Re: [PATCH V4 26/28] PCI: Add DT binding for "reset-gpios" property

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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

Attachment: signature.asc
Description: PGP signature


[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]


  Powered by Linux