mako/nexus 4: switch to flo/nexus 7 kernel

Umm, while this works, I would prefer if seperate dts file is created based on nexus 7 dts and then values are verified against downstream kernel.

By Bhushan Shah on 2018-01-04T15:48:13

Created by: ollieparanoid

Great work @vetzki, I did not know that they were that similar!

But I agree with @bhush9, I think it's better to mainline the nexus 4 based on the nexus 7 dts file, and adjusting it to the board files from the downstream kernel.

@vetzki: Do you want to give it a shot? We'll be happy to help you with it in #postmarketOS and here in the GitHub issues!

PS: The goal is to use the official kernel sources from kernel.org for all devices (aports/main/linux-postmarketos-*). Right now the Nokia N900 and Qemu use these, but it's planned to bring the Android devices which are already running a very recent kernel to use these packages as well. Then we don't need to have a device specific kernel for these anymore.

By * postmarketOS Bot on 2018-01-04T16:36:17

Created by: vetzki

Do you want to give it a shot?

at least I'll try

I took the nexus7 source because I knew they're pretty similar devices (here is cm gerrit when they used the same source for both devices https://review.lineageos.org/#/q/project:LineageOS/android_kernel_google_msm+branch:cm-12.1) and thought if the 4.11.12 kernel from the nexus7 works, it'll be easier to switch to mainline then

By * postmarketOS Bot on 2018-01-07T12:32:26

Created by: montvid

@vetzki I am happy the 4.11 kernel works for you. Could you check if wifi is working fine? Is the wifi speed good, no dropped packets?

By * postmarketOS Bot on 2018-01-09T18:57:57

I also interested what works and what does not. Is there info somewhere in the wiki maybe?

By Andrey on 2018-01-22T02:06:20

Created by: ollieparanoid

@bam80: We have this wiki page, but it does not talk about trying the nexus 7 mainline kernel on the nexus 4: https://wiki.postmarketos.org/wiki/Google_Nexus_4_(lg-mako)

If you (or anyone else) want to look into mainlining the Nexus 4, we'd be happy to help you here in the GitHub issues and in the chat.

By * postmarketOS Bot on 2018-01-23T01:07:00

Created by: vetzki

sorry, I was very busy the past 2 weeks and didn't have time for anything related nexus4

wifi dont work yet. also, after short usage, ssh connection stops working

By * postmarketOS Bot on 2018-01-23T21:44:35

Any hope for call support?

By Andrey on 2018-01-23T21:46:29

Created by: ollieparanoid

This is a tricky subject, where we need to do way more research/trying ideas out. See #1054 (closed) and #598 (closed). Just in case this is not obvious, postmarketOS is far from being ready as daily driver.

By * postmarketOS Bot on 2018-01-23T23:22:06

Created by: ollieparanoid

Updated the lg-mako wiki article to reflect the current knowledge.

By * postmarketOS Bot on 2018-04-19T19:31:25

How is this venture going? Since I could not find anything this way, plus I am not skilled enough to build kernels (though that is on my roadmap), I was hoping that perhaps I could help to at least buil the .dts file.

I had already downloaded flo's .dts, and have begun to edit it, however due to my limited knowledge in this field, I was hoping that perhaps someone could point me to what information is relevent for this file (as in what are the serial details, etc.).

I have a Nexus 4 of my own, which is my daily driver, so perhaps I could help by booting (not yet flashing, I do not have another fully functional phone at the moment) whatever needs to be flashed.

By moriel5 on 2018-10-07T14:45:57

Thanks @moriel5, I can help in testing too - have spare Nexus 4

By Andrey on 2018-10-04T16:11:10

That would be great!

And about telephony, expect that to take time, as I have no idea whether anyone is working on it as of now. First the general basics have to be dealt with (battery charging, audio, etc.).

By moriel5 on 2018-10-04T17:10:52

I was in the midst of getting ready to sleep (at the end of the night), but I just had a brainstorm, since I had found the correct display model for the Nexus 4, as well as a source for the correct voltages for the backlight (this was done by checking, for the 10th time tonight, the Nexus 4 iFixit teardown guide, as well as the guide for building the UART cable and searching from there).

My father used to own a Nexus 4 (which I had recommended to him, back in the day), until he accidentally sat on the beach (in the water) with it in his pocket, and since by the time he brought it to me it was too late, I had disassembled it and kept everything, in order to research it.

My idea is, that some of the data I can find by going over the remains, disassembling anything required, and using that as a basis for some of the required modifications for the DTS.

Update: The Nexus 4 has a LH467WX-SD01, made by LG Display, as it's display panel.

The backlight controller is an LM3530, made by Texas Instruments.

By moriel5 on 2018-10-05T03:12:31

I am back, and I have found the touch controller, the S7020A by Synaptics. However, it would appear that flo's touch controller model appears differently than what it's DST shows, so perhaps it goes by an alias? flo's touch controller: The eKTH325BAWS, made by Elan, however the DTS shows "elan,ekth3500".

By that logic, could Synaptic's touch controller be something like "S7020" or "S7000"?

By moriel5 on 2018-10-05T11:56:46

mako/nexus 4: switch to flo/nexus 7 kernel

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