hno changed the topic of #linux-sunxi to: Allwinner/sunxi development discussion - Don't ask to ask. Just ask! - See | | Logs at
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<mevon> hello everyone
<mevon> anyone here familiare qith the A10S? or just alive?
<mevon> so nobody survived ZA
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<Turl> mevon: I have one in front of me
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<mevon> sweet
<mevon> Turl do you know about the MK802+?
<Turl> mevon: not really
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<mevon> ok what embedded device do you have? do you boot on an SD?
<Turl> mevon: A10S-OLinuXino-Micro
<Turl> mevon: yes, sort of
<mevon> wish i had one of those, maybe if they were cheaper...
<mevon> Im trying to make a SD card to boot mine
<mevon> but i cannot find the right chan to get help
<Turl> at 45E they do not look way more expensive than an MK802 on miniand
<Turl> in fact it's cheaper :P
<Turl> mevon: this should get you started with a fedora image which runs on A10S
<mevon> i get mine around 40$ us and its got wifi and 1go ram 4go flash
<mevon> shipping included
<mevon> im more of a debian guy :S
<mevon> how is fedora?
<Turl> mevon: but it doesn't have ethernet, a lot of headers for gpio, dual sd slot, analog audio out or >1 USB port
<mevon> never got redhat to load X back in the days
<Turl> mevon: well that's one of the easiest images to install
<Turl> if you want to go the DIY route have a look at
<mevon> wow think its the tut i was looking for
<mevon> but yeah fedora is my plan B :P
<mevon> think ill be running A and B simultenously
<mevon> :PP
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<rellla2> user_2: ^
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<oliv3r> a70x boot0/1 are BEFORE the nand partitions, normally inaccessable
<oliv3r> mevon: settings up the Fedora SD card takes 5 minutes, and most of that is waiting for xzcat to write to the SD card
<oliv3r> it is, by far the easiest to set up and see how things work
<mevon> i see that but for some reason i cannot get the bash script to work, maybe a fedora thing im on ubuntu
<mevon> and get this error
<mevon> "Error cannot determine sdcard-dev from uboot-dev -"
<mevon> i dont know much about .sh scripts
<mevon> but i would like to hardcode the /dev/sdd
<mevon> as UBOOT_DEV
<mevon> nut i dont get the UBOOT_MOUNT part
<mevon> exits at line 68 in
<user_2> rellla, yes?
<rellla> user_2: i created an issue for the damn blueish xbmc bug. do you also want to take a look into source code, to find the issue? ;)
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<user_2> rellla, unfortunately my capability to code is near zero :-(
<rellla> mine too ;)
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<oliv3r> rellla: is it an XBMC specific bug"
<oliv3r> rellla: do we have a bootable xbmc sd image? :)
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<rellla> oliv3r: i assume it is. no problems in vlc, and it is "fixable" by restarting xbmc. i think some initing or freeing goes wrong or misses. but i have no clue with color issues.
<rellla> since about half a year i plan to make an image
<rellla> maybe there you can find some working images: - but i don't know something about the release date.
<rellla> the only thing my skills permit is to compare the different xbmca10 versions -> and willswang vlc, and turn on my brain ;)
<rellla> user_2: native or via libhybris?
<rellla> and am i right, that only video is blueish, not gui!?
<wingrime> Trul: ping
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<oliv3r> hello wingrime :)
<oliv3r> wingrime: you really gonna do axp driver? Lots of work, but if you do, it would be awesome of course
<mripard> wingrime: hi
<mripard> wingrime: you had a question for me last evening?
<rellla> as Brodomir asked on the ml, would it be (easily) possible to make some of these displays ( work on the cubieboard? i never came in touch myself with lcds/lvds ....
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<wingrime> mriprd: yes
<wingrime> mriprd: such ic like axp must go to drivers/mfd
<wingrime> mriprd: but it have side effects
<mripard> which ones?
<wingrime> mriprd: no modules
<oliv3r> rellla: no clue but olimex sells LCD's for their boards, so why not?
<wingrime> mriprd: becose core mfd device must export api for "sub drivers"
<mripard> ?
<wingrime> mripard: take look at any driver in mfd
<mripard> are you sure? all the drivers in drivers/mfd are shown as tristate, so they should be compilable as module
<wingrime> mripard: i see that all drivers in mfd are have some like subsys_initcall
<wingrime> mrupard: that can't be module
<wingrime> mripard: good example 88pm860x-core.c
<mripard> I don't know, I'm looking at pcf50633, and it seems "modulable" to me
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<wingrime> subsys_initcall(pcf50633_init); <- can this be module ?
<mripard> see, 88PM860X is listed as a bool, not a tristate
<mripard> so I suspect it can't be a module for some reason
<mripard> maybe it has to be there at boot or the kernel won't work or something
<wingrime> mripard: no, it becose driver exports api for slave drivers
<wingrime> mripard: for example axp must export axp_read_reg and axp_write_reg
<wingrime> slave devices can be modules
<wingrime> i think (not sure still)
<mripard> I don't see why you should export functions
<wingrime> EXPORT_SYMBOL_GPL(pcf50633_reg_read);
<mripard> slave devices will call the usual irq/gpio/whatever functions
<oliv3r> that looks like a nasty driver to me
<mripard> yeah, they do it
<wingrime> mripard: atomic!
<mripard> but I see no reason for *you* to do it
<mripard> atomic?
<mripard> like, in an irq context?
<wingrime> yeax
<wingrime> critical section
<wingrime> mripard: and don't forget we need handle bunch irqs from axp
<mripard> you can most of the basic frameworks in an interrupt context
<mripard> like, gpio, i2c, etc.
<mripard> they seem to have splitted the driver in several places
<mripard> which is why it is exported presumably
<wingrime> axp-input,axp-regulator,axp-battary
<wingrime> minmal set
<mripard> but looking at random drivers without any context is not very efficient
<mripard> and that can be a single driver
<wingrime> mripard: but still, will this aproved
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<mripard> the only way to find out is to actually write it and get review
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<mripard> you can't expect to do it write the first time
<mripard> ouch
<mripard> s/write/right/
<mripard> so, do something, whatever you like most, send the patches, and we'll start the discussion from there :)
<wingrime> mripard: also don't forget we must have reset and poweroff stuff exported using EXPORT_SYMBOL_GPL
<wingrime> mripard: and this make this driver automaticly non-module
<mripard> you don't have to export it for reset
<mripard> just to set the arm_pm_restart callback
<mripard> and I would like to not worry about restart/poweroff for now
<mripard> it's tricky to do it properly
<wingrime> mripard: that callback can use input device for it?
