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<wens>
beeble: see you there then :)
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<aalm>
btw. fwiw. i believe I2C IP core used in sunxis is actually mentor graphics inventra, not marvell like listed @ http://linux-sunxi.org/Used_IP_cores
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<wens>
aalm: could you elaborate?
<wens>
danielt3: linux foundation events always have video
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<willmore>
beeble, please do. Yell loudly. ;)
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<aalm>
wens, like how? it's just an observation of mine, and kind-of-related to the 'x-compatibles' i saw url about.
<wens>
aalm: like, what tipped you off? afaik allwinner docs don't mention vendors for any of the hardware blocks
<wens>
and they never actually confirm it even if we ask them
<MoeIcenowy>
why is there only two known users of the IP core?
<aalm>
could be my previous search history, but for me the 'proof' was in top5 links for "Mentor_Graphics_MI2CV.pdf"
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<asyring>
hmm thats compilcated. Its easier on an A13 right?
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<wens>
the A10/A20 DAC can do true VGA or component video (maybe HD resolutions)
<wens>
A10s/A13 can only do CVBS
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<MoeIcenowy>
H3/5 seems to be also only CVBS-capabl
<MoeIcenowy>
but R40 seems to be able to do VGA/component
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<wens>
newer TVs don't even have component any more, some don't have VGA either
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<MoeIcenowy>
maybe some can even drop CVBS...
<MoeIcenowy>
CVBS is quite old...
<KotCzarny>
cvbs is used in russia
<KotCzarny>
and brazil
<MoeIcenowy>
CVBS is used all around the world
<MoeIcenowy>
but it's quite old
<pmpp>
my mom uses cvbs !
<KotCzarny>
old doesnt mean obsolete
<MoeIcenowy>
yes in my family CVBS used to be used
<MoeIcenowy>
but now after the STT box is updated HDMI is used instead as CVBS cannot transport the HDTV ;-)
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<KotCzarny>
well, you can use opi3 as a hdmi2cvbs transcoder ;)
<MoeIcenowy>
I wonder how do it do HDMI IN ;-)
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<JohnDoe_71Rus>
for my cb2 i use hdmi->d-sub and cvbs to TV
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<asyring>
I have an old CRT projector which makes full-HD but has only component or VGA. The Cubietruck makes a perfect player for it.
<wens>
sigh, linux (or X11) still doesn't do multiple DPI settings :/
<wens>
do I have to use windows to do my presentation at an open source conference? :p
<MoeIcenowy>
wens: maybe you can lower your high DPI screen's resolution ;-)
<wens>
MoeIcenowy: that's kind of a waste of the extra pixels :p
<mripard>
wens: X doesn't support it
<mripard>
wayland does
<mripard>
at least on DE's that properly support it
<wens>
great. I'll wait for Ubuntu 18.04 then
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<mripard>
ubuntu 17.10 should be enough
<mripard>
it has a recent enough gnome to support it properly
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<wens>
a task for another day
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<MoeIcenowy>
mripard: have you tested the LVDS patchset on anything other than A83T?
<MoeIcenowy>
I think BPi M2M wires out LVDS pins on GPIO
<wens>
should be the same across all socs
<MoeIcenowy>
I have an A33 tablet with LVDS screen, but it do not have proper debug UART
<MoeIcenowy>
(it seems that all A23/A33 tablets suffer from the same problem
<MoeIcenowy>
P.S. why don't we use panel-dpi for RGB panels?
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<wens>
panel-dpi driver only exists for omap
<wens>
I do wonder why we use panel-simple with all the timings in the driver for DPI ones, while we have the timings in the DT for LVDS ones :/
<MoeIcenowy>
wens: I also wonder the same thing ;-)
<MoeIcenowy>
but I've heard that panel-simple maintainer do not like timings in DT
<wens>
I know
<wens>
it's the DRM folks
<MoeIcenowy>
P.S. it seems that pl11x driver also supports panel-dpi
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<wens>
I would really love not having to come up with a compatible for whatever cheap panels are found in cheap tablets :|
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<wens>
interesting, if the kernel has wireless extension compatibility built in for nl80211, then wpasupplicant can't use the nl80211 driver with brcmfmac
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<MoeIcenowy>
do you mean cfg80211?
