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This enhancement is > crucial for the internal maintenance operations of the UFS device. The pa= tch > enables the device to handle both absolute and relative time information. > Furthermore, it includes periodic task to update the RTC in accordance wi= th > the UFS Spec, ensuring the accuracy of RTC information for the device's > internal processes. >=20 > RTC and qTimestamp serve distinct purposes. The RTC provides a coarse > level of granularity with, at best, approximate single-second resolution.= This > makes the RTC well-suited for the device to determine the approximate age > of programmed blocks after being updated by the host. On the other hand, > qTimestamp offers nanosecond granularity and is specifically designed for > synchronizing Device Error Log entries with corresponding host-side logs. >=20 > Given that the RTC has been a standard feature since UFS Spec 2.0, and > qTimestamp was introduced in UFS Spec 4.0, the majority of UFS devices > currently on the market rely on RTC. Therefore, it is advisable to contin= ue > supporting RTC in the Linux kernel. This ensures compatibility with the > prevailing UFS device implementations and facilitates seamless integratio= n > with existing hardware. > By maintaining support for RTC, we ensure broad compatibility and avoid > potential issues arising from deviations in device specifications across > different UFS versions. >=20 > Signed-off-by: Bean Huo > Signed-off-by: Mike Bi > Signed-off-by: Luca Porzio Acked-by: Avri Altman