mnemoc changed the topic of #linux-sunxi to: Allwinner/sunxi development discussion - did you try looking at our wiki? https://linux-sunxi.org - Don't ask to ask. Just ask and wait! - https://github.com/linux-sunxi/ - Logs at http://irclog.whitequark.org/linux-sunxi
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<VIEWER> Can anyone help me to identify a part on a 7" tablet A13 Q8H V1.0 motherboard? It's picture is here http://tinypic.com/r/2wci820/8
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<VIEWER> Can anyone help me to identify a part on a 7" tablet A13 Q8H V1.0 motherboard? It's picture is here http://tinypic.com/r/2wci820/8. I got the original info from the site http://linux-sunxi.org/File:Q8h_v1.0_board_front.JPG...but I don't know where else to go to get help.
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<Turl> VIEWER: you'll probably have better luck asking that in a more hardwareish channel like #olimex
<Turl> VIEWER: looks like a generic passive/small ic to me (but I know only some really basic electronics)
<wens> i think i identified the type for that before...
<wens> hold on
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<wens> so my guess is that you want to get usb power?
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<wens> my guess is that it's either a step down regulator or a current limiter
<wens> and the 6-pin ic next to it is a step up regulator for 5v usb
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<VIEWER> Sorry, was away from the pc...I got the photo from user Hramrach...I just wanted to see if I could identify it correctly, and try solder it on and see what happens...I'm a 61 year old novice though!!
<VIEWER> Yes wens, any power at all really, as at the moment it is dead
<wens> you probably have to poke a gpio to enable the power
<wens> I suggest you email hans, as he seems to be interested in getting a usable USB host on the q8h as well
<wens> me, well, I'm not good with a soldering iron, so....
<VIEWER> Being a novice on here too, how do I contact hans, I can't see anything on the page to do so...
<VIEWER> This is his page I was looking at...http://linux-sunxi.org/User_talk:Hramrach
<wens> look around the mailing list, you should see his email
<wens> this is his github, though the email listed doesn't look right https://github.com/jwrdegoede
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<VIEWER> Forgive me for my denseness...how do I get to a mailing list for him....SORRY
<VIEWER> Too quick for me...thanks
<VIEWER> Are they one and the same person?
<wens> mailing list can be found from the wiki, on the left, there is a link for the 'community'
<VIEWER> ok thanks..will go back and look...MANY THANKS FOR YOUR ASSISTANCE!!
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<wens> mripard: could you push an updated branch with the patches you merged yesterday? (clk, defconfigs and dts from my cpufreq series)
<wens> and maybe update your github :)
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<mripard> wens: just did it
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<wens> thanks!
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<kurain> hello all
<kurain> I have tried mainline uboot-sunxi next branch, and now I have got it worked
<kurain> but there still exists on issue, how could I access the inner emmc instead of sd/mmc
<kurain> for A31 soc
<wens> nand or emmc?
<wens> they are different
<kurain> emmc
<wens> so far we don't have boards with emmc, so i suppose support is not there
<kurain> when I list mmc in uboot, it only shows the sd mmc
<kurain> or the sd card
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<kurain> wens, you mean the A31 soc platform/
<wens> u-boot is told which mmc controllers to use at compile time
<wens> what config are you using anyway? is it a supported board?
<kurain> oya, hummingbird-a31
<kurain> AFAIK, A31 detects where it boots by one switch, it could be sd card, emmc, usb, right／
<kurain> so if I want to boot it from inner emmc, I will have to build uboot with the specified mmc controller
<mripard> the A31 hummingbird has NAND, not emmc
<kurain> oh ;(
<kurain> but I am working on one board, which uses emmc
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<kurain> I just uses the dts and config provided for hummingbird
<wens> since none of the boards the main developers have uses emmc, support is not there
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<kurain> hmmm, ok, ;)
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<oliv3r> emmc works just fine however on a10/a20
<oliv3r> vector80 is using it on a product and works just like mmc without a problem
<oliv3r> kurain: ^
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<oliv3r> wens: is the 'power-button' (hooked up via the axp i'm guessing) available as a linux power button event thing that you know off? e.g. configure it via acpid i guess to trigger normal shutdown?
