RE: [PATCH v3 1/4] dt-bindings: firmware: Add bindings for ZynqMP firmware

[Jolly Shah]

Hi Rob,
Thanks for the review,

> -----Original Message-----
> From: Rob Herring [mailto:robh@xxxxxxxxxx]
> Sent: Tuesday, January 30, 2018 9:08 AM
> To: Jolly Shah <JOLLYS@xxxxxxxxxx>
> Cc: ard.biesheuvel@xxxxxxxxxx; mingo@xxxxxxxxxx;
> gregkh@xxxxxxxxxxxxxxxxxxx; matt@xxxxxxxxxxxxxxxxxxx;
> sudeep.holla@xxxxxxx; hkallweit1@xxxxxxxxx; keescook@xxxxxxxxxxxx;
> dmitry.torokhov@xxxxxxxxx; michal.simek@xxxxxxxxxx;
> mark.rutland@xxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; Jolly Shah
> <JOLLYS@xxxxxxxxxx>; Rajan Vaja <RAJANV@xxxxxxxxxx>
> Subject: Re: [PATCH v3 1/4] dt-bindings: firmware: Add bindings for ZynqMP
> firmware
> 
> On Wed, Jan 24, 2018 at 03:21:11PM -0800, Jolly Shah wrote:
> > Add documentation to describe Xilinx ZynqMP firmware driver bindings.
> > Firmware driver provides an interface to firmware APIs. Interface APIs
> > can be used by any driver to communicate to PMUFW (Platform Management
> > Unit).
> >
> > Signed-off-by: Jolly Shah <jollys@xxxxxxxxxx>
> > Signed-off-by: Rajan Vaja <rajanv@xxxxxxxxxx>
> > ---
> >  .../bindings/firmware/xilinx/xlnx,zynqmp-firmware.txt    | 16
> ++++++++++++++++
> >  1 file changed, 16 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmware
> > .txt
> >
> > diff --git
> > a/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmwa
> > re.txt
> > b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-firmwa
> > re.txt
> > new file mode 100644
> > index 0000000..a7aaf56
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/firmware/xilinx/xlnx,zynqmp-fi
> > +++ rmware.txt
> > @@ -0,0 +1,16 @@
> > +Xilinx Zynq MPSoC Firmware Device Tree Bindings
> > +
> > +The zynqmp-firmware node describes the interface to platform firmware.
> 
> Please define this a is child of /firmware.
>
I dint get you. It is already under firmware/xilinx.

 
> Also, some brief summary of what functions the firmware provides would be
> nice.
> 
Sure. Will add it in next version.


> > +
> > +Required properties:
> > + - compatible:	Must contain:  "xlnx,zynqmp-firmware"
> > + - method:	The method of calling the PM-API firmware layer.
> > +		Permitted values are:
> > +		 - "smc" : To be used in configurations without a hypervisor
> > +		 - "hvc" : To be used when hypervisor is present
> 
> Do you really need to support hvc?
Yes we do support hvc and smc both.

> 
> > +
> > +Examples:
> > +	zynqmp_firmware: zynqmp-firmware {
> > +		compatible = "xlnx,zynqmp-firmware";
> > +		method = "smc";
> > +	};
> > --
> > 2.7.4
> >