Re: [PATCH 2/2] PCI: Disable Precision Time Measurement during suspend

2020-11-19 Thread David E. Box
On Thu, 2020-11-19 at 19:13 +0100, Rafael J. Wysocki wrote: > On Thu, Nov 19, 2020 at 6:45 PM David E. Box > wrote: > > On Thu, 2020-11-19 at 13:01 +0100, Rafael J. Wysocki wrote: > > > On Thu, Nov 19, 2020 at 1:17 AM David E. Box > > > wrote: ... > > > > > > > > +*/ > > > > + if

Re: [PATCH 2/2] PCI: Disable Precision Time Measurement during suspend

2020-11-19 Thread Rafael J. Wysocki
On Thu, Nov 19, 2020 at 6:45 PM David E. Box wrote: > > On Thu, 2020-11-19 at 13:01 +0100, Rafael J. Wysocki wrote: > > On Thu, Nov 19, 2020 at 1:17 AM David E. Box > > wrote: > > > On Intel client platforms that support suspend-to-idle, like Ice > > > Lake, > > > root ports that have Precision T

Re: [PATCH 2/2] PCI: Disable Precision Time Measurement during suspend

2020-11-19 Thread David E. Box
On Thu, 2020-11-19 at 13:01 +0100, Rafael J. Wysocki wrote: > On Thu, Nov 19, 2020 at 1:17 AM David E. Box > wrote: > > On Intel client platforms that support suspend-to-idle, like Ice > > Lake, > > root ports that have Precision Time Management (PTM) enabled can > > prevent > > the port from bein

Re: [PATCH 2/2] PCI: Disable Precision Time Measurement during suspend

2020-11-19 Thread Rafael J. Wysocki
On Thu, Nov 19, 2020 at 1:17 AM David E. Box wrote: > > On Intel client platforms that support suspend-to-idle, like Ice Lake, > root ports that have Precision Time Management (PTM) enabled can prevent > the port from being fully power gated, causing higher power consumption > while suspended. To

[PATCH 2/2] PCI: Disable Precision Time Measurement during suspend

2020-11-18 Thread David E. Box
On Intel client platforms that support suspend-to-idle, like Ice Lake, root ports that have Precision Time Management (PTM) enabled can prevent the port from being fully power gated, causing higher power consumption while suspended. To prevent this, after saving the PTM control register, disable t