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* vagrantc
wonders what's left with mainline to enable USB on the cubieboard4
<vagrantc>
is there something particularly different from the other A80 board (optimus) which has USB enabled?
<wens>
vagrantc: it has vbus wired in a weird way :/
<vagrantc>
hrm.
<vagrantc>
hopeless, or just old enough that there are more exciting, less frustrating things out now?
* vagrantc
is happy to see the A83T Cubietruck Plus coming along
<wens>
more or less that :)
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<aalm>
hi
<aalm>
how should usb hub be expressed in .dts, it has vbus regulator already in use, but i need the hub enabled too? :/
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<aalm>
some old .fex i found for the board has "usb_hub_vcc_en_gpio = port:PB09<1><0><default><0>", and toggling it from uboot does work, but i'd rather fix this in .dts if possible?
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<codekipp1r>
anarsoul: I am now!
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<wens>
can't seem to get h3 otg to work in peripheral mode in u-boot
<KotCzarny>
in linux it requires to load any g_* module
<KotCzarny>
maybe it's related
<wens>
the proper messages (gadget loaded, musb in gadget mode started) appear, it's just nothing's happening on the other end
<wens>
when I put it in fastboot, no USB device appears
<KotCzarny>
btw. wens, you hav bpi-r1, right? could you check what usb vbus it has? either via sys file or with multimeter
<junnie>
I need this change to make it work. Maybe it is due to board difference.
<wens>
ums as a gadget?
<wens>
argh, it's USB0_BASE
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<junnie>
Suppose so. I remember usb download gadget is needed for ums.
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<wens>
KotCzarny: I don't have it hooked up right now, so you'll have to wait until next week
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<wens>
KotCzarny: looking at the resistor values from the schematic, it should be around 5.2x V
<KotCzarny>
wens, urgh
<KotCzarny>
can you check the actual V on your board?
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<wens>
KotCzarny: drifting around 5.24 ~ 5.28
<KotCzarny>
hrrm
<KotCzarny>
i wonder why it is higher here
<wens>
bad resistor?
<KotCzarny>
which one?
<wens>
no idea, either one could be off
<wens>
R1 and R2 next to the voltage booster
<KotCzarny>
hmm, on page 7 of schematics vbus is fed directly from vcc-5v
<wens>
uhm, which micro usb port are you using to power the board? :)
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<KotCzarny>
o.o i think the dc-in one
<KotCzarny>
let me check
<wens>
the one closer to the corner is ac-in, the one closer to the RJ45 ports is usb0
<KotCzarny>
the one closer to the edge
<wens>
and you how did you get vbus? by having an otg cable plugged in? otherwise vbus should be 0
<KotCzarny>
i just measure voltage on usb port (normal one, not otg)
<wens>
ok
<KotCzarny>
and via sysfs via /sys/power/axp_pmu/vbus/voltage
<KotCzarny>
both values are similar, ie over 5.3V
<KotCzarny>
so i assume it's the right value reported
<wens>
normal usb vbus is still 5.2x on mine
<wens>
so the 5v boost is probably a bit off on yours
<KotCzarny>
on which page of schematics is vboost?
<wens>
page 12
<wens>
bottom half, there's IPSOUT to VCC-5V, with an IC in the middle
<KotCzarny>
thanks
<KotCzarny>
hmm, but its only for usb otg, no?
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<yKotCzarn>
eh.
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<yKotCzarn>
removing li-ion resulted in reboot
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<yKotCzarn>
didnt change vbus though
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<yKotCzarn>
umkay. breaking time.
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<apritzel>
so are you sure that the higher USB voltage is actually a problem? because this might just be the voltage without any load
<apritzel>
on some of my USB power supplies I measure 5.3V, without anything connected
<apritzel>
but as soon as I draw some current, this drops
<pmpp>
sure but does not change the fact that noload 5.3x is out of specs, so what to expect under load ...