<wingrime> mripard: I think we need axp-input for powerbutton
<wingrime> oliv3r: it seems to be more complex driver that a thinked bevore
<wingrime> oliv3r: how you sid driver?
<mripard> wingrime: hmm, you can do the poweroff actually, it's the reset I'm more concerned about
<wingrime> mripard: with dealy and without, soft and hard reset
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<wingrime> mripard: regulator part can be sended in different patch set, I think about mostly for first version with axp-input and axp-batt (show power source and procentage) )
<oliv3r> wingrime: it's a very simple driver that took way more effort then imagined :)
<oliv3r> wingrime: i would try something extremly simple, like IR :)
<wingrime> oliv3r: basicaly not difficult , but complex
<oliv3r> a lot of work
<oliv3r> and if you never done a mainline driver, it may be a bit daunting :)
<oliv3r> I know your smarter then me, but I wouldn't try something that big first, small drivers first ;)
<wingrime> oliv3r: It can be simple in first version
<oliv3r> true true, still it's a complex driver
<oliv3r> but now, i first gotta shop for some lio AA batteries :)
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<mripard> wingrime: yeah, I'd agree that the regulator part can be sent later
<mripard> especially since we have no driver that might use it for now
<wingrime> mripard: mripard: also I have no idea how handle problem evnets like pwm voltage low that setted
<mripard> hmmm, I don't understand what you mean, sorry :S
<wingrime> mripard: axp can send irq in many cases
<wingrime> mripard: if configured voltage low that expected
<wingrime> or overvoltage
<wingrime> also I want use cached register access
<wingrime> regmap api
<mripard> using regmap looks reasonnable yes
<wingrime> mripard: can single patchset touch different kernel subsystem?
<hno> wingrime, yes, but only when needed.
<wingrime> hno: axp driver will be more complex that expected so , core driver must go to mfd , input-button to input , batt/charger to power
<oliv3r> that will be a patch-set
<oliv3r> 1 patch per subsystem you touch
<hno> err. a patchset can cross as many subsystems as desired. Individual patches should be split to make them reviewable and bisectable.
<hno> yes
<mripard> wingrime: MFD means multi-function device drivers, so anyway, I guess all the features can go only to drivers/mfd
<hno> quite often more than one patch per subsystem.
<mripard> but yes, otherwise, split nicely your patch with the rule "do only one thing in a given patch", and that's it
<wingrime> I would decide it before I will have to send v2 or v10 version
<wingrime> mripard: and I actualy can do poweroff with axp , how it will be suported by march-sunxi >
<wingrime> &
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<wingrime> mfd can support it using export symbol
<hno> wingrime, start simple and work up from there. Send for rfc when you have something basic working. Expect a number of rounds before done.
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<hno> almost nothing gets done right on first attempt, and much easier to have a dialogue while fitting the things together than a full scale review whe you think you are done..
<mripard> wingrime: just like you have a arm_pm_restart hook, you have a pm_power_off callback that you can set.
<mripard> but like hno is saying
<mripard> start simple.
<mripard> don't try to support every thing, in every cases
<mripard> have a small driver that have a few features first
<wingrime> hno:agree so I think only mfd-core(with axp_read_reg and axp_write_reg exports ) + axp-battery (simple procentage and voltage monitor)
<wingrime> mripard:^
<mripard> this will allow to figure out stuff like in which folders should it go, etc
<mripard> and then, build on top of that
<hno> wingrime, and start early on the cover letter explaining what the patchset is about and your intentions.
<wingrime> hno: I should cc-ed it to mtd and power mail-lists and linux-sunxi ?
<oliv3r> mfd*
<oliv3r> + each subsystem maintainer
<oliv3r> but the very first RFC, i would only send to linux-sunxi :p
<hno> mtd?
<hno> RFC to the lists I think. To maintainers when time for review.
<wingrime> mfd
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<wingrime> jemk: are you finished your exams
<wingrime> ?
<jemk> wingrime: not yet, but i try to work on cedar too
<wingrime> jemk: I have find more one reg for mpeg
<jemk> where did you find this startcode register? i've never seen it in traces?
<wingrime> In trace
<jemk> of what file?!
<jemk> type
<wingrime> I uploaded my traces
<wingrime> to dl.linux-sunxi
<wingrime> also I made sed script for trace cleanup
<wingrime> already cleaned and with names
<wingrime> take a look
<wingrime> jemk: also header reg not used
<wingrime> in mpeg4
<wingrime> also mpeg4 engine not require set frametype
<jemk> hm, interesting, seems as i have missed many things
<wingrime> it return result header I think
<wingrime> It complitry diferent with mpeg12
<wingrime> sed script for cleanup and add regs name to trace
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<wingrime> jemk: for mpeg there is startcode search procedure
<wingrime> jemk: and like entry point
<wingrime> that reg return some offset
<wingrime> to it
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<wingrime> jemk: insted MAC_MPEG_HDR for mpeg4 used MACC_MPEG_VOPHDR
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<wingrime> but it have no any frame type field
<wingrime> see
<wingrime> A| 0| S 0401d114 MACC_MPEG_CTRL 4: 80084198 I|054a37ca F| mp4_set_vop_info+1685
<wingrime> for I frame
<jemk> yes, i know, mp4 uses different regs, but i didnt look into what they could mean
<wingrime> A| 0| S 0401d114 MACC_MPEG_CTRL 4: 80085198 I|054a37ca F| mp4_set_vop_info+1685
<wingrime> for B or P
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<jemk> what chip did you use to make traces? my a10 doesnt have 0c1f0, trace looks totaly different.....