<wens> it goes through the input subsystem
<wens> haven't tested acpid
<wens> though acpid has an option asking it to use the input subsystem. maybe that'll work
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<oliv3r> wens: well anything is okay, as long as i can safely shutdown the system :) i only know of GUI and acpid
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<kurain> oliv3r: I am working on on board, which uses emmc, and it works well
<kurain> but now I am testing mainline uboot on my board
<kurain> I hope to burn the mainline uboot to the inner emmc
<kurain> but when using "mmc list", I can just find one device
<oliv3r> kurain: you need to define the emmc in your bootloader; e.g. u-boot
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<oliv3r> i've sent some patches ages ago to our u-boot to support this
<oliv3r> not sure if mainline u-boot picked them up yet
<kurain> oliv3r: where is your u-boot repository
<kurain> oh, but someone told me that I should use mainline sunxi-uboot branch
<oliv3r> that's why i said; i'm not sure if it was pulled upstream; i don't see why nto
<kurain> this u-boot kept by github hangs on
<kurain> oh
<kurain> if I defined the emmc in u-boot, then I can find dual mmc devices there, right／
<oliv3r> kurain: ctive arm armv7 sunxi - sunxi ICOU_Fatty_I sun7i:ICOU_FATTY_I,SPL -
<oliv3r> Active arm armv7 sunxi - sunxi Interra-3 sun7i:INTERRA3,SPL,SUNXI_GMAC,FAST_MBUS,MMC_SUNXI_SLOT=2
<oliv3r> the interra3 board uses emmc
<oliv3r> this is how it was configured on the sunxi u-boot
<kurain> ok, now I am using A31 soc, I will check if there exists some difference
<oliv3r> kurain: mainline u-boot doesn't have support for all boards i don't think; so you'll have to figure it out ;)
<oliv3r> kurain: ah, yeah, do we even have a31 memory support in our u-boot?
<oliv3r> don't think we do
<oliv3r> there's some preliminairy u-boot support for a31 last time i checked, but no DRAM controller afaik
<oliv3r> so you are doomed to use the allwinner code anyhow
<kurain> I have tested mainline sunxi uboot, it support memory
<oliv3r> really, wow, cool
<kurain> and I have opensuse boot up with its own kernel and rootfs
<kurain> with A31 hummingbird
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<oliv3r> but booting from emmc and regular sd card makes no difference
<oliv3r> the only difference being the 'slot'
<kurain> ok, great. that's what I want to know
<oliv3r> i don't know how it is handled in mainline atm
<oliv3r> but for the old sunxi u-boot, it was defining the MMC_SUNXI_SLOT= parameter, that's the key
<kurain> the memory is configured in spl of mainline uboot
<oliv3r> yeah
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<oliv3r> kurain: so figure out how to tell u-boot to use mmc slot 2 and your done :)
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<philippe_fouquet> some body know how work NWP pin (nand write protect) for A20 SoC
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<oliv3r> philippe_fouquet: what are you trying to achieve
<wens> is there any food (free or otherwise) available at fosdem?
<oliv3r> mripard: if I define pin in the dts as an 'irq', do i need to set 'interrupts = ' somewhere? or will the pinctrl sort everyhting that out
<oliv3r> wens: are you coming? :D
<wens> oliv3r: I am
<oliv3r> wens: yeah, there are food-carts, not bad
<oliv3r> wens: check sunxi ml then :p
<oliv3r> wens: but erm food-carts yeah and a cantina for pretty decent sandwitches. not cheap, but not overly expensive either
<oliv3r> for dinner, check mail ;)
<wens> i had the unfortunate experience of attending a conference with shitty to no food :(
<oliv3r> wens: coming for sunxi or just generic
<wens> mostly to meet sunxi people :)
<philippe_fouquet> oliv3r: I seen that some time on my board after a power off my nand is corrupted (losing some file)
<mripard> oliv3r: pinctrl is just about muxing
<wens> i don't see any sunxi specific talks yet (half the programs are out yet)
<mripard> it doesn't know or care what you want to do with the pin
<oliv3r> wens: oh there won't be, but i wrote a mail to the list to have a sunxi-dinner at saturday night :)
<oliv3r> mripard: ah, so still have to define the interrupt
<mripard> wens: yeah, there's cheap but decent sandwiches and belgian beers
<oliv3r> mripard: by looking at /proc/interrupt, it should read 'gic' if it is 'used properly'
<mripard> and there's some food carts
<wens> ah, ok, so i'll be hanging around IT / sysadmin talks then
<mripard> oliv3r: hmmmm what?
