watchdog: imx_sc: Add pretimeout support

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i.MX system controller watchdog can support pretimeout IRQ
via general SCU MU IRQ, it depends on IMX_SCU and driver MUST
be probed after SCU IPC ready, then enable corresponding SCU
IRQ group and register SCU IRQ notifier, when watchdog pretimeout
IRQ fires, SCU MU IRQ will be handled and watchdog pretimeout
notifier will be called to handle the event.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

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Anson Huang 2019-05-27 15:03:17 +08:00 • committed by Wim Van Sebroeck

parent b836005b4f

commit 15f7d7fc55

2 changed files with 106 additions and 20 deletions

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1

drivers/watchdog/Kconfig

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123

drivers/watchdog/imx_sc_wdt.c

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