<wens>
right. wireless extensions compatibility for cfg80211
<wens>
finally got an a64 board up and running
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<marble_visions_>
hi all, someone here said 2d for X works just fine with mainline and fbturbo, but the wiki says otherwise: http://linux-sunxi.org/Xorg
<marble_visions_>
or maybe neon support means 2d is supported?
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<buZz>
fbturbo uses neon for 2d, yeah
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<L29Ah>
have anyone succeeded using kexec on mainline on allwinner?
<L29Ah>
man suggests it doesn't know anything about dt :/
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<mripard>
MoeIcenowy: no, it's the only device that has an LVDS screen that I have
<mripard>
plaes: has one with an A10, and his code was pretty close
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<plaes>
MoeIcenowy: yeah, I have A10 device with LVDS (+ bunch of laptop screens I have salvaged, but have to figure out how to hook them up first)
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<MoeIcenowy>
mripard: have you checked my comments on the mixer UI patch?
<KotCzarny>
plaes: there are connector-to-wires adapters
<KotCzarny>
20/30/40 pin
<mripard>
MoeIcenowy: yeah, I got tricked by the structure comments, you're right
<mripard>
I'll change it in the next iteration
<MoeIcenowy>
what comment tricked you?
<MoeIcenowy>
in BSP or in mainline?
<MoeIcenowy>
if something in mainline is confusing, just fix it ;-)
<MoeIcenowy>
or tell me to fix it
<mripard>
in the BSP
<mripard>
so nothing you can fix, really :)
<MoeIcenowy>
P.S. how to deal with the mixer0 v. mixer1 problem?
<MoeIcenowy>
It seems that VEP (some video postprocessing) is only available on mixer0
<MoeIcenowy>
and smart backlight is only available on mixer0's of tablet SoCs (OTT SoCs of course don't care backlight ;-)
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<marble_visions_>
buZz: thanks :)
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<buZz>
welcome
<buZz>
for what? :D
<buZz>
oh, right :D
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<marble_visions_>
buZz: yep
<buZz>
:D
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<miasma>
should the audio drivers expose a stereo sound chip on h3?
<miasma>
i got two mono sound sinks
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<marble_visions_>
does github/ntc/CHIP-linux include all of the "patches" in github/ntc/linux? what's the deal with the two repos? do they make changes in linux and pull those into chip-linux? even then, why would they need two repos?
<marble_visions_>
it seems that their CHIP-buildroot looks for CHIP-linux, but the "linux" repo way more active
* marble_visions_
should probably ask in the chip channels
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<gnarface>
miasma: i dunno, but my pinebook has two mics, so i think it's not unreasonable
<miasma>
e.g. the opi pc has a 3 pin stereo audio jack. i'd expect stereo sound
<gnarface>
oh
<gnarface>
yea i would too
<gnarface>
the pinebook has a 4-pin audio jack *and* two mic inputs
<gnarface>
marble_visions_: there's also mali gpu driver forks floating around. i dunno which one you need though - i think it may be hardware specific.
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<marble_visions_>
gnarface: from the wiki and github projects i'm getting that the correct build order is libUMP -> sunxi-mali -> ???
<marble_visions_>
oh, right, and the out-of-tree kernel mali code, correct.
<gnarface>
yea, i think it works like any other mesa card, it's just not in-tree yet
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<gnarface>
i haven't made it that far myself, i only just got the display working
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<marble_visions_>
gnarface: good to know :)
<marble_visions_>
alright, so the order should be chip-mali (that's the out of tree kernel driver) -> libUMP -> sunxi-mali -> ???
