Hi,
-----Original Message----- From: Fabian Vogt <fvogt@suse.de> Sent: 25 September 2019 07:42 To: opensuse-arm@opensuse.org Cc: Matthias Brugger <mbrugger@suse.com>; Linux Kamarada <linuxkamarada@gmail.com>; Nicolas Saenz Julienne <nsaenzjulienne@suse.com> Subject: Re: [opensuse-arm] Raspberry Pi 4 Model B
Hi,
Am Mittwoch, 25. September 2019, 13:43:44 CEST schrieb Fabian Vogt:
Hi,
Am Mittwoch, 25. September 2019, 13:16:37 CEST schrieb Matthias Brugger:
On 25/09/2019 11:57, Fabian Vogt wrote:
Hi,
Am Dienstag, 24. September 2019, 16:49:42 CEST schrieb Matthias Brugger:
Hi,
On 24/09/2019 13:24, Linux Kamarada wrote:
Hi, everyone!
AFAIK openSUSE does not support Raspberry Pi 4 Model B yet. [1]
I’ve bought that board, I know the very basics on how to use it [2] and I want to help to port openSUSE to it. How can I start?
I'm working on some (still hacky) support for RPi4. You can find the JeOS image in my home project [1]. Beware that I was able to break the build of U-Boot yesterday. I'll try to fix this tonight.
I just gave that image a try and after a while staring at a console with no activity I noticed that it's the JeOS with jeos-firstboot, so I had to remove "console=tty" to actually see anything. Using the HDMI console won't really work without USB support.
Why? HDMI output should work.
Yes, but without any ability for interaction not really useful.
Also, chrony-wait should be disabled, it delays booting by 10min as no network is currently working.
Yes, networking is on my list.
What doesn't work: - USB (expected), but the OTG port seems to be available. It's forced to host mode by the kernel though as gadget support is not enabled - WiFi: brcmfmac: brcmf_sdio_htclk: HT Avail timeout (1000000): clkctl 0x50 I see that you force-disabled WiFi stuff in JeOS.kiwi, I had to copy over the firmware manually
Does it work reliably? I heard that it has some hick-ups.
It doesn't work at all here, it fails because of the mentioned timeout.
- Ethernet: Gets detected just fine, but when actually sending packets the kernel freezes (sometimes with NETDEV WATCHDOG: eth0 (bcmgenet): transmit queue 1 timed out) - Sometimes the UART (clock?) glitches and there's garbled text
Really? Did you change anything in the config.txt? I haven't experienced this up to now.
Nope. I see it occasionally after between grub and the login prompt. I can't 100% rule out a bad connection, but as it doesn't glitch out after logging in at all I think that's unlikely.
What does work: - u-boot, grub, kernel, sd card, serial - I/O activity LED :D - cpufreq: Speed of "bc" corresponds roughly to CPU frequency
So very nice progress already!
Thanks :)
I'll try to build a kernel with dwc2 peripheral support, maybe that's enough. Probably not though, considering it's USB-C...
That's not enough. Nicolas is working on some patches to enable PCI, which is needed by USB.
For the USB-A ports, yes. Also for USB-C which is connected to the dwc2 which the kernel already initializes properly?
My kernel-default wasn't picked up by OBS yet for the last three hours :-/
Success! It works fine with a USB-C -> USB-A cable. Run:
-CONFIG_USB_DWC2_HOST=y +# CONFIG_USB_DWC2_HOST is not set -# CONFIG_USB_DWC2_DUAL_ROLE is not set +CONFIG_USB_DWC2_DUAL_ROLE=y
Could you send a patch to get this into openSUSE/SUSE kernels configs (master, stable, 15.2, etc.), please? Thanks, Guillaume
modprobe libcomposite u_ether mount none -t configfs /mnt cd /mnt/usb_gadget mkdir g1 cd g1 mkdir configs/c.1 functions/eem.usb0 ln -s functions/eem.usb0 configs/c.1/ echo fe980000.usb > UDC
Forward a network connection, then:
echo "BOOTPROTO=dhcp" > /etc/sysconfig/network/ifcfg-usb0 ifup usb0
and you can ssh onto the pi4 and download stuff.
localhost:~ # hdparm -tT /dev/mmcblk1 /dev/mmcblk1: Timing cached reads: 1632 MB in 2.00 seconds = 816.32 MB/sec HDIO_DRIVE_CMD(identify) failed: Invalid argument Timing buffered disk reads: 126 MB in 3.01 seconds = 41.90 MB/sec
I played around with some other programs and it seems like CPU performance has roughly doubled compared to a 3B+. Even over X11 forwarding applications run very smoothly.
On my wish list is now to have u-boot use the device tree from the firmware for its own initialization as well, so that hardcoding of addresses isn't necessary anymore. That way we wouldn't need a new u-boot-rpi4 flavor and new JeOS flavors installing it instead of u-boot-rpi3.
Cheers, Fabian
Cheers, Fabian
Regards, Matthias
Cheers, Fabian
Regards, Matthias
[1] https://build.opensuse.org/project/monitor/home:mbrugger:branches :RPi4
Let’s have a lot of fun! :D
[1]: https://forums.opensuse.org/showthread.php/536541-Can-Raspberry- Pi-4-run-openSUSE-LEAP-15-1/
https://www.reddit.com/r/openSUSE/comments/c6xvnr/raspberry_pi_4 /
https://www.raspberrypi.org/forums/viewtopic.php?t=244248
[2]: https://kamarada.github.io/pt/2019/09/20/primeiros-passos-no-ras pberry-pi-com-noobs-e-raspbian/ (in Brazilian Portuguese, but English translation is on the way)
Antonio The Linux Kamarada Project http://kamarada.github.io/
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