watchdog: ROHM BD96801 PMIC WDG driver

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Introduce driver for WDG block on ROHM BD96801 scalable PMIC.

This driver only supports watchdog with I2C feeding and delayed
response detection. Whether the watchdog toggles PRSTB pin or
just causes an interrupt can be configured via device-tree.

The BD96801 PMIC HW supports also window watchdog (too early
feeding detection) and Q&A mode. These are not supported by
this driver.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/bb3a49d606e793a61b0c033170ff2a9f30f3c2a5.1719473802.git.mazziesaccount@gmail.com
Signed-off-by: Lee Jones <lee@kernel.org>

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Matti Vaittinen 2024-06-27 10:43:55 +03:00 • committed by Lee Jones

parent a9b7ce28fd

commit 09dad69757

3 changed files with 430 additions and 0 deletions

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13

drivers/watchdog/Kconfig

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1

drivers/watchdog/Makefile

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416

drivers/watchdog/bd96801_wdt.c

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