<gnarface>
not sure it actually matters, but i think so
<gnarface>
or maybe the last two steps have to be swapped if one is a build dependency for the other
<gnarface>
but it does make sense that the kernel would have to be built first
<gnarface>
maybe even loaded, with headers present
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<marble_visions_>
dunno, i'm just following the readme's
<plaes>
hmm.. wait.. I have actually 'Allwinner V3' (not V3s)
<miasma>
but I'm using this h3 board for multiroom audio
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<wens>
I don't remember which board I had pulseaudio installed on :|
<wens>
otherwise I could do some checking
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<danielt3>
wens: if A13 can do only CVBS, why there is a VGA port in the board I have? Or is it a hack around the composite signal to convert to VGA?
<Pe3ucTop>
danielt3: A13 can output digital RGB data, with synchrosignals. NextThing use those with simple resistors to make Analog VGA signal..
<Pe3ucTop>
may be you have similar implementation on your board ??
<danielt3>
I guess I have
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<willmore>
plaes, I am interested in using salvaged laptop screens as well.
<danielt3>
but why an analog VGA signal is needed? isn't the VGA monitor digital? or is the signal sampled and ADC'ed when it enter the monitor?
<gnarface>
danielt3: VGA is actually analog, believe it or not.
<gnarface>
danielt3: DVI is digital
<danielt3>
that is something
<danielt3>
so, the A13 can generate the digital VGA components but we need a DAC network to make them work with the monitor?
<gnarface>
i don't know anything about the A13 but i'm guessing that is accurate
<danielt3>
as far as I know, there are RGBHV pins on A13 and they are probably hooked to the DAC network (which I'm guessing is a resistor ladder)
<gnarface>
theoretically at least, you could make a digital signal to go to dvi or hdmi instead and not need to convert that to analog, but remember VGA was designed for CRT, which was designed for analog data broadcasts before digital was actually a thing
<gnarface>
(i don't know if the A13 has a way to hook that up mind you, i don't know the hardware)
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<adj__2>
danielt3, I think that Olimex also does a R-2R ladder Analog to Digital conversion of A13 digital RGB to VGA (using some amplification after it)
<adj__2>
you can look at Olinuxino A13 schematics
<danielt3>
ok
<danielt3>
yeah, they should provide some insight
<danielt3>
thank you
<gnarface>
so it converts it to analog then back to digital? weird...
<adj__2>
gnarface, no, SOC signals are not strong enough to drive VGA
<adj__2>
you need a driver
<gnarface>
oh
<danielt3>
SoCs typically driven by 3.3V interfaces (or 1.8V in some cases)
<danielt3>
unlikely they can drain enough power to power anything themselves
<gnarface>
hmm, i see
<adj__2>
danielt3, gnarface: I looked at the schematics and Olimex uses SN74ALVC244 drivers
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<adj__2>
see you
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<mripard>
Pe3ucTop: there's no support for the ov5640 in parallel (yet)
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<willmore>
I have a bunch of VGA DAC chips. Can these boards drive one of those?
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<montjoie>
I seek someone with a bpim2+ which could confirme the address of the etherney PHY (1 or 7)
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<martinayotte>
montjoie : I've a bpim2+ with Armbian Next 4.13.0, what/how should look to help you ?
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<montjoie>
martinayotte: try to change in DT the reg = <0> to 1 or 7
<montjoie>
martinayotte: warning: loss of ethernet if it is not the right value
<montjoie>
probably 7 is the right
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<beeble>
mii info in u-boot tells you what phy ids it found
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<martinayotte>
montjoie : I've just put 7, and my board doesn't boot any more ... coincidence ? since it was from eMMC, I need to prepare an emergency SDCard to boot.
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<martinayotte>
beeble : doing "mii info" in u-boot gave me a flood of "NULL device name! No such device: <NULL>"
<beeble>
martinayotte: so i guess your u-boot does not have ethernet support. sorry
<martinayotte>
Probably not in good shape at least ... 2017.07 at that time ... I'm doing new build since I don't find my old image. This means new build will have 2017.09 along with 4.13.8
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