Re: [PATCH v3 2/3] dt-bindings: fpga: Add binding doc for versal fpga manager

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On Wed, Mar 10, 2021 at 10:12 AM Rob Herring <robh@xxxxxxxxxx> wrote:
>
> On Wed, Mar 10, 2021 at 3:50 AM Nava kishore Manne <navam@xxxxxxxxxx> wrote:
> >
> > Hi Rob,
> >
> >         Thanks for providing the review comments.
> > Please find my response inline.
> >
> > > -----Original Message-----
> > > From: Rob Herring <robh@xxxxxxxxxx>
> > > Sent: Tuesday, March 9, 2021 1:50 AM
> > > To: Nava kishore Manne <navam@xxxxxxxxxx>
> > > Cc: mdf@xxxxxxxxxx; trix@xxxxxxxxxx; Michal Simek <michals@xxxxxxxxxx>;
> > > gregkh@xxxxxxxxxxxxxxxxxxx; Jolly Shah <JOLLYS@xxxxxxxxxx>; Rajan Vaja
> > > <RAJANV@xxxxxxxxxx>; arnd@xxxxxxxx; Manish Narani
> > > <MNARANI@xxxxxxxxxx>; Amit Sunil Dhamne <amitsuni@xxxxxxxxxx>; Tejas
> > > Patel <tejasp@xxxxxxxxxxxxxxx>; linux-fpga@xxxxxxxxxxxxxxx;
> > > devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; linux-arm-
> > > kernel@xxxxxxxxxxxxxxxxxxx; chinnikishore369@xxxxxxxxx; Appana Durga
> > > Kedareswara Rao <appanad@xxxxxxxxxx>
> > > Subject: Re: [PATCH v3 2/3] dt-bindings: fpga: Add binding doc for versal fpga
> > > manager
> > >
> > > On Thu, Mar 04, 2021 at 12:32:23PM +0530, Nava kishore Manne wrote:
> > > > From: Appana Durga Kedareswara rao <appana.durga.rao@xxxxxxxxxx>
> > > >
> > > > This patch adds binding doc for versal fpga manager driver.
> > >
> > > Why do you need a DT entry for this? Can't the Versal firmware driver
> > > instantiate the fpga-mgr device?
> > >
> > This dt entry is need to handle the fpga regions properly for both full and Partial bitstream loading use cases and it cannot be done by Versal firmware driver instantiate.
>
> Ah yes, I forgot about that.

Looking at this some more, please convert xlnx,zynqmp-firmware.txt to
schema and add the node for this there. We don't need a whole other
schema file just for a node and compatible. Also, looks like
xlnx,zynqmp-pcap-fpga.txt is the prior version of the same thing, so
it should be handled in the schema too.

Rob



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