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Having UFS power info available in sysfs makes it easier to tell the state of the link during runtime considering we have a bunch of power saving features and various combinations for backward compatibility. Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Bean Huo <beanhuo@micron.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Can Guo <quic_cang@quicinc.com> Link: https://lore.kernel.org/r/1698890324-7374-1-git-send-email-quic_cang@quicinc.com Reviewed-by: Avri Altman <avri.altman@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>