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<KotCzarny>
apritzel: it's without any load now because i've disconnected anything from this board, but when ssd was connected it was the same value
<KotCzarny>
and it's not a charger that would float voltages under load, because it's a line out of pmu
<wens>
KotCzarny: all 5v on that board is provided by the booster
<KotCzarny>
uh, does it mean whole board is powered by out-of-spec voltage/
<wens>
KotCzarny: well, it's might be possible that your power supply is feeding a really high voltage
<KotCzarny>
no
<KotCzarny>
it feeds proper 5V
<wens>
KotCzarny: the pmic only switches power to ipsout. it's not regulated
<KotCzarny>
(it's adjustable and i've measured it with and without loads)
<wens>
well then I guess the booster circuit is off
<KotCzarny>
yeah, i'm in the process of dismantling my setup to measure those resistors
<KotCzarny>
thanks for confirming it's something with my board
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<HepoH>
mripard: in matter of my question about DRM, I talk about custom chip, which just use mali350. Thus I use DRM that has been implemented by 4.1 except atomic. I just wanna know -- is atomic a necessary require for the correct driver working? Sorry for my english and this delay with reply, I'm newbie in all of this stuff. Hope for your patience
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<KotCzarny>
hmm, r22 is 88k (should be 100k1%) and r26 is 152k (should be 200k1%)
<mripard>
HepoH: no, atomic is not needed
<mripard>
HepoH: but then, if it's not an Allwinner chip, maybe here is not the best place to ask ?
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<KotCzarny>
measured vcc-5V on u15, its over 5.3V
<KotCzarny>
ipsout is 4.97v on u16 tho
<KotCzarny>
could it be the case of dying d5 ?
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<KotCzarny>
yeah, 5V on gpio header is also 5.35V
<KotCzarny>
shall i just forget about battery and microusb dcin and just use gpio for powering/
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<KotCzarny>
hmm, powering through battery connector has one big downside, requires button press to power on
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<KotCzarny>
also, doesnt change the situation, vcc-5v is still 5.35v, even when powering via battery connector with 4.7v
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<wens>
still sounds more like an incorrect resistor value
<KotCzarny>
which pair? r73/75 or r26/22 ?
<KotCzarny>
75/73 are nearby u15
<KotCzarny>
R73 12.2k (13k)
<KotCzarny>
R75 80.9k (100k)
<KotCzarny>
100/13=7.7, 81/12=6.6
<KotCzarny>
can i just desolder both and u15 will pass ipsout unchanged?
<KotCzarny>
or it works differently?
<KotCzarny>
erm. s/u15/u16/
<KotCzarny>
how would that chip behave without fb connected?
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<wens>
probably bonkers
<KotCzarny>
yeah, if i knew soldering at that tiny scale i would've just ripped the u16 out and just passed ipsout into vcc-5v
<KotCzarny>
ho hum. or pass dcin into gpio pin 2
<KotCzarny>
though it might not be good idea, scratch that
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<KotCzarny>
apparently vcc-5v is only used for: usb, gpio-5v, hdmi-5v
<KotCzarny>
that's why board didnt fry itself yet
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<KotCzarny>
out of curiosity checked dram-vcc, it's fine (1.53V)
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<rodrigoaguilera>
Hello
<rodrigoaguilera>
I just changed my bananapipro a20 to a 4.15-rc2 kernel in the hope that HDMI audio is mainlined
<rodrigoaguilera>
HDMI display works great. I wanna help and specify the audio bit in the wiki. Should I just create a user?
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<rodrigoaguilera>
Thanks IgorPec . I Don't know much about armbian build process but shouldn't I have this change in the 4.15-rc2 armbian kernel I installed today?
<IgorPec>
on 4.14.y
<rodrigoaguilera>
ok, great. I will test again
<IgorPec>
we are building stable branch on 4.14.y ... it has better support than upstream
<IgorPec>
but i am not sure video driver with HDMI is adjusted for A20. It is for H3
<IgorPec>
all this stuff is WIP :(
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