APPLIED: [SRU][PULL][linux-firmware][Jammy] WCN6856 Wi-FI Unavailable and no function during suspend stress

[Juerg Haefliger]

Applied to linux-firmware jammy branch.

...Juerg


On Thu, 11 Jan 2024 23:46:25 +0800
You-Sheng Yang <vicamo.yang at canonical.com> wrote:

> BugLink: https://bugs.launchpad.net/bugs/2048977
> 
> [Impact]
> 
> Due to a known silicon limitation, the following sequence is needed while
> initialing the PCIE device on a certain devices with ASMedia chipset involved:
> 
> 1. 'hot reset' assert
> 2. 2nd PCIe reset' assert
> 3. Asmedia 'hot reset' deassert
> 4. PT21 GPIO13 2nd PCIe reset' deassert.
> 
> In certain caes, the WIFI link training failed while system resumes from
> suspend.
> 
> [Fix]
> 
> Upstream commits:
> * 17509e53b97b ("ath11k: WCN6855 hw2.0: update to WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.36")
> * 324cc56975d7 ("ath11k: WCN6855 hw2.0: update board-2.bin")
> 
> And Jammy takes an additional commit d1dc30480fef ("ath11k: WCN6855 hw2.0:
> update board-2.bin") to forfill git history dependency.
> 
> And while we pulled a firmware fix from github.com/kvalo/ath11k-firmware in
> bug 2042534, it fails to clean cherry-pick of commit 17509e53b97b. Since Noble
> has not yet accept the PR for bug 2042534, it has no such problem at this
> moment.
> 
> [Test Case]
> 
> This can be reproduced with suspend/resume stress test.
> 
> $ checkbox-cli run com.canonical.certification::stress-suspend-30-cycles-with-reboots-automated
> 
> [Where problems could occur]
> 
> Opaque firmware update. No known issue found yet after the update.
> 
> [Other Info]
> 
> This affects all series with WCN6855/WCN6856 support, Noble/Mantic/Lunar and
> Jammy for oem-6.5 included.
> 
> ----------------------------------------------------------------
> The following changes since commit 6095df14b6303c7587667e2adfb28dc3a6dcdcfb:
> 
>   UBUNTU: Ubuntu-20220329.git681281e4-0ubuntu3.24 (2023-12-15 13:54:14 +0100)
> 
> are available in the Git repository at:
> 
>   https://kernel.ubuntu.com/gitea/vicamo/linux-firmware.git bug-2048977/WCN6856-suspend-resume-wifi-lost/jammy
> 
> for you to fetch changes up to b87f23d7e6118e875c50bd5ba475b59f0815e451:
> 
>   ath11k: WCN6855 hw2.0: update to WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.36 (2024-01-11 23:08:41 +0800)
> 
> ----------------------------------------------------------------
> Kalle Valo (3):
>       ath11k: WCN6855 hw2.0: update board-2.bin
>       ath11k: WCN6855 hw2.0: update board-2.bin
>       ath11k: WCN6855 hw2.0: update to WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.36
> 
>  WHENCE                           |   2 +-
>  ath11k/WCN6855/hw2.0/amss.bin    | Bin 4980736 -> 4988928 bytes
>  ath11k/WCN6855/hw2.0/board-2.bin | Bin 6158196 -> 6308684 bytes
>  3 files changed, 1 insertion(+), 1 deletion(-)
> 

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