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<oliv3r>
got a VERY positive mail from EVA! they will share the A23 user manual with the community
<oliv3r>
and stuff will be requested by UPPER management, so lets see how that goes
<oliv3r>
IMG they still use as it is more powerfull then mali (mali 400 sure)
<oliv3r>
and they 'hope' powervr become more OS friendly (right)
<oliv3r>
mripard: yeah If time permits, as am I; u-boot is 'small' enough to comprehend
<oliv3r>
i've got a few fixes/patches that i'm working on; but ... time, time time time
<oliv3r>
but lets hope I can get sunxi used here at my new job soon
<oliv3r>
that means more support :D
<ccaione>
oliv3r: hoo got new job?
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<plaes>
what's EVA?
<plaes>
s/what/who/ ? :)
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<libv>
good news on the docs
<libv>
bad news on the gpu
<rz2k>
plaes: AW's community manager and the girl speaking on all exhibitions and etc. You can hear her talks @ Charbax's arm-devices YouTube blog when he visits various chinese exhibitions.
<plaes>
thanks :)
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<atiti>
hehe I've met EVA at CES
<atiti>
very friendly
<plaes>
wens: did you see that TI pushed their SoC code to stmmac
<plaes>
nice work you did \o/
<oliv3r>
libv: well she did reveal, that she's not allowed to reveal yet, about new MALI based SoC
<oliv3r>
which we kinda new
<oliv3r>
libv: look at it this way, their high-end cores will be IMG (for now, until samsung shows them that the newer mali's kick ass)
<oliv3r>
but the mid-low end range, what's most interesting to us anyway, will likly remain to be mali :)
<wens>
plaes: yeah they did it faster than STi :p
<wens>
oliv3r: did you ask for A80 optimus board?
<oliv3r>
yeah said we'd be intrested as a community
<oliv3r>
but she shouldn't have high hopes for support :p
<oliv3r>
and yes, starting March 1st, i should officially be working for ultimaker.com
<oliv3r>
:)
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<ccaione>
oliv3r: gratz!! it looks cool :)
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<oliv3r>
yeah
<oliv3r>
young company, awesome engineers
<oliv3r>
and ... 3D printing!
<oliv3r>
what is not cool about that
<oliv3r>
means that i'll have very little sunxi time; as hoemtime wil be spent writing the book :p
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<CaptHindsight>
if you avoid places like reprap and visit linuxncnc, machine design, cnczone, practical machinist etc you'll learn more about machines
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<gzamboni>
once i will finish my actual project i was wondering if its a good idea to try to do an open pick and place machine, first with those makerbeams monts
<CaptHindsight>
gzamboni: have you seen the other open pick-n-place projects?
<CaptHindsight>
makerbeam is a flimsy extrusion
<gzamboni>
not yet, i saw some of them, but they are for big things, not for micro electronics to do pcbs
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<CaptHindsight>
there a couple just for smt electronics
<Turl>
oliv3r: they offered us optimus boards? when? :p
<CaptHindsight>
you might want to make a better version for DIY than the seeme
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<oliv3r>
Turl: they asked if we wanted some :p
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<Turl>
oliv3r: when? I must've missed it :p
<wens>
will they provide SDKs with it? :p
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<Turl>
wens: +1 :p
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<plaes>
haha
<plaes>
batteries not included
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<gzamboni>
let me check here CaptHindsight , thnanks
<gzamboni>
CaptHindsight, it seems to be much more complicated to control tho
<Montjoie>
hello, can I control a fan with GPIO on a cubieboard ?
<mripard>
Montjoie: usually, a PWM is more fit for that
<gzamboni>
sup mripard, are you continuing the dma stuff ? i didnt have time yet to continue with the sun4i
<mripard>
gzamboni: yeah, I'm still working on it
<mripard>
I'm stuck with mem2dev transfers though...
<Montjoie>
mripard, does cubieboard2 have a PWM, by GPIO I meant the external output pin
<gzamboni>
Do you plan to unify the A10/A20 inside the same driver ?
<gzamboni>
i saw you posted they have some similarities at the sunxi wiki
<gzamboni>
Montjoie, cant you do pwm using a regular gpio by software ?
<gzamboni>
i never used pwm on linux
<mripard>
Montjoie: the PWM are exported on a few pins, I don't know wether they are usable or not on the cubie2
<mripard>
gzamboni: unify what?
<Turl>
I don't think a gpio would provide enough current to run a fan
<CaptHindsight>
gzamboni: linuxcnc has kinematics for delta robots
<gzamboni>
do you think we will be able to use the same driver to A31,A23,A10 and A20 ?
