On Mon, Jun 17, 2019 at 05:08:45PM +0530, Manikanta Maddireddy wrote:
> 
> 
> On 17-Jun-19 5:00 PM, Thierry Reding wrote:
> > On Thu, May 16, 2019 at 11:23:05AM +0530, Manikanta Maddireddy wrote:
> >> Add DT binding for "reset-gpios" property which supports GPIO based PERST#
> >> signal.
> >>
> >> Signed-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>
> >> Reviewed-by: Rob Herring <robh@kernel.org>
> >> Acked-by: Thierry Reding <treding@nvidia.com>
> >> ---
> >> V4: No change
> >>
> >> V3: Moved to common pci binding doc
> >>
> >> V2: Using standard "reset-gpio" property
> >>
> >>  Documentation/devicetree/bindings/pci/pci.txt | 3 +++
> >>  1 file changed, 3 insertions(+)
> >>
> >> diff --git a/Documentation/devicetree/bindings/pci/pci.txt b/Documentation/devicetree/bindings/pci/pci.txt
> >> index c77981c5dd18..79124898aa5b 100644
> >> --- a/Documentation/devicetree/bindings/pci/pci.txt
> >> +++ b/Documentation/devicetree/bindings/pci/pci.txt
> >> @@ -24,3 +24,6 @@ driver implementation may support the following properties:
> >>     unsupported link speed, for instance, trying to do training for
> >>     unsupported link speed, etc.  Must be '4' for gen4, '3' for gen3, '2'
> >>     for gen2, and '1' for gen1. Any other values are invalid.
> >> +- reset-gpios:
> >> +   If present this property specifies PERST# GPIO. Host drivers can parse the
> >> +   GPIO and apply fundamental reset to endpoints.
> > As mentioned in patch 27/28, maybe mention here that this is only a
> > workaround for bad board designs and that it shouldn't be necessary in
> > the majority of cases.
> >
> > Thierry
> 
> This is common DT binding doc, I cannot add Tegra specific here.
> reset-gpios is common DT prop, so Rob asked me to add it in common file.

Ah, indeed. Alright, let's document it in the Tegra driver patch, then.

Thierry