** Description changed:
+ [SRU Justifications]
+
+ ========== firmware-sof ==========
[Impact]
Audio doesn't work on Dell Pista/Diablo MTL platforms.
[Fix]
Kernel driver, ALSA ucm, and firmware fixes are required. For firmware-
sof, it's the upstream commit 7d2c7f5ad44d ("Add sof-v2.9 for Intel
hardware").
[Test Case]
1. Install linux-firmware with the FW files from upstream
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=57077702373e7ef40f0ca197724428d614bd92f8
2. Install alsa UCM file from upstream
https://github.com/alsa-project/alsa-ucm-conf/commit/e87dde51d68950537f92af955ad0633437cc419a
and
https://github.com/alsa-project/alsa-ucm-conf/commit/8e39917518b62cce44d098bd6fe5d2c1b41f92bd
3. Make sure the linux kernel version is later than v6.9 or has the
https://github.com/thesofproject/linux/pull/4829/commits backported
4. Go to audio setting to make sure the audio input/output device are not
dummy
[Where problems could occur]
It's simply an additional tplg file which only new kernel driver knows to how
to load.
+
+
+ ========== alsa-ucm-conf ==========
+ [Impact]
+
+ Audio doesn't work on Dell Pista/Diablo MTL platforms.
+
+ [Fix]
+
+ Kernel driver, ALSA ucm, and firmware fixes are required. For alsa-ucm-conf,
it requires the following upstream commit
+ 1. c0a4df603786 ("sof-soundwire: Use one file for speaker codec"
+ 2. 8e39917518b6 (sof-soundwire: Add basic support for basic cs35l56)
+ 3. e87dde51d689 (sof-soundwire: Add basic support for cs42l43)
+
+ [Test Case]
+ 1. Install linux-firmware with the FW files from upstream
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=57077702373e7ef40f0ca197724428d614bd92f8
+ 2. Install 6.10-oem kernel which includes
https://github.com/thesofproject/linux/pull/4829/commits
+ 3. Install new firmware-sof with new tplg file
sof-mtl-cs42l43-l0-cs35l56-l23.tplg
+ 4. Go to audio setting to make sure the audio input/output device are not
dummy
+
+ [Where problems could occur]
+ The new alsa UCM file only take effect when new cs35l56 driver and
firmware-sof are loaded. The impact are restricted on cs35l56 only.
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https://bugs.launchpad.net/bugs/2069760
Title:
Soundwire support for CS42L43 and CS35L56 on Intel MTL
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