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@xxxxxxxxxx> > Reviewed-by: Rob Herring <robh@xxxxxxxxxx> > --- > 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@xxxxxxxxxx>
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