APPLIED [OEM-5.13] Re: [PATCH 0/1][SRU][I][OEM-5.13] AX201 BT will cause system could not enter S0i3

[Timo Aaltonen]

On 20.8.2021 7.13, AceLan Kao wrote:
> From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/1928047
> 
> [Impact]
> Platforms with AX201 BT fail to pass the power consumption tests
> 
> [Fix]
> Intel provides us the patch to fix it.
> https://patchwork.kernel.org/project/intel-gfx/patch/20210325120947.11950-1-anshuman.gupta@intel.com/
> 
> Wa_14010685332 sequence toggles a SDE chicken bit on and then off as the
> final step when disabling interrupts in preparation for runtime suspend.
> And this sequence also fixes the issues that dispcnlunit1_cp_xosc_clkreq
> clock keeps to be active on TGL-H during s2idle.
> 
> v2.
> 8b46cc6577f4 drm/i915: Tweaked Wa_14010685332 for all PCHs
> drm-intel/drm-intel-next
> 
> [Test]
> Verified on the Dell machines with AX201 BT on them.
> 
> [Where problems may occur]
> This patch extend the s0ix fix from gen8 and gen11 to CNP, ICP, JSP, MCC,
> TGP, and ADP PCHs, and also move the Wa_14010685332 sequence from reset
> functions to suspend/resume functions. It won't affect old chips as there
> is a if statement to check the pch type, and new chips require this
> sequence to work well.
> 
> Anshuman Gupta (1):
>    drm/i915: Tweaked Wa_14010685332 for all PCHs
> 
>   .../drm/i915/display/intel_display_power.c    | 16 +++++++-------
>   drivers/gpu/drm/i915/i915_irq.c               | 21 -------------------
>   2 files changed, 8 insertions(+), 29 deletions(-)
> 

applied to oem-5.13 though the patch was mistakenly tagged for oem-5.10

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