[Intel-wired-lan] [PATCH v1] e1000e: Add support for S0ix

[Brown, Aaron F]

> From: Intel-wired-lan [mailto:intel-wired-lan-bounces at osuosl.org] On Behalf Of
> Sasha Neftin
> Sent: Sunday, September 15, 2019 11:53 PM
> To: intel-wired-lan at lists.osuosl.org
> Cc: Rajneesh Bhardwaj <rajneesh.bhardwaj at linux.intel.com>
> Subject: [Intel-wired-lan] [PATCH v1] e1000e: Add support for S0ix
> 
> Implement flow for S0ix support. Modern SoCs support S0ix low power
> states during idle periods, which are sub-states of ACPI S0 that increase
> power saving while supporting an instant-on experience for providing
> lower latency that ACPI S0. The S0ix states shut off parts of the SoC
> when they are not in use, while still maintaning optimal performance.
> This patch add support for S0ix started from an Ice Lake platform.
> 
> Suggested-by: Rafael J. Wysocki <rafael.j.wysocki at intel.com>
> Signed-off-by: Vitaly Lifshits <vitaly.lifshits at intel.com>
> Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj at linux.intel.com>
> Signed-off-by: Sasha Neftin <sasha.neftin at intel.com>
> ---
>  drivers/net/ethernet/intel/e1000e/netdev.c | 186
> +++++++++++++++++++++++++++++
>  drivers/net/ethernet/intel/e1000e/regs.h   |   4 +
>  2 files changed, 190 insertions(+)

I do not yet have access to an Ice lake platform but this does not seem to harm any of my regression systems, so...
Tested-by: Aaron Brown <aaron.f.brown at intel.com>