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by swahren
Fri Jan 31, 2020 8:05 pm
Forum: Linux Kernel
Topic: Interrupt differences between 32-bit and 64-bit kernels
Replies: 4
Views: 8423

Re: Interrupt differences between 32-bit and 64-bit kernels

As you noticed the smp_affinity isn't implemented yet. Is the smp_affinity ever going to be implemented? It is an important feature to achieve performance in case of IRQ-hungry peripherals... Nobody asked for this before as a necessary feature. There are only few kernel developer working on upstrea...
by swahren
Wed Jan 22, 2020 8:37 pm
Forum: Linux Kernel
Topic: Status of Raspberry Pi 4 in Mainline
Replies: 9
Views: 6736

Re: Status of Raspberry Pi 4 in Mainline

Gavinmc42 wrote:
Wed Jan 22, 2020 12:33 am
Nice, thanks for the update.
So it is looking like 5.6 will be the cross over point for Pi4 on mainstream?
Anything missing?
The whole graphics stuff (VC4, V3D), DMA engine and VCHIQ. I think they are more time consuming.
by swahren
Tue Jan 21, 2020 7:40 pm
Forum: Linux Kernel
Topic: Status of Raspberry Pi 4 in Mainline
Replies: 9
Views: 6736

Re: Status of Raspberry Pi 4 in Mainline

Linux 5.5 is almost ready, so a short update for the upcoming features in Mainline Linux 5.6:
- hwrng: iproc-rng200 - Add support for BCM2711
- thermal: Add BCM2711 thermal driver
- PCI: brcmstb: Add Broadcom STB PCIe host controller driver
by swahren
Sat Dec 07, 2019 12:37 pm
Forum: Advanced users
Topic: Moving Linux kernel to 4.19 [Already moved for many months now (in january 2020)]
Replies: 283
Views: 99729

Re: Moving Linux kernel to 4.19

AFAIK Ubuntu and Gentoo doesn't use the mainline kernel. They still use the RPi vendor kernel or a fork. The distributions i'm aware of that use the mainline kernel are Arch (arm64 variant), Debian, OpenSuSE and Fedora. The chances are good that Linux 5.5 will gain GENET support (Ethernet) for RPi4....
by swahren
Sat Dec 07, 2019 10:48 am
Forum: Advanced users
Topic: Moving Linux kernel to 4.19 [Already moved for many months now (in january 2020)]
Replies: 283
Views: 99729

Re: Moving Linux kernel to 4.19

Wondering why 4.19 is till been worked on? Because all the end user RPi kernel bases on the last LTS release, which is reliable. That post looks like 5.5 for Pi4's will be very mainstream. Should there be a new post "Moving to kernel 5.5"? The Mainline 5.5 has only very little Pi4 support from a us...
by swahren
Sat Dec 07, 2019 9:36 am
Forum: Advanced users
Topic: Moving Linux kernel to 4.19 [Already moved for many months now (in january 2020)]
Replies: 283
Views: 99729

Re: Moving Linux kernel to 4.19

I'd surmise that the 5.3 kernel is just not mature enough yet. Probably won't be playing nice until at least 5.3.25 I would guess. Same for 5.4. Linux 5.3 is matured enough, the problem is to port all the downstream changes without breaking things. Ahem...https://www.phoronix.com/scan.php?page=news...
by swahren
Sun Nov 24, 2019 1:36 pm
Forum: Linux Kernel
Topic: Status of Raspberry Pi 4 in Mainline
Replies: 9
Views: 6736

Re: Status of Raspberry Pi 4 in Mainline

I would have thought arm64 is the preferred mainline kernel. Optimizing for Aarch64 would give a better future and minimize the support required. From kernel perspective there is no preference. Both must work, but the BCM2711 / PCIe stuff needs some extra work for arm64. Nicolas Saenz Julienne take...
by swahren
Sat Nov 16, 2019 10:41 am
Forum: Linux Kernel
Topic: Status of Raspberry Pi 4 in Mainline
Replies: 9
Views: 6736

