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PROCESSOR-SDK-AM335X: Backport of TI patches

amit nagal
Prodigy 180 points
Part Number: PROCESSOR-SDK-AM335X

Hi 

I am using Linux kernel 4.9.28 on TI AM35xx based custom board presently . 

we wish to migrate to new LTS kernel of TI . 

as per below 3 links :

http://git.ti.com/ti-linux-kernel/ti-linux-kernel/commits/linux-4.9.y 

4.9.191  is  latest linux kernel version

http://git.ti.com/ti-linux-kernel/ti-linux-kernel/commits/linux-4.14.y 

4.14.142 is latest linux kernel version

http://git.ti.com/ti-linux-kernel/ti-linux-kernel/commits/linux-4.19.y

4.19.71 is latest linux kernel version

since we are using 4.9.28 kernel version now , the closed we see is 4.9.191 to which we plan to move .

we have a question :

Are all TI SOC specific patches equally ported to all 3 LTS kernel 4.9.191 , 4.19.71 , 4.14.142 ?

Do 4.9.191 , 4.19.71 , 4.14.142 kernels have same set of TI SOC specific patches applied to them ?

if so , we can simply move to 4.9.191 which is closet to 4.9.28

Regards

Amit

  • 0
    TI__Mastermind 30526 points

    Hello,

    Our development of new features is done upstream. So, if a new feature is implemented it will done upstream and backported to the latest SDK kernel. Therefore, if a feature was added to 4.14, it would be in 4.19 but not in 4.9. So, no, it is not guaranteed that "all" patches have been backported, particularly all the way back to 4.9. Basic support should be relatively equivalent as AM335x is a mature platform that does not have a lot of active development. 

    It should be noted that only the specific tags in these trees that were released with an SDK are officially supported by TI as these are the ones that are tested and validated. We automerge the latest stable as a convenience for our customers, but these do not receive full system test.

    You can refer to release notes with each SDK to get an idea of new features and changes that might be relevant to your platform. And of course, the full git log is available for your thorough review.

    I hope this addresses your query.