<jemk> traced Futurama -> no startcode reg
<wingrime> I used a13
<wingrime> can you use sed -f trace-parse.sed trace_mpeg2_Futurama.txt > mpeg2_Futurama.txt
<wingrime> and than use diff | less for it
<wingrime> with my trace
<oliv3r> mripard: ping
<wingrime> nho: we now have whole boot from aw opensourced
<wingrime> ?
<oliv3r> wingrime: we have source, we don't know if it's the actuall source from the binaries, we ahve our doubts
<oliv3r> wingrime: we onl yhave code for a20 officially
<oliv3r> a1* we haven't seen code for, though judging from the a20 sources, u-boot-spl pretty much is boot0
<oliv3r> wingrime: lkcl is going after AW to sort the GPL license on a20 stuff, and get the a31, a1* branches
<wingrime> oliv3r: I see code for all binaries in boot partition in a20 sdk
<oliv3r> i haven't looked at a20 sdk :)
<oliv3r> though it lacks a usermanual unfortunatly
<oliv3r> do you have an url so I can take a peak?
<wingrime> torrent
<wingrime> on omniplex
<oliv3r> oh, not sure if that's licensed properly then
<oliv3r> i know olimex released the a20 sdk i've heard
<oliv3r> Thanks to rz2k for setup and hosting the torrent! The link is from A20 Wiki page on our web.Thanks to rz2k for setup and hosting the torrent! The link is from A20 Wiki page on our web.
<wingrime> oh funny
<wingrime> google aps included
<wingrime> oliv3r: look like our nand is realy IP
<oliv3r> wingrime: what do you mean? libnand sources where released even for a20 a few weeks ago
<oliv3r> this torrent may hold old data
<oliv3r> we have the kernel for a20 allready anyway
<wingrime> good
<oliv3r> and boot0/1 sources too :)
<oliv3r> we only really need a usermanual
<wingrime> but what a hell thay done that crap like libnand
<jemk> wingrime: what libvecore do you use? either we have a difference in chips or in libvecore
<jemk> diff shows only difference are the extra startcode searches
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<wingrime> jemk: that preinstalled by installer
<jemk> md5sum?
<wingrime> jemk: I mean from linux sunxi
<wingrime> but we have only one imge for linux-hf
<jemk> i've seen at least two
<wingrime> a10 and a13 have differnecs indeed
<wingrime> jemk: how my tool for scritp clean?
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<jemk> needs to remove the address too to make diff useful
<wingrime> this easy
<wingrime> jemk: I thinking also about IRQ flags
<wingrime> jemk: blob and driver use 0x7c mask for irq set
<wingrime> jemk: and for clean pending
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<wingrime> jemk: I have idea that cedar can work like dma with shadow regs set
<wingrime> jemk: I mean, after you configured engine registers
<wingrime> jemk: And lauched , you can load new register set before cedar finished word
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<wingrime> you only need wait registers movig to shadow registers
<jemk> wingrime: possible, but i don't really believe that
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<jemk> rellla: is there any player able to use the newest libhybris libvecore from your repo?
<jemk> with vlc some fbm_ symbols are missing
<wingrime> jemk: I wan't use something different that vlc
<wingrime> it drop frames
<wingrime> with tracing
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<wingrime> jemk: are you have any idea what NFC means?
<jemk> no
<hramrach__> wingrime: it's eg. a bus somewhat like spi/i2c/..
<wingrime> jemk: also I have ask you about join some forgotten bits form old regs page
<hramrach__> but TLAs are too overloaded
<hramrach__> might be 10 different things
<wingrime> jemk: whait I show wherer
<wingrime> hramrach: some buffer
<hramrach__> apparently it's wireless
<jemk> FR^2: nfc associated with mpeg4 codecs
<jemk> not wireless
<wingrime> jemk: see "Set JPEG Input format"
<wingrime> jemk: can you move bit to
<wingrime> sampling modes
<FR^2> jemk: *g* Okay :)
<jemk> what is missing there?
<jemk> they are there... bits 29:27 in reg 118
<wingrime> jemk: maybe I forgot but I defently saw something around need moving
<rellla> jemk: i didn't test it till now
<rellla> jemk: did you use ssvb's linhybris branch?
<rellla> *libhybris
<jemk> rellla: no, i only used the files from your repo and it worked after some manual work except missing fbm_alloc_yv12_frame_buffer
<jemk> maybe i didn't quite understand what libhybris does, but it seems it is already done there
<hramrach__> actually the register name is spelled NCF in another place which is another un-helpful acronym
<jemk> wingrime: o.o strange things happen there in your trace, but it seems i can't reproduce them because it's really a13 (and higher maybe) specific
<hramrach__> but M-NCF is some mpeg related acronym, apparently
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<wingrime> jemk: when you begin implement mpeg12 poc?
<wingrime> ssvb: ping
<hramrach__> actually amybe it gets close to mpeg due to alphabetical sorting
<ssvb> hi wingrime
<hramrach__> maybe NCF ~ non-coded frame
<hramrach__> not sure how they fit the de/encode workflow and if they need a separate buffer
<wingrime> jemk: it can be I-frame
<hramrach__> hello bfree
<hramrach__> you have a repo of debian packages somewhere?
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<bfree> hramrach__: a very small repo of the minimum (kernel, u-boot, sunxti-tools) "deb ./"
<hramrach__> will have a look
<hramrach__> thanks
<oliv3r> wingrime: jemk: you guys make me happy and proud. Just thought it needs to be said :)
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<FR^2> I'm trying to compile a kernel using the branch sunxi-3.0
<davidgol> Hi. I would like to know where download the A20 datasheet with full list and description of internal devices/registers. There is a place ?
<FR^2> arch/arm/kernel/head.S:93:2: error: #error "unsupport chip"
<FR^2> davidgol: could be an entry point
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<davidgol> FR^2: already read... there is only a brief sheet useless to do something with that chip
<Black_Horseman> adios muchachos
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<rz2k> davidgol: you can download A20-SDK
<rz2k> and look at HdG work at linux-sunxi 3.4 for A20
<rz2k> basically it is all we have right now
<buZz> haaaans
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<rz2k> a20-sdk is now available as .torrent for ease of download
<davidgol> A20 SDK ? where ?
