Repository navigation
Conversation
Document the fixed HDA backend IDs assigned by the kernel machine driver alongside the corresponding topology IDs and variables. HDA topologies hard-code the analog BE ID, while iDisp, DMIC and UAOL IDs are derived or supplied through topology variables. Recording both sides makes mismatches visible when either the machine driver or topology definitions change. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Contributor
There was a problem hiding this comment.
🟢 Approval recommended
No active review issues block the documentation-only update clarifying Intel HDA backend ID mappings and assignment.
No open issues 🎉
What changed in this PR
Documents Intel HDA backend DAI-link IDs alongside kernel definitions and topology variables, making mismatches easier to identify. This is a documentation-only change.
Changes:
- Adds ID mappings for HDMI, HDA, DMIC, Bluetooth offload, and UAOL backends.
- Clarifies that backend IDs are independent of PCM IDs and pipeline indexes, including how additional links receive consecutive IDs.
| File | Description |
|---|---|
tools/topology/topology2/README.md |
Adds the HDA backend ID reference table and explains ID assignment. |
Review effort: Balanced
PR 11445: test resultsRun date: 2026-11-11 16:02 UTC Tested commit: 0c41f2c95c3ee48c331b9356ef14831d3283d4e8
|
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Document the fixed HDA backend IDs assigned by the kernel machine driver alongside the corresponding topology IDs and variables.
HDA topologies hard-code the analog BE ID, while iDisp, DMIC and UAOL IDs are derived or supplied through topology variables. Recording both sides makes mismatches visible when either the machine driver or topology definitions change.