<mripard>
gzamboni: for the DMA ? nope
<mripard>
A31 is pretty different
<mripard>
A23 has the same controller though
<mripard>
but sun4i, sun5i, and sun7i should be able to have a common driver too
<wens>
what's the difference between normal and dedicated DMA in A10/A20?
<CaptHindsight>
Montjoie: depends on how the fan is connected to the cubie, the IO pins themselves don't drive much current if that what you mean
<gzamboni>
CaptHindsight, never used linuxcnc, i read it some time ago, seems to be a good software
<Montjoie>
I just see a sunxi-pwm driver, it seems to use the lcd output
<mripard>
wens: as far as i understood, only one channel can be active at a time
<wens>
Montjoie: there's a PWM controller, with PWM outputs muxed on some pins
<mripard>
with dedicated DMA, you have all the 8 channels that are usable in parallel
<mripard>
Montjoie: a very common use for PWM are backlights :)
<wens>
mripard: so 8 channel dedicated DMA capable of dev2dev would be quite complicated hardware-wise
<CaptHindsight>
gzamboni: we are using an FPGA with the A20 to control all types of cnc machines
<gzamboni>
:) nice, i never played with FPGA, my brother is working with a project using a xilinx
<CaptHindsight>
I'm surprised that there isn't a A20+FPGA board already. I'm tempted to float a deign around China
<CaptHindsight>
gzamboni: linuxcnc controls it all
<CaptHindsight>
deign/design
<gzamboni>
i would buy one :)
<mripard>
wens: yep, but the A31 has 16 channels, and only in "dedicated" mode
<mripard>
so it seems doable :)
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<gzamboni>
CaptHindsight, is it a project you're on for a company ? are you selling out this cnc controller ?
<CaptHindsight>
gzamboni: Linuxcnc + cubie + an FPGA expansion board, Mesa Electronics might sell the fpga board
<CaptHindsight>
they make several already, in fact you could use any allwinner board with ethernet and use that to connect to an fpga for RT machine control
<gzamboni>
whats the programming language for FPGAs ?
<CaptHindsight>
you can find them on ebay and craigs for a few $K
<CaptHindsight>
they usually just need a new controller
<CaptHindsight>
a cnc machine builder doesn't care so much about allwinner + linuxcnc, but small appliances like 3d printers, routers and mills can benefit from lower BOM cost and smaller size
<gzamboni>
what is the motor control thing there is in the AW datasheet ?
<gzamboni>
its the pwm ?
<CaptHindsight>
what section of the manual?
<gzamboni>
let me check
<CaptHindsight>
the A20?
<gzamboni>
A10 and A20
<gzamboni>
i remember seeing it somewhere
<CaptHindsight>
there is PWM but I'm wondering what you found
<gzamboni>
i cant find it anymore, but i remember i did see something about in a drawing or something, but it should be like the GPS and other things they say they have but without any drivers.
<CaptHindsight>
yeah, might be hidden in there
<CaptHindsight>
if we knew where they get their ip blocks it wouldn't hurt
<CaptHindsight>
gzamboni: if you find it, please post it
<CaptHindsight>
maybe we can turn it on
<gzamboni>
i can't even find anymore where i did see it
<CaptHindsight>
mrnuke: is coreboot for A20 in the works? Thanks for the A10 port!
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<memleak>
dvfs_table... if i wanted the CPU to always run at 1 GHz at all times, can i set min_freq to max_freq with lv1_count at 5?
<memleak>
the kernel configuration im using does not use CPU frequency scaling or power management (suspend, APM emulation, CPU idle, etc)
<memleak>
and i would like my board to run at max speed all the time.
<memleak>
cat /proc/cpuinfo not showing my the current CPU speed makes it difficult to verify it's current speed...
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<memleak>
i'm using cubieboard2 for RT only anyway
<memleak>
not concerned about power savings at all
<Turl>
memleak: enable the performance governor and that's it
<Turl>
you don't need to touch the fex
<Turl>
or just disable the cpufreq system entirely
<memleak>
disable cpufreq makes it run at full speed? i just couldn't verify this because cat /proc/cpuinfo does not tell me
<Turl>
memleak: BogoMIPS should give you a rough idea
<memleak>
heh!
<Turl>
(yeah, they're bogus and you shouldn't rely on them)
<memleak>
what exactly is broken in the first place does not allow MHz to hit /proc/cpuinfo?
<memleak>
is it a kernel or fex bug?
<memleak>
i'd like to fix that..
