This bug is awaiting verification that the linux-laptop/6.5.0-1007.10
kernel in -proposed solves the problem. Please test the kernel and
update this bug with the results. If the problem is solved, change the
tag 'verification-needed-mantic-linux-laptop' to 'verification-done-
mantic-linux-laptop'. If the problem still exists, change the tag
'verification-needed-mantic-linux-laptop' to 'verification-failed-
mantic-linux-laptop'.


If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.


See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-mantic-linux-laptop-v2 
verification-needed-mantic-linux-laptop

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https://bugs.launchpad.net/bugs/2036587

Title:
  [Mediatek] mt8195-demo: enable CONFIG_MTK_IOMMU as module for
  multimedia and PCIE peripherals

Status in linux package in Ubuntu:
  Incomplete
Status in linux source package in Mantic:
  Fix Committed

Bug description:
  [SRU Justification]

  [Impact]
  IOMMU related peripherals cannot work.

  [Fix]
  CONFIG_MTK_IOMMU should be enabled as "module" in generic kernel settings. 
CONFIG_IOMMU_IO_PGTABLE_ARMV7S is also enabled due to dependency.

  [Test Case]
  build test.
  this is the first step to enable the platform on generic kernel. to fully 
enable the platform, there are some modifications still needed, so only the 
build test is performed at this stage.

  [Where problems could occur]
  to enable MTK_IOMMU as a module, IOMMU_IO_PGTABLE_ARMV7S needs to be 
built-in. the risk would be low because it's not used by default and it needs 
the driver to allocate by demand.

  [Other info]
  the purpose of this is to make ubuntu as an arm systemready ir distribution 
for mediatek platform.

  https://developer.arm.com/documentation/DUI1101/2-0/Test-SystemReady-
  IR/Test-installation-of-Linux-distributions?lang=en

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