<davidgol> ah torrent... I will search
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<davidgol> thanks for link...
<rz2k> you are welcome
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<rz2k> catch Hans de Goede around or at the mailing list if you have particular questions
<buZz> you can also visit him in the RevSpace hackerspace in the Netherlands
<buZz> :)
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<mripard> oliv3r: pong
<oliv3r> mripard:
<oliv3r> mripard: have you read greg's message with patch?
<oliv3r> mripard: i think he implemented binary attributes only for device; not for platform_device -> device_driver, correct?
<oliv3r> mripard: I added it to device_driver since we still can't use it otherwise
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<mripard> oliv3r: you have a device structure embedded into platform_device
<mripard> so you can use that one
<oliv3r> oh
<oliv3r> i was kinda happy with my solution :(
<oliv3r> mripard: are you sure?
<oliv3r> i have platform_driver (my typo before)
<oliv3r> which has device_driver
<oliv3r> and neither have struct device
<mripard> that you have a device in platform_device?
<mripard> yeah, pretty sure.
<oliv3r> i odn't have platform_device
<oliv3r> i have platform_driver
<oliv3r> i made a typo, sorry
<mripard> look at your probe prototype
<oliv3r> yeah but
<oliv3r> module_platform_driver(); has the platform_driver struct
<oliv3r> and i thought its there where you define your default attributes
<oliv3r> i thought you wanted to define it BEFORE probe was called
<mripard> for the driver
<mripard> not the device
<oliv3r> what do you mean
<oliv3r> we allready have platform_driver -> driver -> attribute_groups; so i added bin_attributes :)
<mripard> I need to look into this, I don't have time right now, I'm busy doing something else, sorry
<oliv3r> mripard: no problem
<oliv3r> but that's what i wrote :)
<oliv3r> including my driver adaption
<oliv3r> mripard: but go do things now :)
<oliv3r> Turl: ! :p ^
<oliv3r> oh bah, my git diff shows my changes + greg's :S
<oliv3r> no, i lie, it didn't
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<user_2> <rellla> and am i right, that only video is blueish, not gui!? <--- yes, only video/movie is bluish, gui is normal.
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<rellla> i compiled xbmca10 for debian wheezy against new cedarx sources/libs. if anybody is interested, i will upload somewhere. can't test it myself atm...
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<atiti> where are the new cedarx sources?
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<rellla> atiti: but still missing vecore sources themselves for sure
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<atiti> rellla: nice, ill give it a try
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<rellla> precompiled xbmc package went here:
<rellla> but i doubt it will work without some libhybrising as this seem to be armv5 binaries
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<rellla> libhybris gets here - based on this vecore.c
<rellla> but i don't know if i mix up things in initializing. maybe ssvb knows how to do it right...
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<atiti> hm
<atiti> so is this a complete rewrite?
<rellla> of what?
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<atiti> cedarx
<rellla> nah. some abi changes
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<rellla> and hopefully some fixes. but nobody tested it so far
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<user_2> i downloaded the tar file. i will try to recompile tomorrow.
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<oliv3r> ho new is this new lib?
<rellla> May 20th
<rellla> but unfortunately v5te again
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<wingrime> but is good for old tracer
<oliv3r> ok, old nes :)
<wingrime> mripard: what patches currently pending for aprove are you sended?
<wingrime> oliv3r: same for you
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<oliv3r> wingrime: mripard has the i2c patchset thatś very recent
<oliv3r> mine isn approved yet ;(
<wingrime> whats problem
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<oliv3r> well, i used a bin_attribute and greg said i couldn't use it because of a race with userspace
<oliv3r> turns out, the other way wasn even possible :)
<wingrime> well just drop some support
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<wingrime> and use printf for it
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<Turl> yay, net-next landed :)
<atiti> hm
<atiti> theres been too many netsplits lately
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<Turl> atiti: freenode is being attacked, judging by the global notice
<wingrime> Turl: what mean ServeMode ?
<Turl> wingrime: hm?
<wingrime> 122:43 -!- ServerMode/#linux-sunxi [+o ChanServ] by
<wingrime> first time see such message
<Turl> wingrime: that means chanserv got +o from someone :)
<Turl> in this case from the server itself
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<wingrime> Who have +o on this channel?
<wingrime> Turl: are subscribed to linux-kernel ?
<wingrime> *are you
<buZz> yay, new PSU for my cubieboard \o/
<Turl> wingrime: look for people with @ before their nickname
<Turl> wingrime: lkml? no
<Turl> wingrime: but I am to lakml (linux-arm)
<wingrime> Turl: I can't find mfd maillist
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<Turl> M: Samuel Ortiz <>
<Turl> T: git git://
<Turl> S: Supported
<Turl> F: drivers/mfd/
<wingrime> Turl: also I am many years using irc and know that @ not always means admin (some who can get it from bot using request)
<Turl> so I guess it's that guy and lkml
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<Turl> on most clients @ means you have +o
<wingrime> Turl: yeax, but usualy only bot have +o
<wingrime> Turl: and some can get admin using command to bot
<Turl> or channel owner
<Turl> chanserv is a bot, kind of :)
<buZz> its a network service :)
<wingrime> technicaly bot
<wingrime> it required for channel to be exist when no one here
<buZz> there is never noone here
<buZz> but it also helps to prevent ppl stealing the channel
<wingrime> but If server restarts so it possible 'no one here'
<Turl> buZz: nice psu, but I don't like the fact that 220AC and 5DC terminals are next to each other :P
<buZz> why not?
<buZz> you like to lick them? :P
<buZz> this PSU is going inside my cubieboard case
<buZz> will soon have 3d printable files for my mods to this design
<wingrime> buZz you can use any china charger
<Turl> well, if you're going to embed it I guess it's fine
<buZz> wingrime: you are not listening
<Turl> but I wouldn't use it over my desk
<buZz> no me neither, not like this
<Turl> not unless I put a crapton of electrical tape over the AC connectors :P
<buZz> wingrime: i mean, sorry, that sounded harsh, i mean, it _IS_ what i am going to use ;)
<buZz> i will also add some USB female plugs to the case, just for charging crap
<buZz> or maybe put a powered hub behind it
<Turl> with shorted data lines? :)
<buZz> might do that yeah
<buZz> for my tablet thats needed anyway
<buZz> or it will switch to 100mA charging >_<
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<zeRez> hi there
<zeRez> just a polite question about lima project, how good is it running at the moment? i think about to buy a cb or the cubietruck when released, but iam a lil bit afraid of the performance from mali cause there are only reversed drivers !?
