APPLIED Re: [PATCH 0/1][SRU][OEM-5.10] Intel e1000e blocks the system to enter PC10 on TGL platform

[Timo Aaltonen]

On 15.3.2021 8.53, AceLan Kao wrote:
> From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/1919116
> 
> [Impact]
> The deepest package cstate is PC9 and fails to enter low power mode during
> s2i on Tiger Lake platform.
> 
> [Fix]
> Intel provides a fix for TGL platform
> https://patchwork.kernel.org/project/platform-driver-x86/patch/20210305190608.1834164-1-david.e.box@linux.intel.com/
> 
> [Test]
> Verified on Dell TGL platforms and it works as expected.
> 
> [Where problem could occur]
> It actually adds a quirk for tgl platform to ignore Latency Tolerance
> Reporting (LTR) in pmc_core driver, that makes GBE on TGL won't block the
> system to enter deeper PC state. It should be safe for all TGL platforms.
> 
> [Misc]
> Currently, this commit is not accepted and a v2 is expected. So, submit
> this commit to oem kernel only and will revert it and submit final version
> of this patch to ubuntu kernels later.
> 
> David E. Box (1):
>    UBUNTU: SAUCE: platform/x86: intel_pmc: Ignore GBE LTR on Tiger Lake
>      platforms
> 
>   drivers/platform/x86/intel_pmc_core.c | 55 ++++++++++++++++++++-------
>   1 file changed, 42 insertions(+), 13 deletions(-)
> 

applied to oem-5.10, thanks

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