Posts by kert

kert · Still supported 32-bit chipset options ? kert May 8, 2020 at 3:54 AM

Oh, thanks a lot, this helps me forward a ton. Weekend coming up, I'll mess with it and report back what i can get to work.

Just out of interest, is having amlogic upstream u-boot support a lost cause ? allwinner seems to be doing this real nicely. I've got A20, H3 and H5 boards here all booting with really recent u-boot code.

kert · Still supported 32-bit chipset options ? kert May 6, 2020 at 11:21 PM

Yes i know of course. I just figured it's a good starting point, i more or less learned how to use the LE build system effectively without rebuilding the world every time, make quick custom branches for kernels, and get reproducible fast full builds with Docker running on Amazon / Fargate.

I'm referencing old LE branches, H3 device definition and Armbian build trees to try and pull C1 definition together. It's coming along, but slowly, as i have only a bit of time to tinker with it.

Oh, and i should probably configure things for tftpboot rather than switching sdcards out, hardkernel has pretty good support for it.

kert · Still supported 32-bit chipset options ? kert May 6, 2020 at 5:41 AM

FWIW, did get the lights on ODROID-C2. Otherwise stock master build with DEVICE=AMLGX UBOOT_SYSTEM=odroid-c2, but removed all pre-existing kernel patches and reset to meson-mx-integration-5.8-20200503 from GitHub - xdarklight/linux: Various Linux kernel changes - Amlogic Meson (32-bit and 64-bit) SoCs, lantiq SoCs, ath9k, etc.. - see branch list.

Had to limit SSD speed to get it to boot, otherwise was getting errors like these

Running bBuild info:

Code

LibreELEC:/ # uname -a
Linux LibreELEC 5.7.0-rc4 #1 SMP Tue May 5 15:35:51 UTC 2020 aarch64 GNU/Linux
LibreELEC:/ # head -n 8 /storage/.kodi/temp/kodi.log 2020-03-06 12:38:59.531 T:691      INFO <general>: -----------------------------------------------------------------------
2020-03-06 12:38:59.531 T:691      INFO <general>: Starting Kodi (19.0-ALPHA1 Git:392dcf7331e06afda77d957d12664d3e1dc6c714). Platform: Linux ARM 32-bit
2020-03-06 12:38:59.531 T:691      INFO <general>: Using Release Kodi x32 build
2020-03-06 12:38:59.531 T:691      INFO <general>: Kodi compiled 2020-05-05 by GCC 9.3.0 for Linux ARM 32-bit version 5.6.0 (329216)
2020-03-06 12:38:59.531 T:691      INFO <general>: Running on Amlogic Meson GXBB (S905) Hardkernel ODROID-C2 with LibreELEC (community): devel-20200506031328-8ddef2d 9.80, kernel: Linux ARM 64-bit version 5.7.0-rc4
2020-03-06 12:38:59.531 T:691      INFO <general>: FFmpeg version/source: 4.2.2-Kodi
2020-03-06 12:38:59.531 T:691      INFO <general>: 4 CPU cores available
2020-03-06 12:38:59.531 T:691      INFO <general>: ARM Features: Neon enabled
LibreELEC:/ # lsmod
Module                  Size  Used by
fuse                  143360  3
uas                    32768  0
8021q                  40960  0
rfkill                 40960  1
meson_vdec             81920  1
videobuf2_dma_contig    24576  41 meson_vdec
videobuf2_memops       20480  1 videobuf2_dma_contig
v4l2_mem2mem           49152  1 meson_vdec
governor_simpleondemand    16384  0
videobuf2_v4l2         36864  2 meson_vdec,v4l2_mem2mem
videobuf2_common       57344  3 meson_vdec,videobuf2_v4l2,v4l2_mem2mem
lima                   61440  1
ir_nec_decoder         20480  0
rc_odroid              16384  0
gpu_sched              36864  1 lima
meson_ir               20480  0
ao_cec                 20480  1

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Plays a little bit of video, something funny going on with HDMI timing as well, image is a bit jumpy.

Will try the same with C1

kert · Still supported 32-bit chipset options ? kert May 1, 2020 at 10:25 PM

Any pointers to where to look ?
For Armbian on C1, i had to mess with uboot env a bit too, convert zImage->uImage, given it's ancient uboot fork, and a few other bits and pieces, as listed in this thread here Armbian (EOS) - Make it boot - ODROID

I have a weekend of hacking time ahead, if i get the lights on, i'd probably push a branch somewhere

kert · Still supported 32-bit chipset options ? kert April 30, 2020 at 9:02 PM

Thanks for that thread. I'll definitely try and see if i can get my odroid-c1 lights on with the patch series from here GitHub - xdarklight/linux at meson-mx-integration-5.8-20200428

The Ethernet perf fix looks especially encouraging: LKML: Martin Blumenstingl: [PATCH RFC v2 00/11] dwmac-meson8b Ethernet RX delay configuration

kert · Still supported 32-bit chipset options ? kert April 29, 2020 at 8:37 AM

I've actually got a stack of various boards, various variants of S9xx and S805, RK3288s included, and a bunch of Raspberrys, 2, 3 and 4 as well. I'm not looking to watch movies in this instance ( although i do watch a lot of movies ), I'm looking for slowest possible 32-bit chipset with hardware video playback support, to basically use as a stress test target for some custom software.

I've been able to get Tinkerboard / RK3288 running with 5.7-rc kernels with latest Panfrost and Mesa 20, but video playback seems relatively broken still. I've got Odroid-c1 for S805 testing, have gotten it somewhat running with trunk kernels, but it's still quite unstable, and it doesn't look like it's seeing much activity anymore for testing or development.

kert · Still supported 32-bit chipset options ? kert April 29, 2020 at 4:50 AM

The question in the title. It looks like for RK3288, Allwinner A20/H3 are really the only options, outside of iMX6 price levels and Raspi-2 ?
S805 seems like a bit rough still ?

I'm basically trying to find a lowest performance device out there that can still somewhat run on something relatively close to mainline, with moderate hacking as needed.