Editing a device tree - Android Q&A, Help & Troubleshooting

Hello
This is me device tree for CM10
Code:
https://github.com/CyanogenMod/android_device_sony_jlo
Can you point me some base changes I have to make in that device tree to make it working for AOSP?
I've already compiled 3.4 kernel from sony source but I want to try make an AOSP for my device (it already has official JB 4.1.2 and 100% working CM10)

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[Q] Porting ROM

I have some quiestions about porting :
Cyanogenmod how builded together with kernel or seperated needed to be builded ?
Do i need to put another patches or someting else to stock vendor source kernel to will work cyanogenmod ?

Lenovo A880 ROM from source

Hello. I am new on building ROMs and I want try to build my first rom and kernel from source code but lenovo has not shared sources for A880.
1) How can I extract it from firmware? I found only guide for extracting device tree, but what about vendor and kernel?
2) for building kernel need just sources from mediatek and device tree, right?
3) if exists phone on MT6582 with android lollipop, is possible building lollipop for my phone while it has latest official jelly bean? Or at least KitKat?
Thanks for replies!

Need developers for MT6589.

Hi,
I'm trying to build a Cyanogenmod 12.1 ROM for MT6589 based device. We need developers who can develop a Cyanogenmod 12.1 based device tree. We have an existing Cyanogenmod 12.0 device tree, but it's having lots of bugs.
--
Here is the device tree: https://github.com/Preet23/android_device_micromax_a116/tree/cm-12.0_dev1
(It uses 3.4.5 kernel as we have already booted 5.0 ROM with this kernel)
If possible, just help me figure out what's the error.
Thanks.

How to convert CM device tree to an AOSP compatible ?

Hi everyone
I would like build an AOSP KitKat for my device (Samsung SM-G350) from the CyanogenMod 11 device tree (because device tree is already stable).
But, I can't "lunch" in the terminal because the device tree is made for CyanogenMod builder, and AOSP one isn't working.
My question is : How to port a CM device tree for an AOSP device tree ?
Files to change, remove, rename ?
I use this one (thanks to SiniTurk for their work) : https://github.com/SiniTurk/android_device_samsung_cs02/tree/cm-12.1
Thanks a lot,
Kevin.
UP please
Sent from my SM-G350 using XDA-Developers mobile app

Kernel source modification for different android versions

I have the kernel source for JellyBean 4.2.2 that boots cyanogenmod 10 and other jellybean ROMS. But when I use that kernel for Kitkat like Cyanogenmod 11 that doesn't work.
To make sure the problem is in the kernel I packed the cm11 boot.img with the jellybean kernel and it didn't boot.
So my question is what modifications does the source need for a newer android version ?
I posted it many times found no answer .

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