<zeRez> "The Lima driver currently only has some preliminary and highly experimental support. This experimental phase is necessary to gain a full and complete understanding of how the Mali GPUs work. Once more is known, an actual graphics driver (most likely based off of Mesa/Gallium) can be written. There is a lot of interesting work that still needs to be done!"....okay got my answer. So i think, things lik
<zeRez> e 1080p or 3d graphics wont work atm?
<rellla> lima isn't a driver yet
<zeRez> okay, so that means?
<zeRez> no gpu support yet?
<zeRez> my problem is, that iam looking for a nice one-board-computer, and the more i read, the more devices there are in my the details are intresting...
<zeRez> read annoucement about cubietruck, which sounds like its the right device for me, the only thing iam afraid of, is the problem with mali/lima drivers...
<zeRez> so i thought, i will ask ppl which know more about here on irc ^^
<rellla> to use mali 3d, atm the only possibility is to take the mali binaries because there isn't a lima driver yet.
<zeRez> okay
<zeRez> but it sounds like the hole thing is rolling/at is the performance of the mali bins?
<zeRez> Is it useable in case of multimedia stuff?
<zeRez> My first case is learning about ARM Platform, but i think i will use it for media too...
<Turl> zeRez: mali is just useful for OpenGL ES
<zeRez> okay
<zeRez> hard choice
<zeRez> ^^
<zeRez> read about the freescale guys, who supporting the community with drivers and they are os friendly...
<zeRez> but from specs, i like the cb2/ct
<zeRez> so dont know what to do
<zeRez> :/
<Turl> zeRez: when you get into the ARM world, you need to forget the GPU concept from the x86 world
<Turl> GPUs on ARM just do 3D acceleration
<zeRez> Turl, you mean cause ARMs are SoCs?
<Turl> zeRez: I'm just saying because you used Mali and 1080p on a sentence :)
<Turl> mali just does 3D rendering
<Turl> video output is done by another thing, not mali
<zeRez> ahh okay...i see
<zeRez> saw it on a shematic
<zeRez> sry :P
<Turl> hardware video decoding is done by yet another part, cedarx
<zeRez> so for videoencoding there a another peace on the chip right?
<Turl> yes
<zeRez> only read that the a10/20 mali wont work nice with media stuff, but maybe that where ppl without knowledge
<zeRez> so how the a20 is running? is a linux "workstation" usuable and stable...or isnt it really useful?
<zeRez> Turl, which board(s) do you own? iam really intrested in the hole topic....questions over questions :P
<Turl> zeRez: mele & cubieboard (A10), and an A10S-OLinuXino-Micro (A10S)
<Turl> and a cubieboard2 is in the mail :)
<zeRez> okay
<zeRez> there all singlecore right?
<zeRez> ^^
<Turl> the ones I have here, yes. cubie2 is dual core (A20)
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<zeRez> yep, i know so far :P
<zeRez> and cubietruck will be a20 dual core too right?
<zeRez> btw any new information about release from cubietruck Turl ?
<zeRez> I think the right question for me is, what i can aspect from a a20 at all. Can you tell me? :P
<zeRez> or tell me hows your work with the a10 chips ^^
<zeRez> nonetheless i will wait for cubietruck release, hope that anyone will does a review and than i will make my choice ^^
<zeRez> But i think the arm devices are really intresting
<zeRez> Turl, do you know a good book about arm assembly?
<zeRez> or free papers ?!
<user_2> im dowloading chromium-browser source... crazy! more than 680M of source!!!
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<user_2> zeRez, A20 disappointed me. it is "hot" even if slow than A10 (912MHz vs 1008Mhz).
<hglm> zeRez: The ARM website has a lot free ARM assembler info -- you can print some quickreference guides.
<zeRez> hglm, thanks for hint but got them yesterday
<zeRez> :P
<zeRez> user_2, really? why that? isnt it running good at all?
<zeRez> hglm, searched for free books as well....found some pdfs on internet...think it will be enough to start. Doy you have experience in arm asm or asm at all?
<user_2> zeRez, there are 2CPU, 2GPU... it double transistors, but not scale down the geometry of transistors, so the SoC is hot.
<hglm> zeRez: Yes, recently I have done some asm work in ARM, it is not too hard. You can optimize for Thumb2 mode too (reduced code size). Make sure you use the right directives in your .S files declaring the function.
<zeRez> user_2, ahh got cha! first i thought you mean the device is "hot" in the meaning of really nice :P. Isnt there a cheap heatkit for cubie out there?
<user_2> no, hot in meaning of temperature :-)
<zeRez> hgml okay, thats a good hint. Think i will learn it the painful way when it wont run ^^
<user_2> heatkit no exixts asaik
<zeRez> user_2, yes, understood you now :P
<zeRez> here in eu you can buy some for a few euro user_2
<user_2> EU is big... where exactly?
<user_2> anyway thre solution is NOT to place heatcooler, the solution is to srink the thansstor geometry.
<user_2> nice kit
<zeRez> so we need another chip than a20 ?
<zeRez> i think so, hope there will be one for cubietruck too :P
<user_2> no, we need A20 but not at 55nm. we need A20 at 28nm
<zeRez> ahhh okay
<zeRez> so that will reduce heating from the sock
<zeRez> cause of lower voltage?
<user_2> yes
<hglm> Does Allwinner have anything in the pipeline at lower geometries? Rockchip does but they're not too Linux-friendly at the moment.
<user_2> to scrink the nm will solve all the heat problem
<zeRez> hglm, do you have experience also with x86 asm? ask because iam at the beginning to learn and intrested in ppl also coding asm ^^
<zeRez> user_2, but it will make the production more expensive too ^^
<user_2> 40nm is already a "old" teclnology, so it will be usable for cheap price.
