What:		/sys/kernel/debug/<cros-ec-device>/uptime
Date:		June 2019
KernelVersion:	5.3
Description:
		A u32 providing the time since EC booted in ms. This is
		is used for synchronizing the AP host time with the EC
		log. An error is returned if the command is not supported
		by the EC or there is a communication problem.

What:		/sys/kernel/debug/<cros-ec-device>/last_resume_result
Date:		June 2019
KernelVersion:	5.3
Description:
		Some ECs have a feature where they will track transitions to
		the (Intel) processor's SLP_S0 line, in order to detect cases
		where a system failed to go into S0ix. When the system resumes,
		an EC with this feature will return a summary of SLP_S0
		transitions that occurred. The last_resume_result file returns
		the most recent response from the AP's resume message to the EC.

		The bottom 31 bits contain a count of the number of SLP_S0
		transitions that occurred since the suspend message was
		received. Bit 31 is set if the EC attempted to wake the
		system due to a timeout when watching for SLP_S0 transitions.
		Callers can use this to detect a wake from the EC due to
		S0ix timeouts. The result will be zero if no suspend
		transitions have been attempted, or the EC does not support
		this feature.

		Output will be in the format: "0x%08x\n".