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Allwinner R40 -- some already available information


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Posted

R40 is a new SoC from Allwinner known as 'quad-core A20 successor' (link to datasheet). It shares most hardware details with A20 (true SATA, GbE -- EMAC and GMAC listed separately -- 2 USB2.0 host ports, one USB OTG, and fortunately also PMIC/battery support (link to AXP221s datasheet).

 

Unfortunately Allwinner chose a manufacturing partner known for never providing exact specs/info to produce the first R40 device available. So we won't get any info about performance and working hardware features unless we buy this device on our own and test.

 

I just had a quick look into one already released OS image 'funnily' based on one of our Armbian OS images for a H3 board:

 

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BSP kernel version is 3.10.65 (just like with Pine64 a year ago):

uImage: u-boot legacy uImage, Linux-3.10.65-BPI-M2U-Kernel, Linux/ARM, OS Kernel Image (Not compressed), 6673480 bytes, Sun Sep 25 13:09:02 2016, Load Address: 0x40008000, Entry Point: 0x40008000, Header CRC: 0x1258CB35, Data CRC: 0xB92252E8

U-boot version is also the same (2014.07), an initrd and uEnvt.txt will be used (same way to specify display resolutions, HDMI is still 3, mode 10 is still 1080p and so on):

 

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R40 is sun8iw11p1 in Allwinner speech (formerly known as A20E and now also known as T3 -- see this entry in 'Android device database') and it seems it's not only meant to work together with AXP22x but still AXP209 (based on initrd piped through strings)

 

The OS image also contains a binary /usr/local/bin/tinacameratest (Allwinner has some ambitions to produce an Open Source Linux OS called Tina for R40 -- strings output for the binary can be found here). In case anyone wants to dig around himself the more important stuff in blob format can also be found there.

Posted

BTW: @sinovoip is busy producing OS images for BPi M2 Ultra as usual. It's quite interesting that they emphasize on tinacameratest capabilities:

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support camera (tinacameratest app support photo / video H.264 hw encode)

 

So there's some hope that Allwinner will release working HW accelerated video encoding code for R40 (hopefully re-usable for the other SoCs too)

Posted

BTW: TinaOS (Allwinner's 'Open Source Linux distro for the Internet of Things') seems to be available at https://github.com/tinalinux (currently only containing code for R16 which is obviously the same SoC as A33 -- compare with Olimex' github ressources for their new board). They really call the combination of an outdated u-boot 2011.09 with a smelly 3.4.39 kernel and a weird mixture of ancient OpenWRT and Android code/tools 'TinaOS' :)

 

Maybe soon here kernel 3.10.65 for R40 will appear to just have a look into.

Posted

I checked code quickly and while it is true, that it has mostly uninterested things, it contains some interested bits. Newest 3.4.39 BSP kernel, which could also be compiled for H3. I will make a diff to see if there is anything important, but I guess not. Other interested thing is different mali framebuffer driver. Instead UMP it is using dmabuf. Probably it is not interesting for Armbian, becuase it doesn't support X11. I guess that now it can be officially added to linux-sunxi collection of userspace mali drivers.

Posted

Great news! R40 does not contain a self-destruction feature that destroys the SoC after 3 weeks: http://forum.banana-pi.org/t/bpi-m2-ultra-test-it-running-22-days-with-ubuntu-16-04-1-lts/2351

 

(is it really newsworthy that Linux on a device has an uptime of more than 3 weeks? Or does it tell something about @sinovoip's expectations? We've several Armbian installations with +200 days uptime that are only due to kernel updates and the necessary reboots)

 

Any real information missing as expected (how hot gets the SoC for example when idle or when running cpuburn-a7, why is average load that high? Is it just @sinovoip forgetting USB OTG settings as with every other device they released so far so that it takes community to complain maybe 20 times until @sinovoip fixes stuff like this months later?). Unfortunately it still applies what I wrote above:

 

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we won't get any info about performance and working hardware features unless we buy this device on our own and test.

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