<oliv3r> maybe we can do a sunxi talk next year again
<mripard> what's the relation between the gic and pinctrl?
<oliv3r> well i want to have a gpio as irq capable pin using the rotary input driver
<oliv3r> so i am looking at /proc/interrupts and see that a lot of devices are using the GIC (arm interupt controller thing)
<oliv3r> except for mmc chip detect (weird) and my rotary encoder
<oliv3r> so that would indicate i set something up wrong
<wens> the chip detect uses the gpio irq
<philippe_fouquet> and the write protect’s nand is conect to a RC
<philippe_fouquet> that good for locking at power up but not for power down
<philippe_fouquet>
<wens> the '-' is because we never set the .name field for the irqchip
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<oliv3r> wens: ah ok, becuase we set .name = "irq" for the pin, right?
<oliv3r> function.name i guess is more appropiate
<wens> not that
<wens> in /proc/interrupts, that field ("GIC") tells you which interrupt controller (or irq_chip) handles that interrupt
<oliv3r> ahh okay
<wens> the name is set in struct irq_chip, which we never bothered to set in the pinctrl/gpio driver
<oliv3r> ah ok, so that could use a minor patch then?
<wens> sure
<wens> i had one some time ago as part of the wifi stuff i think
<wens> don't think i have it anymore
<wens> anyway, it's a trivial oneliner
<oliv3r> ok so this should be all that is needed to use a pin as an interrupt? http://sprunge.us/TFOM
<wens> it is, but the interrupt stuff isn't really tested i think
<wens> oh wait
<wens> so you're getting the gpio, then calling gpio_to_irq?
<wens> that should work
<oliv3r> i'm not doing anything technically; the rotary encoder driver exists allready
<oliv3r> but yes, it allready does that
<wens> you should use the gpio_in function
<wens> for the pins
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<oliv3r> wens: in the dt?
<wens> yeah, not that it really matters
<wens> gpio_to_irq overrides any pinctrl settings in the hardware
<oliv3r> ah, ok; i looked at the defines, and saw that the .name = 'irq' is eventually set
<oliv3r> ah, so i define the pin as a regular gpio_input
<oliv3r> and the gpio_to_irq functions 'remaps' the pin as an EINT
<wens> correct
<oliv3r> what settings are overridden though? the pull up works nicely
<wens> just the function
<oliv3r> i got the encoder hooked up to a scope and it looks nice
<oliv3r> ah ok
<oliv3r> and /proc/interrupts only shows _handled_ interrupts,r ight?
<wens> right
<oliv3r> ok, so the driver is not handeling the interrupts then
<oliv3r> is there any way i can check the value of the pin while the driver is claming the pin
<wens> you can look at /sys/kernel/debug/irq_domain_mapping for all the interrupts
<wens> oliv3r: in hardware? devmem :)
<oliv3r> ok that works i suppose :p
<wens> the pinctrl system doesn't read back the values
<oliv3r> irq vs gpio_in could be a make or break difference?
<oliv3r> if i unload the driver, i can just export it as a regular gpio though again via sysfs?