Re: Status of Raspberry Pi 4 in Mainline

This week the GENET support has been applied to net-next:
https://lore.kernel.org/netdev/15735017 ... t@gmx.net/
by swahren
Sat Nov 09, 2019 7:09 pm
Forum: Deutsch
Topic: Hilfe! :-( WIN10 SSH Zugriff funktioniert nicht
Replies: 9
Views: 603

Re: Hilfe! :-( WIN10 SSH Zugriff funktioniert nicht

Ansonsten darfst Du nach dem Abspeichern der ssh-Datei auf keinen Fall einfach den Power-Stecker zum Neustart ziehen. Besser einen Neustart via reboot-Kommando auslösen.
by swahren
Fri Nov 08, 2019 5:56 pm
Forum: Deutsch
Topic: Image von MicoSD auf USB Stick / Backup
Replies: 9
Views: 583

Re: Image von MicoSD auf USB Stick / Backup

Ich habe auf der MicroSD eine Smarthome-Installation (sollte aber egal sein). Nachdem ich jetzt gelesen habe, dass durch das häufige Schreiben (es läuft unter anderem eine MySQL Datenbank) ein USB-Stick einer SD Karte vorzuziehen ist. Mit welcher Begründung sollte das besser sein? Ob jetzt die SD-C...
by swahren
Thu Nov 07, 2019 7:50 pm
Forum: Deutsch
Topic: Image von MicoSD auf USB Stick / Backup
Replies: 9
Views: 583

Re: Image von MicoSD auf USB Stick / Backup

Ich habe auf der MicroSD eine Smarthome-Installation (sollte aber egal sein). Nachdem ich jetzt gelesen habe, dass durch das häufige Schreiben (es läuft unter anderem eine MySQL Datenbank) ein USB-Stick einer SD Karte vorzuziehen ist. Mit welcher Begründung sollte das besser sein? Ob jetzt die SD-C...
by swahren
Fri Nov 01, 2019 6:24 pm
Forum: Linux Kernel
Topic: Boot hang after "random: crng init done"
Replies: 18
Views: 52734

Re: Boot hang after "random: crng init done"

The kernel output "random: crng init done" isn't an issue. It's only the information that the random number generator is initialized, which happend usually happend very late at boot process. In the most described cases the rootfs won't get mounted, but this is hard to say because of the lack of real...
by swahren
Thu Oct 31, 2019 12:49 pm
Forum: Deutsch
Topic: Informationsaustausch zwischen 2 RasPis
Replies: 5
Views: 795

Re: Informationsaustausch zwischen 2 RasPis

Ein alternativer Ansatz wäre MQTT als Zwischenschicht zu verwenden. Der Broker (z.B. Mosquitto) könnte dann auf dem Pi laufen auf dem auch rddtool läuft.
by swahren
Mon Oct 21, 2019 6:29 pm
Forum: Raspbian
Topic: Rpi4 hung tasks
Replies: 8
Views: 1223

Re: Rpi4 hung tasks

Hi to all, I found hung tasks that not permit to shut down the rpi4 and sometiems I can't reboot too. tmpfs was checked and is not full. and the SD card passed a test and an fsck. and the load is stuck at 4.0 or higher: top - 00:46:07 up 1:24, 3 users, load average: 4.01, 4.10, 4.08: [ 243.674357] ...
by swahren
Fri Oct 11, 2019 11:17 pm
Forum: Linux Kernel
Topic: Status of Raspberry Pi 4 in Mainline
Replies: 9
Views: 6736

Re: Status of Raspberry Pi 4 in Mainline

Today i applied the initial Raspberry Pi 4 device tree:
https://marc.info/?l=linux-arm-kernel&m ... 825574&w=2
by swahren
Wed Oct 09, 2019 6:50 pm
Forum: Linux Kernel
Topic: How to upstream patches so that they get included downstream
Replies: 2
Views: 1640

Re: How to upstream patches so that they get included downstream

Yes, this is correct. But your patch will only be backported to 4.19 if it applies to these rules.
by swahren
Mon Oct 07, 2019 8:02 pm
Forum: Advanced users
Topic: Pi4 64-bit raspbian kernel for testing - Focus on Pi4
Replies: 299
Views: 82756

