09:30 <neochip> Hi everyone, I was hoping anyone could help me. I've been working on Exynos7420 and trying to get Mali T760 to work on linux kernel version 4.4. Can anyone shed some light, please?

09:35 <krzk> neochip: you mean vendor v4.4 or mainline v4.4?

09:36 <krzk> If the first - abandon that pure junk

09:36 <krzk> If the second, I recommend switching to some later release... kernel v4.4 was released more than 3 years ago!

09:36 <neochip> I believe we got the kernel from linaro, but it should be mainline. I got vendor specific 3.10

09:36 <krzk> there is really no point to use pure mainline/stable v4.4 for new products :)

09:37 <krzk> then move it to latest... although it will not solve necessarily your Mali problems which you did not mention here :)

09:37 <krzk> but it is anyway the right thing to do (unless it is v4.4 vendor junk :) )

09:38 <neochip> The problem is that our platform "crashes" at later releases, so things need to be done with time. First get the GPU working on 4.4, then move to later versions

09:39 <krzk> neochip: I understand, but I believe it is rather riskier approach. For long term product and for community as well, first fixing this crash and moving to v5.3 is better.

09:39 <krzk> Otherwise you will stuck with mostly working but old kernel. V4.4 is still maintained as LTS but if it is possible, I think newer should be used.

09:40 <krzk> Especially for arm64

09:41 <neochip> Ok, so you suggest going to latest kernel first, then add GPU drivers?

09:43 <neochip> I guess, it won't really solve my problem and would add extra work migrating the code we have already developed

09:44 <neochip> The main problem I'm facing is to correctly power and add the clocks to gpu driver

09:46 <krzk> Unless you are working on vendor v4.4 kernel, I would not start new work on v4.4 because there is no reason. With newer kernels you will get bugfixes and new important features related to arm64. Therefore starting work on v4.4 is already kind of flawed :). Now since you invested already time there... I guess you will not move from v4.4 to newer releases. The cost will grow bigger and bigger with every investment into v4.4.

09:47 <krzk> The GPU for Exynos5433 seems to work fine, Tizen is using it, so I would recommend taking a look there.

09:47 <neochip> with kernel 4.4 ?

09:49 <krzk> I do not remember, around three years ago they were using some v4.x (early) but I guess then they moved

09:50 <neochip> This could work, since exynos5433 uses the same GPU. Do you think he would share his repository with me?

09:50 <krzk> It is public.

09:50 <krzk> https://review.tizen.org/git/

09:51 <krzk> Or maybe some other addresses, don't know exactly.

09:52 <krzk> neochip: newer repo might be this: https://review.tizen.org/git/?p=platform/kernel/linux-exynos.git;a=summary

09:52 <krzk> older repo (not developed I see anymore): https://review.tizen.org/git/?p=platform/kernel/linux-arm64.git;a=summary

09:59 <neochip> can't clone repo