** Description changed: - Need to port Intel's 5.0 kernel branch to (Disco) oem-kernel for DMIC (digital MIC) support in some OEM platforms + + To support digital mic which is directly connected to PCH, Intel recommend Dell + and us to use sound:asoc:sof driver. This driver is under upstreaming, so far, + only part of the driver is merged to ASoC's tree. + + Dell already have a couple of laptop models which connect the dmic to PCH, and + Dell pushed Intel to prepare a workable sof driver under v5.0 branch, and + pused us to integrate this driver, then the dmic can work on those laptop + models. (Lenovo also have 2 laptops which has this dmic design) + + According to Intel's estimation, the whole sof driver can't be upstreamed in a + short of period. So Intel provided a branch which contains some upstreamed + patches and some not-yet patches. + + Intel tested the provided branch, and looks the testing result is good. + PLease access https://people.canonical.com/~hwang4/sof-doc/ to get the testing + result. + + I also made a simple test after oem-d merged those patches, I didn't find + big issues too. + + There are some patches which touched the common code or the code of other + subsystems. Intel said it is safe, and I also looked at those patches, I also + think it is safe. But because there are too many changes, let us put this driver + into the OEM-D kernel, this driver will not merge to generic kernel. + + [Impact] + Our OEM project need to enable a couple of laptops which connect the dmic + directly to the PCH, there is no driver for this design in the linux kernel, + so we need to integrate Intel's sof driver. + + + [Fix] + Intel provided a sof driver tree based on v5.0, it is for oem-d kernel + + [Test Case] + Intel tested the audio functions, the testing result is good. + https://people.canonical.com/~hwang4/sof-doc/Beta%20Test%20Report%20-%20Dell%20Mantis%20(CML)%20%20-%20Apr%2030.pdf + + I also made a simple test, speaker, headphone, dmic and headset-mic + worked. + + [Regression Risk] + Low. So far both Intel side and I have not found any regression introduced by this + patchset, and to lower the risk, we only integrate the driver to oem-d kernel, + and after the image is ready, the oem project will perform the full-range test.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1826181 Title: To add DMIC support to oem-kernel To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1826181/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
