On Fri, May 17, 2019 at 06:08:39PM +0530, Vidya Sagar wrote:
> Some host controllers need to know the existence of clkreq signal routing to
> downstream devices to be able to advertise low power features like ASPM L1
> substates. Without clkreq signal routing being present, enabling ASPM L1 sub
> states might lead to downstream devices falling off the bus. Hence a new device
> tree property 'supports-clkreq' is added to make such host controllers
> aware of clkreq signal routing to downstream devices.
> 
> Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
> Reviewed-by: Rob Herring <robh@kernel.org>
> ---
> Changes since [v6]:
> * None
> 
> Changes since [v5]:
> * s/Documentation\/devicetree/dt-bindings/ in the subject
> 
> Changes since [v4]:
> * None
> 
> Changes since [v3]:
> * Rebased on top of linux-next top of the tree
> 
> Changes since [v2]:
> * None
> 
> Changes since [v1]:
> * This is a new patch in v2 series
> 
>  Documentation/devicetree/bindings/pci/pci.txt | 5 +++++
>  1 file changed, 5 insertions(+)

Reviewed-by: Thierry Reding <treding@nvidia.com>