Re: [EXT] [PATCH v4 6/8] scsi: ufs: Add dev ref clock gating wait time support

[Can Guo]

On 2020-01-24 07:11, Bean Huo (beanhuo) wrote:
> Hi,  Can
>
> > In UFS version 3.0, a newly added attribute bRefClkGatingWaitTime 
> > defines the
> > minimum time for which the reference clock is required by device 
> > during
> > transition to LS-MODE or HIBERN8 state. Make this change to reflect 
> > the new
> > requirement by adding delays before turning off the clock.
> >
> > Signed-off-by: Can Guo <cang@xxxxxxxxxxxxxx>
> > ---
> >  drivers/scsi/ufs/ufs.h    |  3 +++
> >  drivers/scsi/ufs/ufshcd.c | 41
> > +++++++++++++++++++++++++++++++++++++++++
> >  2 files changed, 44 insertions(+)
> >
> > diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h index
> > 3327981..385bac8 100644
> > --- a/drivers/scsi/ufs/ufs.h
> > +++ b/drivers/scsi/ufs/ufs.h
> > @@ -168,6 +168,7 @@ enum attr_idn {
> >  	QUERY_ATTR_IDN_FFU_STATUS		= 0x14,
> >  	QUERY_ATTR_IDN_PSA_STATE		= 0x15,
> >  	QUERY_ATTR_IDN_PSA_DATA_SIZE		= 0x16,
> > +	QUERY_ATTR_IDN_REF_CLK_GATING_WAIT_TIME	= 0x17,
> >  };
> >
> >  /* Descriptor idn for Query requests */ @@ -530,6 +531,8 @@ struct
> > ufs_dev_info {
> >  	bool f_power_on_wp_en;
> >  	/* Keeps information if any of the LU is power on write protected */
> >  	bool is_lu_power_on_wp;
> > +	u16 spec_version;
> > +	u32 clk_gating_wait_us;
> >  };
> This one also need rebase
>
> Thanks,
>
> //Bean

Shall rebase this series.

Thanks,

Can Guo