Re: [PATCH v1 1/2] scsi: dt-bindings: ufs: Add vcc-voltage-level for UFS

[nguyenb]

On 2020-09-13 02:35, Avri Altman wrote:
> > UFS's specifications supports a range of Vcc operating
> > voltage levels. Add documentation for the UFS's Vcc voltage
> > levels setting.
> >
> > Signed-off-by: Can Guo <cang@xxxxxxxxxxxxxx>
> > Signed-off-by: Asutosh Das <asutoshd@xxxxxxxxxxxxxx>
> > Signed-off-by: Bao D. Nguyen <nguyenb@xxxxxxxxxxxxxx>
> > ---
> >  Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt
> > b/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt
> > index 415ccdd..7257b32 100644
> > --- a/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt
> > +++ b/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt
> > @@ -23,6 +23,8 @@ Optional properties:
> >                            with "phys" attribute, provides phandle to 
> > UFS PHY node
> >  - vdd-hba-supply        : phandle to UFS host controller supply 
> > regulator node
> >  - vcc-supply            : phandle to VCC supply regulator node
> > +- vcc-voltage-level     : specifies voltage levels for VCC supply.
> For ufs3.1+ devices
Thanks for the comments, Avri.
I am not clear what this comment means. Could you please clarify?
> > +                          Should be specified in pairs (min, max), 
> > units uV.
> >  - vccq-supply           : phandle to VCCQ supply regulator node
> >  - vccq2-supply          : phandle to VCCQ2 supply regulator node
> >  - vcc-supply-1p8        : For embedded UFS devices, valid VCC range 
> > is 1.7-1.95V
> > --
> Why are you removing all other docs?
> They are still relevant for non ufs3.1 devices.
I did not remove anything. You may be confused by the "-" used as 
listing in the original document.