<wens> don't think there's a difference
<wens> pinctrl gets handled by the driver core, before you request any gpios
<oliv3r> well i can see the value in sysfs
<oliv3r> so i need to remove the thing from my dt basically; and just go the regular gpio way then
<wens> also, iirc gpio_request_* doesn't do GPIO_ACTIVE_LOW or any other flags (they are ignored)
<Gerwin_J> still in chinese
<wens> what do you want to know, it's mostly marketing language
<wens> like "Allwinner's first 64bit tablet processor, model name A64, prices as low as 5 USD, undoubtly the best tablet processor in terms of performance/cost"
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<wens> industry-leading 64bit Cortex-A53
<wens> implements H.265/H.264 video hardware decoding, 4k HDMI output, [marketing hype]
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<oliv3r> does it have, eth, sata, hdmi :p
<wens> no clue
<oliv3r> well ACTIVE_LOW or _HIGH shouldn't matter greatly to the driver
<wens> well hdmi was mentioned
<oliv3r> it might spew out crap i guess, but it should atleast still handle the IRQ
<wens> eth and sata dont matter on tablets :p
<oliv3r> as there is atleast some transistion, so the irq gets triggered
<oliv3r> wens: STB
<oliv3r> though that new intel hdmi 'stick' is a nice device if it's fully OSS (hardware decoding etc)
<oliv3r> wens: anyway, i'll take 2 steps back, configure the pins as regular GPIO inputs, and use the gpio sys stuff to see if i get pin changes
<oliv3r> if not, it might be htetranslator chip, though the pull up works, so there's something happening
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<oliv3r> anyway, from GPIO input, to single pin polled key driver, interrupt key; and back to rotary driver it is
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<oliv3r> actually, if i use gpio_in by default, unloading the driver should free the irq again I would imagine
<wens> it should
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<oliv3r> so i don't even have to change the dts for that :) nice; i can test that tomorrow then ;)
<oliv3r> hope it's something easy or obvious why it's not working
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<uhhimhere> so as far as openness is concerned what do you guys think of broadcoms videocore 4?
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<mnemoc> iirc they first finally started working in real open source support
<uhhimhere> yeah but theyve all but pulled out of the mobile SoC market
<uhhimhere> and the gpu's rtos is still a blob
<mnemoc> still sounds less-bad than anyone else (beside intel)...
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<uhhimhere> yeah but no one's gonna work on a SoC that doesnt have an active presence in the mobile scene
<uhhimhere> so for all its openness its just going to fade into obscurity
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<adj_> mnemoc, freedreno and etnaviv looks more advanced than videocore4 support
<uhhimhere> yeah and all of those work are being done on gpus that dont even have open documentation
<adj_> also, being massively used, lima is also better for an open system, in my opinion
<mnemoc> adj_: I meant vendor-supported openness
<uhhimhere> yup
<uhhimhere> theyre all hackjobs
<uhhimhere> not that theres anything wrong with that
<mnemoc> REing is probably closer to engineering than anything in the official drivers
<adj_> matrox g200/g400 is fully documented, but being a 15+ years old who cares
<adj_> rpi soc is old and not used anymore in many systems, so i'm not so exited about gpu support
<uhhimhere> just its a shame, the OSS screams for openness but when it comes along, if it isnt part of the the latest in thing, then it gets sidelined
<uhhimhere> i mean the 21664t is a dual core 1.2G VC4 SoC w/ NEON and everybody's busy RE vivante
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<adj_> uhhimhere, how many systems use the v4 opensource driver?
<uhhimhere> for the reasons mentioned above not many
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<adj_> are the last official rpi images used it?
<adj_> does
<uhhimhere> again , see answer above
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<adj_> which answer?
<uhhimhere> just its a shame, the OSS screams for openness but when it comes along, if it isnt part of the the latest in thing, then it gets sidelined
<uhhimhere> everybody wants to work on the SoC that goes into the nexus or the iphone
<adj_> i don't think is true
<uhhimhere> cant blame them
<uhhimhere> PowerVR Vivante maybe fully closed but at least there is a big market for them
<uhhimhere> well not vivante
<uhhimhere> anymore
<adj_> uhhimhere, bcm has started opening it when the soc is old, and the soc is not available easily in single qty
<adj_> vivante is not from powervr
<uhhimhere> i didnt say it was
<uhhimhere> adj_: which SoCis available in single qty?
<adj_> allwinner
<uhhimhere> link plz
<adj_> why do you think that there are tons of single board computers that uses allwinner?
<uhhimhere> where can i buy 1 allwinner unit
<adj_> how many uses the rpi soc?
<uhhimhere> 1 soc
<uhhimhere> where can i buy 1 allwinner soc
<adj_> problably from many sites in asia, america and europe
<uhhimhere> minimum 10
<adj_> you are wrong
<uhhimhere> not 1
<adj_> from 10 it's cheaper
<uhhimhere> website is wrong maybe
<uhhimhere> so
<uhhimhere> 10 !=1
<adj_> look again
<uhhimhere> ???
