base)); - writel(M_RES2 | RESFRC1 | RESFRC2, WDTIM_MCTRL(wdt_base)); + if (mode == REBOOT_SOFT) { + /* Force match output active */ + writel(EXT_MATCH0, WDTIM_EMR(wdt_base)); + /* Internal reset on match output (RESOUT_N not asserted) */ + writel(M_RES1, WDTIM_MCTRL(wdt_base)); + } else { + /* Instant assert of RESETOUT_N with pulse length 1mS */ + writel(13000, WDTIM_PULSE(wdt_base)); + writel(M_RES2 | RESFRC1 | RESFRC2, WDTIM_MCTRL(wdt_base)); + } /* Wait for watchdog to reset system */ mdelay(1000); |