<Turl>
memleak: no ARM system that I know of shows MHz on cpuinfo
<Turl>
so it's not a bug, it's a feature :)
<memleak>
ah...
<Turl>
MIPS systems don't show them either
<memleak>
now i feel really dumb
<Turl>
there's no reason to feel that way
<memleak>
how sure are you that disabling all cpu freq settings will make the CPU run at highest setting? i know some VIA boards that without performance governor, it will never hit highest frequency.
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<Turl>
memleak: well, if you don't touch it it'll run as fast as it was on uboot
<Turl>
and I believe that's max freq
<memleak>
oh ok!
<Turl>
you can always just enable performance governor if you like it better :)
<CaptHindsight>
ok, so u-boot inits it at max freq and then fex starts to govern speed
<Turl>
fex doesn't do anything, it's just a config file
<memleak>
well Turl with your suggestion on BogoMIPS i guess i could compare the BogoMIPS with performance gov then without any CPU freq stepping in kernel and see the difference.
<Turl>
memleak: that would be ok
<Turl>
memleak: you could run some real benchmark too and compare results
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<memleak>
Unigine Heaven benchmark for Linux seems real enough
<memleak>
thanks Turl for all the help!
<Turl>
anytime
<Turl>
but why would you run a gpu intensive benchmark to test a RTOS system?
<CaptHindsight>
memory bus load
<Turl>
interesting use
<CaptHindsight>
or just use Stress
<CaptHindsight>
all depends
<Turl>
although I like tinymembench a lot
<CaptHindsight>
on x86 the biggest hit we see to RT performance is starting up a browser and streaming flash
<CaptHindsight>
large memory allocations tend to bump IRQ latency times
<CaptHindsight>
thats with SMI, ACPI, APM and any speed stepping turned off
<CaptHindsight>
ARM doesn't have the same train wrecks to deal with, but cpu freq changes based on cpu load is something you want off for max RT performance
<Turl>
ah, so you run desktop workloads on RT systems
<Turl>
I was thinking in embedded RT
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<memleak>
hmm.. why aren't any boards in the newer MALI DRM kernel drivers? i.e. r3p2-01rel4/driver/src/devicedrv/mali doesn't have arch-pb-virtex5-m400-X config.h files in it anymore
<CaptHindsight>
Turl: just for testing, the typical RT app is linuxcnc controlling a cnc machine
<Turl>
memleak: the mali drivers from malidevelopers don't bring board configs as far as I recall
<Turl>
we have to add those in
<Turl>
ssvb has a branch with the newer mali driver merged I think
<memleak>
r2p4-02-rel1 has them
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<memleak>
i'll look into it thanks!
<memleak>
well i gotta run, ill be back in a few days, thanks for all the help guys! i love this community!
<Turl>
:)
<Turl>
see you!
<CaptHindsight>
video playback, HD games, firefox all seem to beat up an RT system well really see where to set minimum thread times to
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<CaptHindsight>
yeah there were some real nuts in arm-netbook :)
<nove>
don't worry, there is also some real nuts here
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<randomblame>
I'm a real nut
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<randomblame>
I have a big fat problem with working on this allwinner tablet - there is no boot to recovery via adb so if I mess up a boot.img or recovery.img I have to reboot to windows and reflash the tab via livesuit and it's taking for freaking ever
<randomblame>
I miss fastboot so much
<Turl>
randomblame: heh, on most you can boot to android recovery with a key
<Turl>
or you know, you can boot a sd card and fix it :)
<randomblame>
no key combo here
<randomblame>
actually that's not a bad idea
<nove>
randomblame: last i heard livesuit could create a usd card to flash the device
<Turl>
you can even make a android recovery sd card if you like adb :p
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<randomblame>
guess I need to find a stack of kernel source that acatualy boots and change cmdline
<randomblame>
I thought they added fastboot to uboot a long time ago
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<Turl>
randomblame: the allwinner uboot has fastboot
<Turl>
but it was pretty broken when I tried
<randomblame>
aw I'd probably need a serial rig to even talk to uboot on this thing anyhow
<randomblame>
reboot recovery from shell doesn't work but adb reboot recovery from the computer does
<randomblame>
that's a kernel issue isn't it?
<randomblame>
if I could just fix that one problem I'd be able to work around most of my other issues
<Turl>
randomblame: are you running reboot recovery as root?
<randomblame>
tried both
<randomblame>
this thing is running 3.4.39 and is sourceless I haven't managed to get a build of sunxi-3.4 to boot
<Turl>
randomblame: from what I recall, you just needed to write stuff to the misc partition, you may be able to do it manually