<zeRez> and make less heat problems
<zeRez> :)
<user_2> 55nm is too much for A20, il make it hot
<hglm> zeRez: Yes, I did x86 asm a long time ago. But ARM asm is not difficult to learn if you already know some other assembler.
<zeRez> is it hot all the time?
<zeRez> hglm, iam at the very beginning...learning about the processor and how it works...but hope to write my first lines of asm next days :)
<user_2> i can refere only what a frined told me: even if his CB2 is oly turned on and run in idle mode, the A20 is more than warm. it doenst appen to my A10. so A20 at 55nm is not a good choiche.
<hglm> user_2: If the CPU is idle even the A20 at 55nm should not be hot, maybe power-management is broken.
<zeRez> Iam very intersted in asm cause i think it makes you to a better programmer at all...cause you understand whats hapening in the machine and so you can write better code that works more efficent even in high-level
<hglm> zeRez: Yeah it helps to know how C code compiles to asm. Try objdump --disassemble <objectfile.o>
<user_2> hglm, im not telling this to talk bad, only to report what one told me. when i will have my A20, i will be able to test and report by mysel what happen to me.
<zeRez> so what iam doing know? waiting for another allwinner chip? or just for the cubietruck? *confused*
<zeRez> hglm, ahh i can inspect my object files with it on assembly to know what the compiler does with my code? :)
<user_2> zeRez, in my opinion - based on sole "second hand" info -, actual A20 is not the magic i supposed it should be. take it, but be warned.
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<user_2> in my mind A10=55nm and A20<=40nm. if it is not, than i am not happy cos it will became necessary a dissipator, that is a bad news for embedded device.
<zeRez> user_2, okay...will have it in mind, thanks for the warning! Maybe the heatkit is a good choice than!
<user_2> cubuetruck seems to be -on the paper- a good device. i hope it will be moved asap to A20 <=40nm
<hglm> user_2: Rockchip has had a faster dual core at lower geometry out for quite a while used in millions of Android tablets (just like A10 has been for single core). I guess A20 is targeted at low-end.
<zeRez> user_2, how is the performance side from a20? you friend told you?
<zeRez> is there a "big" gap from a10 to a20...?
<user_2> hglm, unfortunately, cubie came only wit allwinner.
<user_2> zeRez, more or less, A20 is 180% compared to A10 100%.
<user_2> so if you have 2 conucrrent task A20 is ok, if you have only one task, a10 is better.
<zeRez> okay
<user_2> but this is on theory, i will be able to say better afer test A20 compared to A10 in my hands.
<zeRez> thanks :)
<zeRez> i will be here when you talk about :P
<zeRez> hglm, which devices you are working with?
<hramrach__> hglm: the rk3066 cannot boot off SD which sucks but they fixed that with rk3188
<user_2> wht about thet het dissipator? it ise a adesive, not a glue... im perplex
<hglm> zeRez: I have a standard A10 tablet (1GB) which works pretty well, also have a RPi.
<hglm> hramrach: OK, then rk3188 could be usable with Linux in the future.
<oliv3r> wingrime i got a china charger, i can't use sata power with my '2 am 5V psp charger' from ebay
<hramrach__> In my experience A10 gives _very_ low end desktop.
<hramrach__> the memory is too slow so you get very low performance
<oliv3r> buzz don't shorten data lines, put a restior between d- and d+ (you can easly google the value)
<zeRez> hglm, okay :)
<zeRez> hramrach__, how it is with a20?
<zeRez> any experience
<zeRez> ?
<hramrach__> a20 does not seem to improve much on that
<hglm> hramrach: A10 is not that bad, for an older single core it runs pretty well, much faster than RPi.
<zeRez> so also low end desktop?
<hramrach__> there is more possibility to tune hte memory controller on a20 but it is less stable on higher clocks
<buZz> rpi is an annoyingly slow desktop
<zeRez> hramrach__, i see
<buZz> a10 is better, a20 is not much but a little better
<hramrach__> hglm: it is good when it runs gnome. now it crawls gnome
<buZz> i have used all 3 on a lapdock for some time
<ssvb> hramrach__: just don't use gnome :)
<buZz> i use fluxbox :)
<hramrach__> ssvb: I use it as benchmark
<hglm> hramrach: You are probably benchmarking software-compositing, which would be slow on any system.
<hramrach__> on a10 we have accel
<hramrach__> actually the hw compositing is slow for small updates and sw compositing is slow for large updates
<ssvb> hglm: not quite software compositing, but still excessive memory copies in the case of gnome-shell
<hglm> ssvb: OK, so sunxifb's hardware blit gets used for compositing?
<hramrach__> and th accel does not work on a20
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<wingrime> oliv3r: use pc's power-unit 5V 120 A with 600 W easy
<hramrach__> also it's not even possible to use full 1080p display resolution probably due to slow memory
<hramrach__> it's just underpowered
<ssvb> hglm: gnome-shell is using gles compositing, and is handled in a somewhat suboptimal way
<hramrach__> it's not that yo ucannot use the a10 or a20 for something but desktop is too demanding these days
<hglm> ssvb: I see, nice that it uses GLES, but Mali400 isn't too fast anyway and not optimized for compositing.
<ssvb> hramrach__: I believe the acceleration will work on a20, when the other things become a bit more stable and we move to 3.4 kernel
<hglm> In my experience Mali is very slow when doing anything with transparency (compositing).
<hramrach__> it's the memory that is the bottleneck, not mali
<hramrach__> it might be that mali is next on the list but that's irrelevant
<hramrach__> I guess something like exynos 4/5 would do for a desktop
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<zeRez> but it will run lxde without comp right?
<zeRez> ^^
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<hramrach__> I would like to know the speed of rk devices but their kernel does not even do frequency scaling so far so they don't want to publish benchmarks of current suboptimal performance
<hramrach__> lxde does sw compositing - or was it xfce?
<hramrach__> either way you will get abysmall performance for moving windows
<hramrach__> without hw accel
<zeRez> okay
<zeRez> and we havent hwaccel atm for a20 chips?
<hramrach__> android avoids that issue by making windows non-movable
<hramrach__> no accel atm
<hglm> hrma: not true, sunxifb has some nice optimizations for dragging windows even without hw accel
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<hramrach__> did not work for me last time I tried.
