N950 and N9 initial ports #121
Comments
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Sweet! Have you spoken to @pavelmachek about some of the parts that you say are currently missing? He might have it working. |
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I got sound to work and then some minor details. I did get battery status, but not battery charging. I suggest N900 or Droid4 as better target machine. |
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@pavelmachek: Thanks for the info. regarding better targets, understood. I also believe those are better supported targets and more easy to get for developers. (I don't have a N9 or N950 sadly). I do think the work @dderby to make the work of himself and others available as a port is cool, so I'd be happy if he continues with that. |
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So.. I have the hardware and am to willing to help... a bit :-). But Droid 4 currently has a priority, as it is very close to be usable. My linux-n900 tree on kernel.org has patches for N9/N950, too. |
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I'm in agreement that there are better targets and to be honest I don't want to spend too much more of my time on this either. I did these ports mainly for a couple of reasons:
I'd like to now start focusing my time on other things like wiki documentation of the boot process, documentation of devices supported by mainline Linux, and maybe do a Nexus 5 port which has several advantages over existing targets. I will however review @pavelmachek's linux-n900 tree to see what we can use. |
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The N9 and N950 images are up today. I'm closing this. Please open specific tickets for further things related to these devices :) |
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Hello, friends! I have an H950 and I want to help. Can I help financially? I'm a programmer, but I've never built a kernel and modules. Now I am actively studying this topic and setting up the necessary tools. Can you explain the grave difficulties in porting the kernel? How do I guess the main problem is the closed source code of some drivers? |
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Hi @sixaxis, The available builds for the N950 include a pre-built kernel and modules. The first thing you'll want to do is make sure you can get this up and running. To do this, you'll need to install ubiboot, repartition the eMMC and unpack the .tar.gz dist to a fresh ext4 partition. Images are built using the image-builder: https://github.com/maemo-leste/image-builder I wouldn't say that there are any grave difficulties in porting the kernel. The key thing that is missing is the PowerVR kernel interface to use the hardware accelerated video closed drivers. Apart from video and GPS, all of the drivers are already available in mainline Linux and are only missing device tree entries to be able to use some of these drivers. More info here: https://elinux.org/N950 As for the general project progress, status updates are periodically posted here: https://maemo-leste.github.io/category/news.html For the latest happenings, please come and join us on IRC: chat.freenode.net, channel #maemo-leste. |
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thx!
Пятница, 4 мая 2018, 22:41 +03:00 от David Derby ***@***.***>:
@sixaxis , I've written up some details on how to configure ubiboot here .
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Reply to this email directly, view it on GitHub , or mute the thread .
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Для Писем
sixaxis@list.ru
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I'm opening this ticket to track the N950 and N9 ports and to provide initial documentation.
The following pull requests have been merged:
maemo-leste-upstream-forks/xorg-server#1
maemo-leste/hildon-meta#1
parazyd/arm-sdk#4
maemo-leste/image-builder#3
maemo-leste/image-builder#4
All testing was done on the N950. The N9 port is completely untested at this moment in time. I've taken hardware differences between the two devices into consideration and have customised the N9 port accordingly.
The port is based on linux-stable 4.16. Kernel patches come from Sebastian Reichel's (@sre) patch series "[PATCHv2 0/8] omapdrm: DSI command mode panel support" and Filip Matijević's (@filippz) patches for postmarketOS. I've created an additional patch for the N950 DT to fix the default orientation for fbcon.
I've added the patchwork client to make it easy to apply patches that have been posted to mailing lists (more info here).I've now removed pwclient in order to avoid using an additional remote dependency which would be prone to failure.The ports can be installed on the devices' eMMC and will boot with ubiboot. An initrd is not provided nor required. I have not tested the .img file, but the .tar.gz file can be unpacked to a unused slice formatted as ext4.
I'm using a preinit script to kick the watchdogs which again was based on Filip's work for postmarketOS. ubiboot will need to be configured to use
/sbin/preinit. This has a side effect in that it creates kernel messages every 2 seconds and floods the console. It may be desirable to reduce the loglevel until this is fixed.Wi-Fi is not yet working however USB networking works fine. Similar to previous Maemo versions, the USB network interface
usb0has been configured with a static IP of192.168.2.15and expects to find a gateway on192.168.2.14. You should be able to connect to it via SSH and have it route through your computer after running the following commands:The N950 X11 keyboard layout is taken from Harmattan and has been configured to work with the console as well. At some point I'd like to try and get this upstreamed.
Battery charging does not work yet.
Like the Droid 4 port, this needs Tony Lindgren's (@tmlind) patch for Xorg to be able to rotate the screen. Even with the patched Xorg, rotation in Hildon Desktop is still broken however I have tested it with other window managers and it works fine.
When the display is rotated correctly, the touchscreen works perfectly out of the box and does not appear need any calibration in userspace. The Atmel maXTouch configuration file for the N950 was dumped from my device and the one for the N9 comes from Filip's postmarketOS port.
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