What:		/sys/class/power_supply/rt9756-*/watchdog_timer
Date:		Dec 2025
KernelVersion:	6.19
Contact:	ChiYuan Huang <cy_huang@richtek.com>
Description:
		This entry shows and sets the watchdog timer when rt9756 charger
		operates in charging mode. When the timer expires, the device
		will disable the charging. To prevent the timer expires, any
		host communication can make the timer restarted.

		Access: Read, Write

		Valid values:
		- 500, 1000, 5000, 30000, 40000, 80000, 128000 or 255000 (milliseconds),
		- 0: disabled

What:		/sys/class/power_supply/rt9756-*/operation_mode
Date:		Dec 2025
KernelVersion:	6.19
Contact:	ChiYuan Huang <cy_huang@richtek.com>
Description:
		This entry shows and set the operation mode when rt9756 charger
		operates in charging phase. If 'bypass' mode is used, internal
		path will connect vbus directly to vbat. Else, default 'div2'
		mode for the switch-cap charging.

		Access: Read, Write

		Valid values:
		- 'bypass' or 'div2'