ChanServ changed the topic of #linux-sunxi to: Allwinner/sunxi development discussion - Don't ask to ask. Just ask! - See http://linux-sunxi.org | https://github.com/linux-sunxi/ | Logs at http://irclog.whitequark.org/linux-sunxi
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<bfree> have something just about written, thinking I'll simply put it as Initial_Ramdisk ?
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<bfree> http://linux-sunxi.org/Initial_Ramdisk (no idea how to categorise it to un-orphan it)
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<bfree> Turl: thanks ;)
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<mnemoc> hansg: /q ?
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<hramrach> mnemoc: sent updated patchset for the nand partitions
<hramrach> all but the last patch should be quite sane ;-)
<mnemoc> why are the days this short :'(
<hramrach> you are not using daylkight saving time?
<hramrach> *daylight
<mnemoc> but still limited to 24h - nap
<hramrach> btw it seems this part is exactly the name in sun3i
<hramrach> but don't know who uses/maintains that
<mnemoc> don't know anyone with sun3i hardware
<mnemoc> hramrach: does this x/7 patchset include the unmerged x/5 patches?
<hramrach> yes, it's just reordered to make more sense
<hramrach> becayse 1/7 and 2/7 was not in the /5
<mnemoc> thanks
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<oliv3r> what is the status on the mtd research from hno and slapin?
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<mripard> Turl: you should ping mike turquette for your clock patches
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<oliv3r> Well I've extracted some data and put it up on the wiki for the NFC controller. Its not much, but every little bit helps, right? Maybe i'll get some more done in time.
<ganbold_> is there any a20 or a31 boards available?
<oliv3r> ganbold bords plenty, as the A20 should be a drop in replacement. but the actual A20 isn't available yet I don't think. The A31, while crap, is shipping i belive and tablets have been spotted I recall.
<libv> powervr! run!
<oliv3r> I did say crap :D
<mnemoc> from charbax interview to eva it seems the A20 isn't a blind drop-in replacement
<mnemoc> it might require pcb changes
<ganbold_> so any other interesting boads than cubieboard that can be obtained in China?
<ganbold_> looks like this egoman tech produces red rpi
<mnemoc> armbrix seems cool. but pricy
<ganbold_> armbrix is from korea, right?
<oliv3r> it's still pin-compatible though
<oliv3r> mnemoc: you need to find a wikipedia dude who knows templateing. I'm seeing that the register address for the A10 and A13 are extremly similar (if not identical) so we can thus more easily put those online
<mnemoc> see the template I did for A10/PIO
<oliv3r> Anybody know if the A13 does PWM-ing of the display backlight?
<oliv3r> I know, but i don't think it suffices
<oliv3r> i was 'thinking' to have a simple 'database' which you can ask to be rendered on any page
<mnemoc> i never said it was perfect for your needs. but it's easier to read than the complex wikipedia templates
<oliv3r> yah
<mnemoc> and so easier to adjust and extend
<oliv3r> Maybe I should just simplify the design
<oliv3r> though I think the current one does what it's supposed to, but just fails to render for some strange reason I can't figure out
<mnemoc> start simple :)
<oliv3r> it wasn't that complex tbh :p
<mnemoc> need to leave. bbl
<oliv3r> stop making me wanna change it :p
<oliv3r> bb
<libv> oliv3r: yes, i both a10 and a13 do use pwm
<libv> s/i //
<libv> i had an "i believe" there, but then i remember the disp unifying work i did many moons ago
<libv> remembered even (pfff :))
<hramrach> pwm for backlight?
<hramrach> how is that supposed to work?
<hramrach> can you tell pwm from volatge drop with anything but oscilloscope?
<libv> hramrach: it tends to be hw controlled, and pretty high frequency
<libv> hramrach: quite a few displays out there have their backlight on pwm
<hramrach> well, I have a workink display with backlight which I would like to connect to A10
<libv> hramrach: i was thinking in the sense of your other LCD-ed devices
<hramrach> presumably the LVDS/i2c/pwm is on the pins on the board
<libv> hramrach: like for instance your laptop
<hramrach> but I don't understand how the pwm wpuld be used
<hramrach> and since it's hf I can't reasonably expect to measure it
<libv> the standard fluorescent tubes remain ionized enough to allow power to flow at 50 or 60Hz AC
<libv> you can buy transformers which boost that frequency to remove the sometimes perceptible flickering
<libv> with LED displays, there simply is no question about speed of switching on/off
<libv> hramrach: pwm, pulse width modulation, the wider the pulse per interval, the brighter the display
<hramrach> I have an invertor which presumably does 5VDC -> ~1,5kV AC
<hramrach> but it has no spec, only the lamp spec says that the voltage at which it lights is at most 1.5kV
<libv> how would that related to pwm?
<libv> s/related/relate/
<hramrach> that's the mystery I am wondering about as well
<hramrach> prusumably if you have a PWM output and use a voltmeter on it it would at least show lower voltage for narrower pulse
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<oliv3r> haven't back-read yet, but the reason why I asked (if this is about my question) the A13 datasheet says there is no PWM on the A13. While I know from the A10, that hte backlight is driven by the pwm from the A10 (or so I was told and some snooping made me assume).
<hramrach> well, that gives slightly different view of the pulses than what I had previously
<hramrach> but does not make it obvious how the pwm fits with the invertor
<hramrach> which it possibly does not
<oliv3r> I assume this would only work for LED based devices using an A10? CCFL based ones would be too power hungry for portable use anyway.
<oliv3r> But it does not supprise me that they overly cleared the datasheet :)
<Turl> mripard: yeah, and I still have to push patchset #2 :/
<mripard> first thing first
<mripard> get the basic stuff merged
<mripard> or at least reviewed
<mripard> and then move forward.
<oliv3r> mripard: how up to date is the mainlining status page on the wiki?
<Turl> oliv3r: pretty up to date, it might be missing patches sent->merged for the led stuff
<mripard> oliv3r: Turl does a good job at getting it updated :)
<mripard> oliv3r: who's working on what is not reported though
<Turl> mripard: you should add what's WIP on your side :)
<mripard> Turl: will do
<oliv3r> :)
<oliv3r> Do we know, or care about the supported hardware chips for ethernet on the a10?
<oliv3r> (hardware wise, not kernel wise)
<mripard> Turl: done
<mripard> Turl: I also put there what I knew was ongoing
<hramrach> oliv3r: I don't understand. All there is built-in ethernet and USB ethernet
<hramrach> hardware-wise any non-broken USB chip should work
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<oliv3r> well there would be only a list of supported ethernet chips, not every hardware phy will work?
<Turl> mripard: ok, mike pinged
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<hramrach> mnemoc: wrt lapdock try pinging lawrence. He seems to have good source of some of the harder to obtain parts but haven't seen him on irc since CNY :S
<mnemoc> iirc he said he was going to .th after CNY... but he should have returned already
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<hramrach> nice place to go for vacation I guess ;-)
<mnemoc> indeed
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<vinifm> Do you think ubuntu is better than debian for embedded system?
<rm> no
<vinifm> I see that ubuntu is more updated
* xenoxaos uses arch
<hramrach> I don't think there is much difference in general
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<hramrach> Linaro migh have better packages for some particular systems. Possibly debian main for others
<hramrach> for sunxi neither works without heavy injection of outside code
<vinifm> 'outside code'?
<vinifm> software or driver
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<hramrach> vinifm: yes ;-)
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<wingrime> thanks
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