<uhhimhere> "and the soc is not available easily in single qty"
<uhhimhere> single quantity
<adj_> A20: 1qty = 8.50€
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<uhhimhere> Set of A10 Cortex-A8 1GHz microprocessor industrial temperature grade + AXP209 PMU
<uhhimhere> A10-AXP209
<uhhimhere> Price8.00 EUR
<uhhimhere> 10 - 49 pcs7.20 EUR
<uhhimhere> 50 - 10000 pcs6.40 EUR
<uhhimhere> Set of A10S Cortex-A8 1GHz microprocessor industrial temperature grade + AXP152 PMU
<uhhimhere> A10S-AXP152
<uhhimhere> Price12.00 EUR
<uhhimhere> 10 - 49 pcs10.80 EUR
<uhhimhere> 50 - 10000 pcs9.60 EUR
<uhhimhere> Out of stock
<uhhimhere> Set of A13 Cortex-A8 1GHz microprocessor industrial temperature grade + AXP209 PMU
<uhhimhere> A13-AXP209
<uhhimhere> Price8.00 EUR
<uhhimhere> 10 - 49 pcs7.20 EUR
<uhhimhere> 50 - 10000 pcs6.40 EUR
<uhhimhere> A10 Cortex-A8 1GHz microprocessor industrial temperature grade
<uhhimhere> A10
<uhhimhere> Price6.00 EUR
<uhhimhere> 10 - 49 pcs5.40 EUR
<uhhimhere> 50 - 10000 pcs4.80 EUR
<uhhimhere> A10S Cortex-A8 1GHz microprocessor industrial temperature grade
<uhhimhere> A10S
<uhhimhere> Price10.00 EUR
<uhhimhere> 10 - 49 pcs9.00 EUR
<uhhimhere> 50 - 10000 pcs8.00 EUR
<uhhimhere> Out of stock
<uhhimhere> A13 Cortex-A8 1GHz microprocessor industrial temperature grade
<uhhimhere> A13
<uhhimhere> Price6.00 EUR
<uhhimhere> 10 - 49 pcs5.40 EUR
<uhhimhere> 50 - 10000 pcs4.80 EUR
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<uhhimhere> A20 Cortex-A7 1GHz microprocessor industrial temperature grade
<uhhimhere> A20
<uhhimhere> Price8.50 EUR
<uhhimhere> 10 - 49 pcs7.65 EUR
<uhhimhere> 50 - 10000 pcs6.80 EUR
<uhhimhere> 10 - 49 pcs 7.65 EUR
<uhhimhere> im an idio
<uhhimhere> yup
<uhhimhere> youre right
<uhhimhere> what kind of gpu does allwinner use
<NiteHawk> uhhimhere, could you please reduce flooding the channel? this copypasting is prettry pointless
<adj_> why are you coping all the webpage?
<uhhimhere> sorry bad copy
<uhhimhere> for posterity
<uhhimhere> in case waybackmachine keels over
<uhhimhere> :P
<uhhimhere> so what kind of gpu is in allwinner
<adj_> which one?
<adj_> you can look at the linux-sunxi webpage
<adj_> what are you doing at the linux-sunxi chat?
<uhhimhere> i stumbled upon
<uhhimhere> why dont you guys design a soc with a VC4?
<adj_> how are "you"?
<adj_> linux-sunxi people are not from allwinner
<uhhimhere> im fine thank you. how are you
<adj_> just adding opensource support for allwinner socs
<uhhimhere> well you sound like youre from marketing
<linkmauve1> uhhimhere, A10 and A20 are Mali-400, A80 is PowerVR, but nobody here works for Allwinner.
<uhhimhere> oh ok
<adj_> i meant "who are _you_"?
<uhhimhere> sorry not psychic
<uhhimhere> i am me?
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<linkmauve1> uhhimhere, if you want to find people who work on a different SoC than one from Allwinner, you are not at the right place.
<uhhimhere> ok
<adj_> you said: "why dont you guys design a soc with a VC4?"
<uhhimhere> does allwinner do MIPS as well or only arm
<uhhimhere> yeah
<adj_> we don't make SOCs
<uhhimhere> SIPs
<adj_> and we don't work for allwinner
<uhhimhere> ok
<uhhimhere> well you sound like youre from marketing
<adj_> just read the webpage
<linkmauve1> uhhimhere, AFAIK only ARM, but I’m really not aware of everything they do.
