[Bug 1950633] Please test proposed package

[Łukasz Zemczak]

Hello Dave, or anyone else affected,

Accepted linux-firmware-raspi2 into focal-proposed. The package will
build now and be available at
https://launchpad.net/ubuntu/+source/linux-firmware-
raspi2/6-0ubuntu0~20.04.1 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
focal to verification-done-focal. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-focal. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

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https://bugs.launchpad.net/bugs/1950633

Title:
  [SRU] Update wifi firmware for future zero 2 boards

Status in linux-firmware-raspi package in Ubuntu:
  Fix Committed
Status in linux-firmware-raspi2 package in Ubuntu:
  New
Status in linux-firmware-raspi2 source package in Focal:
  Fix Committed
Status in linux-firmware-raspi2 source package in Impish:
  Fix Committed
Status in linux-firmware-raspi source package in Jammy:
  Fix Committed

Bug description:
  [Impact]

  Future Pi Zero 2 boards will have a slightly different wifi chip on
  board which requires a variant of the current firmware. This is being
  added to the rename of linux-firmware-raspi2 (to linux-firmware-raspi)
  for jammy, but requires adding to the existing linux-firmware-raspi2
  package for focal and impish, otherwise users on newer variants of the
  Pi Zero 2 will find themselves without any wifi connectivity (or, in
  fact, any connectivity given there is no ethernet on these boards).

  [Test Plan]

  Boards with the new wifi chip are not yet available, so the following
  test plan is the best we can do:

  * Flash a fresh SD card with the appropriate server image
  * Boot the card on the Pi under test with *no* ethernet attached (if the board supports it)
  * Edit /etc/netplan/50-cloud-init.yaml to include an appropriate wifi configuration for your local AP
  * sudo netplan apply
  * ip addr  # verify wlan0 is up and has a valid address
  * Enable -proposed and update
  * sudo apt install linux-firmware-raspi2
  * sudo reboot
  * ip addr  # verify wlan0 is up and has a valid address

  This should be performed on all supported boards with wifi (3B, 3A+,
  3B+, 4B, 400) on both supported architectures (armhf, and arm64).

  [Regression Potential]

  As we're updating the wifi firmware, the obvious possible regression
  is failure of the wifi interface (hence the testing of all supported
  boards in the plan).

  [Original Description]

  In the upstream wifi firmware package (version 1:20210315-3+rpt3 of
  the firmware-nonfree package), the following is noted in the
  changelog: "Future Zero 2 W boards will have an alternative version of
  43436 that should have different firmware, named brcmfmac43436s-sdio".
  We need to incorporate these blobs to support future variants of this
  board.

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