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@xxxxxxxxxx> > >> Reviewed-by: Rob Herring <robh@xxxxxxxxxx> > >> Acked-by: Thierry Reding <treding@xxxxxxxxxx> > >> --- > >> 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
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