Re: Pi4 64-bit raspbian kernel for testing - Focus on Pi4

Feeling guilty for this. My recent pull request backported the upstream driver changes from 5.4 into 4.19. This also introduced the accepted upstream compatibles for clock and pinctrl which doesn't work with the pre 4.19.75 device tree. A possible workaround would be to add the old compatibles to th...
by swahren
Wed Oct 02, 2019 10:07 pm
Forum: Advanced users
Topic: Moving Linux kernel to 4.19 [Already moved for many months now (in january 2020)]
Replies: 283
Views: 99729

Re: Moving Linux kernel to 4.19

kozman wrote:
Mon Sep 30, 2019 12:06 pm
I'd surmise that the 5.3 kernel is just not mature enough yet. Probably won't be playing nice until at least 5.3.25 I would guess. Same for 5.4.
Linux 5.3 is matured enough, the problem is to port all the downstream changes without breaking things.
by swahren
Sun Sep 29, 2019 10:06 am
Forum: Deutsch
Topic: Erste Fassung des 64-Bit-Kernels verfügbar
Replies: 8
Views: 2006

Re: Erste Fassung des 64-Bit-Kernels verfügbar

Ich kann ehrlich gesagt, nicht den Wirbel um die "64bit-Version" verstehen. Den Support gibt es doch schon länger und Distributionen wie Arch, Fedora oder OpenSuSE nutzen das auch fließig.
by swahren
Sun Sep 08, 2019 4:35 pm
Forum: Compute Module
Topic: SPI2 set clock divider with iotcl
Replies: 4
Views: 429

Re: SPI2 set clock divider with iotcl

Why you don't use a fbtft driver for the ili9225?
by swahren
Thu Aug 29, 2019 7:05 pm
Forum: Linux Kernel
Topic: Status of Raspberry Pi 4 in Mainline
Replies: 9
Views: 6736

Re: Status of Raspberry Pi 4 in Mainline

Today the relevant I2C changes has been applied to for-next:
https://marc.info/?l=linux-i2c&m=156692552019278
by swahren
Tue Aug 27, 2019 8:45 pm
Forum: Deutsch
Topic: Sensordaten parallel abfragen
Replies: 11
Views: 1264

Re: Sensordaten parallel abfragen

Das geschilderte Problem hat eigentlich nichts mit dem Raspberry Pi zu tun, deshalb solltest Du besser in ein Linux/Programmierer-Forum schauen. Damit jemand Dir dort helfen kann solltest Du folgende Fragen beantworten (können): Welche Programmiersprache verwendest Du? Welche Schnittstelle aus Linux...
by swahren
Fri Aug 23, 2019 3:52 pm
Forum: Deutsch
Topic: PI4 don' start from ODroid SD EMMC Adapter [gelöst]
Replies: 11
Views: 1951

Re: PI4 don' start from ODroid SD EMMC Adapter

Wie es aussieht hat jemand das Problem schon näher analysiert:
https://github.com/raspberrypi/linux/issues/3178
by swahren
Thu Aug 22, 2019 6:33 pm
Forum: Linux Kernel
Topic: Status of Raspberry Pi 4 in Mainline
Replies: 9
Views: 6736

Status of Raspberry Pi 4 in Mainline

For those how are interested, Nicolas Saenz Julienne and i working on Mainline support for the Raspberry Pi 4. The plan was to introduce initial Raspberry Pi 4 support (only debug UART, no fancy stuff like GENET, V3D, USB 3.0 or arm64) for Linux 5.4. Unfortunately there were a lot of issues (especia...
by swahren
Sun Aug 18, 2019 3:15 pm
Forum: Deutsch
Topic: Pi mit Rasp 9 oder 10 Netzwerkprobleme, Rasp 8 OK
Replies: 13
Views: 2612

Re: Pi mit Rasp 9 oder 10 Netzwerkprobleme, Rasp 8 OK

D.h. das Problem / Crash ist relativ einfach nach Zeit x reproduzierbar? Wie schnell?

Edit: Hast Du schon mal die Systemlast mit den anderen RPi verglichen?

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