On Fri, 2022-10-14 at 10:44 +0800, 高严凯 wrote: > " UFSHCI has idle time before bringing Link into hibern8 mode, " I > think ufs put the link to h8 during the time no, it is ufs controller. see the ufshci spec: "Auto-Hibern8 Idle Timer Value (AH8ITV): This is the timer that UFS subsystem must be idle before UFS host *controller* may put UniPro link into Hibernate state autonomously. The idle timer value is multiplied by the indicated timer scale to yield an absolute timer value. .... ... Any non-zero value will enable Auto-Hibernate idle timer. UFS host controller shall put Unipro link out of Hibernate state when the link communication is required. The mechanism to decide when the Unipro link needs to become active is host controller specific implementation, and is transparent to the software."