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<zeRez> so now iam unsure if i should spent my money for a a20 device :S
<zeRez> hoped that it can be used as a simple desktop at all
<hglm> zereZ: When using A10 (or A20) a simple desktop is very usable, it is not slow with LXDE or XFCE.
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<zeRez> hglm, it only got trouble with composite/"big" desktops
<hglm> zeRez: Just don't use compositing.
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<hglm> I have experience with a 3D engine running on Mali, and anything related to transparency slowed it down a low -- I think that's why GLES compositing is slow also on Mali. Mali is only meant for single-pass 3D rendering.
<zeRez> hglm, ok
<zeRez> thats not a problem in "my usecase"
<zeRez> ^^
<oliv3r> i guess as simple desktop, the a20 should be better due to its double cores
<hglm> Yeah dual core should work well in a Linux environment.
<oliv3r> wingrime: that's not very power efficient
<oliv3r> Turl: ping
<hglm> But I think the A10/A20's G2D engine can theoretically be used for compositing (alpha blending), but if it does it would require some work to implement.
<oliv3r> A* needs tons of work still
<oliv3r> i think A* has a lot of potential
<oliv3r> a lot of potential that AW hasn't used yet
<oliv3r> due to sloppy/bad code
<oliv3r> Turl: :(
<Turl> oliv3r: pong, sup
<oliv3r> you never replied to my ping 5 hours ago! :(
<oliv3r> maxime had to go
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<Turl> oliv3r: I was probably half asleep 5h ago :p
<Turl> oliv3r: what's up?
<oliv3r> let me phone my sprunge :)
<oliv3r> what do you think
<zeRez> so i have to go for now, maybe back later :). Thanks for answering my questions and for the hints guys :)
<Turl> oliv3r: dunno, if it works I suppose it's okay :P
<oliv3r> well that's a little problem
<oliv3r> zeRez: no problem :) come back anytime
<zeRez> :)
<zeRez> thank you guys!
<zeRez> cya l8r
<zeRez> ^^
<oliv3r> Turl: for some reason, after that patch, platform_get_data() doesn't return the same that i have set wit platform_set_data()
<oliv3r> which does not make sense at all
<Turl> oliv3r: does it work without the patch though?
<Turl> I had issues too with the platform get thing
<oliv3r> excellent question
<Turl> when I hacked your earlier version
<oliv3r> i don't have a sysfs node without the patch
<oliv3r> well allt hat should involve platform_data_get/set
<oliv3r> it works fine
<Turl> oliv3r: I think the sysfs obj you get is not the one you're attaching to
<oliv3r> (if i comment out the 'read_byte' function and just printk the memory address of what platform_data_get retrieves
<oliv3r> i see
<oliv3r> that's shit :)
<oliv3r> i don't understand
<user_2> gentlemen, im recompiling chromium 27... someone alreadyd did it?
<oliv3r> i'm on gentoo :)
<user_2> im recompiling on Cubieboard.
<user_2> 687MB of sourse code... i wonder how many time it is needed to compile .-)
<oliv3r> 4 days
<user_2> oliv3r, u serious?
<oliv3r> and i'm not kidding
<user_2> o-my-god! :S
<oliv3r> my phenom II, 6 cores; 8 gigs of ram, takse about an hour
<oliv3r> maybe 2
<hglm> Is chromium 27 supposed to work on ARM?
<oliv3r> i would think so
<user_2> a crhomium was oresent in linaro,
<oliv3r> doesn't android ship chromium now by default
<hglm> oliv3r: that would probably be Chrome for android not chromium.
<hramrach__> chromium should work
<hramrach__> just broken on debian atm
<oliv3r> chromium is the OSS version of chrome
<oliv3r> chrome is propriatery
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<hramrach__> there is no chrome for arm linux :/
<user_2> someone na cross compile using a powerfull x86?
<hramrach__> just wait till they fix it
<hramrach__> there is iceweasel and probably midori too
<oliv3r> Turl: greg just posted a new patch :)
<hramrach__> user_2: if you really want to compile chromium look into distcc
<user_2> distcc run oalso on cubieboard?
<user_2> let me check
<hramrach__> it should work anywhere
<user_2> yes it is present in repositories
<hramrach__> and if it does not fix it and write a wiki page about it ;-)
<oliv3r> or, cross compiling
<hramrach__> crosscompiling that would be a nightmare
<user_2> im doing on CB cos i didt suspect it was a so massive task.
<user_2> i will use the chinese strategy: to wait.
<hramrach__> it's not massive. cb is just slow
<user_2> hramrach__, yes, "massive" comparated to hardware
<user_2> it is stimulating me the idea to "cluster" some CBs using distcc :)
<Turl> oliv3r: with your proposed fix in? :)
<hramrach__> it's not meant for compiling stuff
<hramrach__> user_2: use an emdebian or linaro cross-compiler for the distcc server
<user_2> hramrach__, why i cant use my own debian?
<oliv3r> Turl: no greg did something far more awesome
<hramrach__> no, you build on x86 and link on cb
<Turl> oliv3r: let me see then :p
<hramrach__> user_2: you can. just need the crosscompiler on it
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<user_2> distcc is not just a "sceduler" between different cpu?
<oliv3r> it's ont he ML
<user_2> if i install on 2-3 cb networked, do it use native gcc for arm?
<oliv3r> user_2: no, distcc is a client-server thing
<oliv3r> you need to have identical version compilers on each build host
<user_2> yes, but bot cleint and server are on cb
<user_2> at least 2 CB, one server, one client
<oliv3r> distcc will then take a C file, send it off to one of the other clients to compile it, and sends the object file back
<Turl> oliv3r: got a title/link?
<oliv3r> Driver core and sysfs changes for attribute groups
<Turl> oliv3r: don't see it on lakml
<oliv3r> lkml
<Turl> nvm, it's on
<Turl> fuu The server is taking too long to respond; please wait a minute or 2 and try again.
