[Bug 2073282] Re: Fix power consumption while using HW accelerated video decode on AMD platforms

This bug is awaiting verification that the linux-xilinx/6.8.0-1009.10
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-noble-linux-xilinx' to 'verification-done-
noble-linux-xilinx'. If the problem still exists, change the tag
'verification-needed-noble-linux-xilinx' to 'verification-failed-noble-
linux-xilinx'.


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-noble-linux-xilinx-v2 verification-needed-noble-linux-xilinx

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https://bugs.launchpad.net/bugs/2073282

Title:
Fix power consumption while using HW accelerated video decode on AMD
platforms

Status in HWE Next:
New
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-6.11 package in Ubuntu:
Invalid
Status in linux-oem-6.8 package in Ubuntu:
Invalid
Status in linux source package in Noble:
Fix Committed
Status in linux-oem-6.11 source package in Noble:
Fix Released
Status in linux-oem-6.8 source package in Noble:
Fix Released
Status in linux source package in Oracular:
Fix Released
Status in linux-oem-6.11 source package in Oracular:
Invalid
Status in linux-oem-6.8 source package in Oracular:
Invalid

Bug description:
[SRU Justification]

[Impact]

Power consumption measurements are worse than Windows while using HW
accelerated video decoding.

[Fix]

Two commits from upstream v6.11-rc1 to add a unified queue to VCN for
more power saving.

[Test Case]

This involves attaching probes on mainboard and can only be performed
by AMD/ODM.

[Where problems could occur]

No.

[Other Info]

To apply to all kernels >= 6.8. Orauclar/Noble, OEM-6.8, OEM-6.11 are
nominated for fix.

===== original bug report =====

Affected platforms are AMD Phoenix, Phoenix2, Kracken, Strix and
Strix-Halo.

Patches being upstreamed:
* https://lore.kernel.org/all/20240710205907.190580-1-boyuan.zhang@amd.com/
* https://lore.kernel.org/all/20240710205907.190580-2-boyuan.zhang@amd.com/

Patches backported to 6.8/6.10:
* https://git.kernel.org/superm1/h/superm1/vcn-dpg-6.8
* https://git.kernel.org/superm1/h/superm1/vcn-dpg-6.10

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