Re: [PATCH 00/19] thunderbolt: Power Management improvements

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On Wed, Aug 19, 2020 at 02:58:46PM +0300, Mika Westerberg wrote:
> Hi all,
> 
> This series improves power management in the Thunderbolt driver. We already
> have a quite complete power management on systems where Firmware based
> Connection Manager is used (this is pretty much all non-Apple systems out
> there) so this series adds a couple of optimizations to make certain power
> transitions slightly faster, hopefully improving user experience.
> 
> Rest of the patches improve power management in the Software Connection
> manager side of the driver. USB4 spec covers power management for USB4
> hosts and devices, and also TBT3 compatible devices so these patches
> implement that. We also switch to use device links instead of PCI quirk to
> make sure the Thunderbolt/USB4 host controller is resumed before tunneled
> PCIe and USB 3.x ports (so that it gets the chance to restore the tunnels
> properly before). Tiger Lake systems with Software Connection Manager
> enabled describe these relationships using a new ACPI _DSD property that we
> parse in the driver and populate device links accordingly.
> 
> Mika Westerberg (17):
>   thunderbolt: Software CM only should set force power in Tiger Lake
>   thunderbolt: Use bit 31 to check if Firmware CM is running in Tiger Lake
>   thunderbolt: Do not program NFC buffers for USB4 router protocol adapters
>   thunderbolt: No need to log an error if tb_switch_lane_bonding_enable() fails
>   thunderbolt: Send reset only to first generation routers
>   thunderbolt: Tear down DP tunnels when suspending
>   thunderbolt: Initialize TMU again on resume
>   thunderbolt: Do not change default USB4 router notification timeout
>   thunderbolt: Configure link after lane bonding is enabled
>   thunderbolt: Set port configured for both ends of the link
>   thunderbolt: Configure port for XDomain
>   thunderbolt: Disable lane 1 for XDomain connection
>   thunderbolt: Enable wakes from system suspend
>   PCI / thunderbolt: Switch to use device links instead of PCI quirk
>   ACPI: Export acpi_get_first_physical_node() to modules
>   thunderbolt: Create device links from ACPI description
>   thunderbolt: Add runtime PM for Software CM
> 
> Rajmohan Mani (2):
>   thunderbolt: Optimize Force Power logic
>   thunderbolt: Optimize NHI LC mailbox command processing

All applied to thunderbolt.git/next.

@Rafael, I added your Acked-by to patches 17 and 18 as we discussed
offline.



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