<oliv3r> lol
<oliv3r> you know it kinda sucks though
<oliv3r> i was hoping my patch would get accepted
<Turl> luckily people mirror the stuff :P
<oliv3r> and eternal fame n stuff
<oliv3r> but no
<Turl> oliv3r: in
<Turl> time for 3.11
<oliv3r> yeah
<oliv3r> i'll finish sid now
<oliv3r> and this should un-break stuff
<Turl> :)
<Turl> oliv3r: you got a reported-by for fame and stuff
<oliv3r> yeah he needs to correct my emaila ddy :p
<Turl> oliv3r: correct what?
<Turl> you've been emailing with that, there's nothing to correct :p
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<oliv3r> ah, he didn't use my email in that mail
<oliv3r> the 'test' patch, he used my +list one
<Turl> yeah
<Turl> that's what you're mailing the list with :p
<oliv3r> i know, but when manually typing it ...
<oliv3r> I always signoff with -list
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<Turl> well, he probably didn't actively go and look at what you sign with :P
<Turl> I bet he just copied it from your report email :p
<oliv3r> brains! he should have used them
<oliv3r> i back read my mails
<oliv3r> and i clearly stated it was about binary attributes initially
<user_2> compiling stop with error: dpkg-buildpackage: error: debina/rule/ build gave error exit status 2
<user_2> debuild: datal error at line 1357
<user_2> dpkg-buildpackage -rfackeroot -D -uc failed
<user_2> :-(
<hramrach__> ofc, it won't build
<hramrach__> if it did it would be in debian
<Turl> oliv3r: I bet you wouldn't backread them all if you got the amount greg does :)
<user_2> also is wrote: no rule to make trget crome_sandbox. Stop
<hramrach__> but you should be able to simulate having tons of cubies by sending all the distcc requests to a x86 running a crosscompiler
<user_2> hramrach__, i am on pure debian 7.1
<user_2> on CB, i mena.
<user_2> i mean.
<hramrach__> yes, debain does not have chromium because it is broken
<hramrach__> to built it you would have to fix it
<user_2> difficult to me fix sometign unfixed by debian gurus...
<hramrach__> it builds on x86
<hramrach__> can't be too difficult to track the difference
<hramrach__> also there might be bug already reported, possibly even with patch
<user_2> i cant beleave, there are cromium for raspberry but not for cb!
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<buZz> you can run chromium on cb easy
<buZz> just install old debian packages ;)
<Dreadlish> as every browser
<buZz> its removed from armhf at the moment
<hglm> buzz: It could be because of a difference in "char"
<buZz> because of bugs with binutils
<buZz> it works one version up, just wait a bit ;)
<hglm> On Cortex "char" on ARM is unsigned while some applications assume it is signed.
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<oliv3r> Turl: he replied to the message and simply ignored the word 'binary'
<hglm> Looks like chromium-browser is present on Debian unstable (at least the package chromium-browser is available).
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<hramrach__> that's a dummy. you need the package chromium
<hglm> hramrach: OK, so it's not there yet.
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<buZz> hglm: it worked before and not now .. something changed that tricked the linker into doing something bad, its fixed in newer binutils
<buZz> afaik
<oliv3r> char, int and long should just die
<Turl> oliv3r: how am I going to write strings then?
<oliv3r> we have uint8, uint16 and uint32
<oliv3r> Turl: int8 :p
<hramrach__> Turl: strings should die
<oliv3r> utf-8!
<oliv3r> char should be used for characters, not for numbers
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<hramrach__> anyway, does it work with the sid binutils?
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<Turl> oliv3r: but but.. I can store the length of a string in a char! :P
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<hramrach__> no, you store it in uint32
<hramrach__> fetching a char takes forever
<user_2> in stable (wheezy) and wheezy-backporte, chromium is not avaiable
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<Turl> hramrach__: but you're wasting 3 times the memory! :p
<user_2> also in testing is not present
<oliv3r> Turl: NO
<oliv3r> Turl: actually
<oliv3r> 'fastest' int
<Turl> oliv3r: what about it?
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<drachensun> from what I can see its just random patches, none of it would seem to setup the new devices on an existing CM install without allwinner
<Turl> yeah random patches
<Turl> you probably will need some extra repos from the guy's github
<oliv3r> oh christiantroy, he did the a10 CM (got it on my tablet) but he 'quite' allwinner stuff
<oliv3r> quit*
<drachensun> yeah, I'm going to post and see if maybe has some info about building
<oliv3r> don't think he has inside info
<oliv3r> would not even be supprised if it runs some binary only kernel from some random place
<drachensun> I'm pretty sure if says so if you read the post
<oliv3r> says what so?
<drachensun> oops, anyway, I meant he said just that
<drachensun> in a post in there
<oliv3r> siad just what? :)
<drachensun> "I just use the Android kernel that came with it"* not an exact quote
<oliv3r> ahh ok
<oliv3r> yeah
<oliv3r> useless :(
<drachensun> setting up the CM10.1 build isn't useless
<drachensun> its really easy to swap in another kernel, assuming I can copy his build steps
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<oliv3r> if he didn't base it on turl's work, its duplication
<oliv3r> and where's the patch to 'fix' turls repo
<drachensun> I'm not really interested in defending someone elses work that I find useful and you dont
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<oliv3r> its wasted resources :)
<oliv3r> 'look at my little island'
<drachensun> no one else has an island with CM10.1 for the A31 on it...
<oliv3r> afaik, that's only the kernel
<oliv3r> cm for Allwinner is/should be nearly identical besides the kernel/modules
<Turl> oliv3r: well not really :p A31 has pvr
<oliv3r> oh yeah
<oliv3r> true that
<oliv3r> but you get my point!
<oliv3r> greg's stupid patch won't apply against greg's own tree
<Turl> oliv3r: lol
<oliv3r> or i'm failing at rebasing
<oliv3r> i added his driver-core.git
<oliv3r> and then i simply do a git rebase gregkh/master
<oliv3r> and it did some stuffs, but i don't even see it in the log :S
<oliv3r> there we go, checking out the branch seems to have done the trick
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<zeRez> back
<zeRez> more or less
<zeRez> :P
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<zoobab> hi
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<zoobab> got a uHost Smallart, trying to find serial, I heard about a serial over a uSD breakout board?
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