<uhhimhere> ok
<adj_> do you think that i'm from marketing because i said something wrong, or because you don't know what linux-sunxi is?
<uhhimhere> "why do you think that there are tons of single board computers that uses allwinner?"
<adj_> i'm a programmer trying to port an operating system to allwinner single board computers
<uhhimhere> sounds like something out of a brochure
<uhhimhere> this looks cool
<uhhimhere> what is that board in the pic
<adj_> uhhimhere, you blamed people for sidelining the vc4 opensource driver, just because you know nothing about bcm soc
<uhhimhere> i dont blame them. thats just how it is.
<adj_> you are wrong, and you don't know that you are
<uhhimhere> lol
<adj_> nobody sidelines vc4, just do yourself a board with it and write about it in a chat that relates with it
<adj_> this is about opensource support for allwinner socs
<uhhimhere> and yet you keep going on and on about VC4
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<uhhimhere> can someone tell me which board is in that pic in the left? https://archive.fosdem.org/2014/schedule/event/arm_allwinner_sunxi_socs/
<adj_> just read it!
<uhhimhere> it doesnt say...
<uhhimhere> thnx
<adj_> it's a A20-Lime, not Lime2
<uhhimhere> does it have the cedarx vpu?
<adj_> just read
<uhhimhere> it doesnt say
<uhhimhere> again...
<adj_> have you read something from the linux-sunxi webpage?
<nove> is not cedarx vpu (cedarx is the name of the proprietaries binaries only library)
<uhhimhere> i read what NiteHawk sent me
<uhhimhere> nove: well thats odd
<adj_> why are you chatting in this channel?
<uhhimhere> because im interested in an allwinner based
<uhhimhere> board
<uhhimhere> have you read anything that ive said in the past 10 minutes?
<adj_> yes
<nove> uhhimhere: some reading for you -> http://linux-sunxi.org/CedarX
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<uhhimhere> ahhh
<adj_> you connecting here, arrogant, without even knowing what linux-sunxi is about
<uhhimhere> also incorrectly called VPU ;0
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<NiteHawk> you get the meaning of "incorrectly"?
<uhhimhere> yeah its not the coprocessor, its the libraries
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<uhhimhere> like confusing NEON for SIMD
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<uhhimhere> anyways thanks for the info
<uhhimhere> learn something new everyday
<uhhimhere> adj_: you need to take a chill pill
<uhhimhere> ;)
<adj_> you have to learn manners
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<uhhimhere> adj_: like being compelled to have the last word?
<uhhimhere> i think ill pass
<uhhimhere> ;)
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<linkmauve1> Oh, it’s possible to decode VP8 on the VE?
<linkmauve1> That’s pretty cool.
<linkmauve1> I’ve already seen H.264 working, and apparently it’s in the same SubEngine.
<nove> linkmauve1: yes, but vdpau api doesn't have(or only recently got) support for vp8
<linkmauve1> Ok.
<linkmauve1> Is there any page more up to date than http://linux-sunxi.org/CedarX/Reverse_Engineering for the current status?
<nove> no
<nove> maybe this http://linux-sunxi.org/Cedrus, for the supported codec table
<linkmauve1> Oh, indeed, it’s saying that VP8 is already supported for decoding.
<linkmauve1> In the proof of concept player.
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<oliv3r> wens: /win 2
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<oliv3r> nove: that's hugely overpriced; even if it's a23/a33, which i doubt
<nove> oliv3r: it is the new H3 soc, (in which the video engine does h65 decoding)
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<nove> markting: "and now with the advent of Allwinner H3, a full 4K OTT solution targeting at OTT box market segment priced $35 to $50"
<nove> and at the store $100
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<oliv3r> ahh, didn't know it was 'h3' thought it was a64
<oliv3r> nove: nah that's just dumb pricing; will be fixed soon ;)
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<libv> oliv3r: if no-one speaks up about a sunxi dinner, just hang around the graphics devroom around closing time
<libv> we usually tend to sweep up whoever is there and then make plans for supper
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