Hi Kim,
On 15/07/2022 15:34, Kim Steiner wrote:
Hi Paul,
This all sounds like good news! We were building the /release/qcomlt-5.15 before and applying our patches from Inforce.
The release/qcomlt-5.15 is a generic branch targeting all the supported Qualcomm hardware. However I'm not sure if it supported 820 well. As you can see, the branch was not updated for quite some time.
Is the release/db820c/qcomlt-5.15 basically the same as this branch?
The release/db820c/qcomlt-5.15 is cleaned up branch, targeting only 820/APQ8096. Because it is based on 5.15.54, it received several patches backported from later kernel by the linux-stable team. On top of that it contains patches from the release/qcomlt-5.15 tree and additional patches targeting 820c. Later (next week) I'm going to update this branch with the patches that are being developed in the mean time (for the CBF clocks, regulators, etc).
I will try building from the branch you mentioned and applying our patches from Inforce to see if our customer board will boot.
I would suggest trying this kernel on the Dragonboard 820c first. I do not have access to IFC6601, so I can not test whether it will on your SoM and which modifications it might require. Later on I will test the kernel on the IFC6640 SBC, which hopefully is close enough to the IFC6601 SoM.
One question I have is would it be possible to get the binaries from this branch for the DragonBoard820c to do some quick temperature testing?
Could you please clarify, which binaries would you like to receive? For my own experiments I use the monolithic kernel with the initramfs containing a set of test utilities. Does that sound like what you would like to use for the tests?
Thanks,
Kim
*From:* Paul Neuhardt paul.neuhardt@linaro.org *Sent:* Friday, July 15, 2022 2:12 AM *To:* sightlineapplications@lists.linaro.org *Subject:* [Sightlineapplications] Project Status EOD Thursday, 14 July 2022
All,
Here is where we stand on the project at the end of the day on Thursday:
Progress since yesterday:
- As promised, Dmitry turned his attention to preparing a preliminary 5.15 kernel with his clock driver patches for Sightline testing. That kernel has been published on the following public branch and is ready for Sightline's initial testing:
https://git.linaro.org/landing-teams/working/qualcomm/kernel.git/log/?h=rele... https://git.linaro.org/landing-teams/working/qualcomm/kernel.git/log/?h=release/db820c/qcomlt-5.15
Dmitry notes that this kernel should be passed the kernel parameter 'maxcpus=2'.
Work in Progress:
- With the initial kernel published, work will return to the CBF/CPR patches, which when complete will be published on a separate branch.
Planned Work:
- Finish the CBF special handling in the CPR driver - Utilize CBF for CPUfreq scaling - Consider utilizing CPR driver for the GPU regulator powerup - Finalize extra corner cases in the CPR driver
- Support for Sightline as required.
Budget burn: Yesterday, Dmitry spent 1.5 hours on the project, equating to 0.2 person-days. This leaves 5.6 person-days (45.0 hours) remaining in the engineering budget. I spent .25 hours (for a running total of 3 hours including the kickoff meeting and project set-up), meaning 37% of the PM time has been consumed.
We feel we are still on-track to to deliver the expected outcomes within current budget. We are especially pleased that we have been able to deliver an initial, testable 5.15 kernel with over half of the engineering budget remaining, and we hope Sightline will be pleased with the results.
As always, if you have any questions or concerns please reach out at any time.
Kind regards, Paul
--
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*Paul Neuhardt*|/Sr. Program Manager/
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