<apritzel>
tkaiser: the memory overhead for AArch64 depends quite a lot on the workload
<apritzel>
tkaiser: but JITs are subject to heavy optimizaton these days (on AArch64)
<apritzel>
tkaiser: so might be worse to update your JS engine or play with that to tune the tradeoff between speed and memory consumption
<apritzel>
might be *worth*
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<tkaiser>
apritzel: Thank you. Do you at ARM have some 'best practice' guides for this stuff? Since I fear in the 'real world' out there, many people just use what their distro maintainers or 3rd parties packaged and accept this as 'factory defaults'.
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<lepokleg>
Hi there! I've some questions belonging the AXP209 power unit. I want to change th V HOLD value. I know how to change it during runtime. However after reboot the change is lost. Is there any way to persist it? Thanks!
<petard_>
lepokleg: Maybe modify u-boot to set the register(s) on boot ?
<lepokleg>
Hi petard, thank you. Seems to be the only solution.
<lepokleg>
I hope that this point is early enough.
<plaes>
or you could check datasheet whether it's possible to somehow store the value
<petard_>
Probably the earliest you can get from SW :)
<lepokleg>
I didn't find anything in the sheet:-(
<lepokleg>
I'll try the u-boot solution
<lepokleg>
Seems to be most promising at the moment
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<MoeIcenowy>
orange pi 3 seems to won't be H5 but H6 according to steven
<MoeIcenowy>
H5 board with 2GiB DRAM comes as Orange Pi Prime
<KotCzarny>
o.O
<KotCzarny>
was h6 announced?
<MoeIcenowy>
nope
<KotCzarny>
so kind of saying 'not doing it, maybe next year'
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<MoeIcenowy>
got a copy of H6 brief
<BenG83>
:)
<KotCzarny>
ooh, show us! or at least show me ;)
<KotCzarny>
assuming its not super confidential
<MoeIcenowy>
I think briefs are never confidential
<MoeIcenowy>
but for being polite I will ask steven
<KotCzarny>
umkay
<MoeIcenowy>
he said that it shouldn't be opened now
<MoeIcenowy>
KotCzarny: if you really want it I can send you an email ;-)
<MoeIcenowy>
please give me your address via /query ;-)
<beeble>
should not be that hard to guess some features. 4x a53, mali t720, even more K for everything :)
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<MoeIcenowy>
what you guessed is right
<MoeIcenowy>
but there's things more than them
<KotCzarny>
who knows, h3 to h5 was a bit more than just more of everything
<beeble>
MoeIcenowy: that was just the executive summary. nothing else required for a powerpoint presentation :)
<lepokleg>
Regarding my question above: patching uboot works.
<lepokleg>
Thanks
<BenG83>
MoeIcenowy, you know my email address
<BenG83>
:P
<MoeIcenowy>
BenG83: you want it?
<BenG83>
;)
<MoeIcenowy>
in fact it seems tidy to upload the document to linux-sunxi.org
<MoeIcenowy>
it have no confidential marl
<MoeIcenowy>
mark
<MoeIcenowy>
oh let me just upload it without saying the source
<MoeIcenowy>
and you guys please go to "Recent Changes" to get it
<MoeIcenowy>
KotCzarny: ^
<BenG83>
I am usually not that interested in Hxx since no PMIC
<MoeIcenowy>
but H6 has something exciting
<KotCzarny>
usb3?
<KotCzarny>
pcie?
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<KotCzarny>
now that's something new
<MoeIcenowy>
KotCzarny: your first question is right.
<BenG83>
maybe there will be an Axx version...
<KotCzarny>
if they come through with overall bandwidth, h6 could be a winner
<MoeIcenowy>
BenG83: nope there's no RSB
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<silviop>
what means RBG interface ? MPIDSI ,LVDS, Parallel ?
<MoeIcenowy>
H series-only SoCs won't have RGB.
<KotCzarny>
i wonder why they omit name of 'low power cpu'
<MoeIcenowy>
KotCzarny: have you downloaded the brief?
<KotCzarny>
MoeIcenowy: brief sayd rgb interface
<KotCzarny>
yup
<MoeIcenowy>
ah-oh
<MoeIcenowy>
I saw it
<MoeIcenowy>
oh!
<MoeIcenowy>
not only usb3
<MoeIcenowy>
but also pcie!
<MoeIcenowy>
your two points are both correct!
<KotCzarny>
you seem to have skipped important parts when reading it first time :)
<MoeIcenowy>
yes
<MoeIcenowy>
as I read it on my mobile phone
<KotCzarny>
you need bigger phone, or better eyes
<MoeIcenowy>
I do not like big phones ;-)
<KotCzarny>
:)
<KotCzarny>
ephy and gmac
<MoeIcenowy>
ephy still 100Mbps
<KotCzarny>
would be nice for someone to actually add 2 ethernet interfaces at once
<MoeIcenowy>
nope I think EPHY is also using GMAC
<silviop>
To add 1Gbs in pine64 they sacrifice LVDS
<MoeIcenowy>
silviop: yes and also RGB
<silviop>
hope better muxing in this soc
<MoeIcenowy>
as LVDS/RGB is muxed with GMAC on A64
<KotCzarny>
i think someone have said ephy and gmac could be routed independently
<MoeIcenowy>
oh yes
<MoeIcenowy>
and on some SoCs (in fact only V3s) only ephy is available
<KotCzarny>
hmm, another new thing 'graphic engine', finally some 2d accel?
<MoeIcenowy>
there's no MII interface via GPIO
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<MoeIcenowy>
finally AW reached RK at chip function level
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<KotCzarny>
:)
<MoeIcenowy>
although the openness is still worse than RK
<KotCzarny>
yeah, and i feel bad for H6 in this area
<MoeIcenowy>
you know now RK mainlineing is done by mail addresses with @rock-chips.com
<KotCzarny>
quite a lot of new things
<MoeIcenowy>
KotCzarny: I also feel this
<MoeIcenowy>
we may even fail at DRAM controller
<KotCzarny>
yup, if they tout 'high performance soc', it means there might be lots of changes
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<MoeIcenowy>
and I hope AW can make this SoC as open as the RK competitors
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<KotCzarny>
btw. on the bottom 'this brief is for reference only and has no commitment, all content contained herein is subject to changes without notice'
<MoeIcenowy>
I think this kind of infomation can appear on every SoC brief ;-)
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<KotCzarny>
i wonder how having usb3 and pcie would affect max/idle power draw
<BenG83>
the transceivers are more or less the same
<BenG83>
it's just higher level IP blocks that are different
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<BenG83>
of course they have higher idle bias currents in the output stages
<BenG83>
but those are usually switched off when not transmitting
<KotCzarny>
hum
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<petard_>
One completely off-topic question. Does anyone have any idea about A20 EOL ?
<KotCzarny>
define 'eol'
<petard_>
End of life/production
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<KotCzarny>
allwinner can produce it for you if you pay
<petard_>
there was some info from part supplier that mass production is ending in about 3-4 months
<BenG83>
I was at Embedded World two weeks ago and saw two new industrial modules with A20
<BenG83>
as long as TSMC or whoever makes the chips doesnt end the process it's running on it's probably only a question how many you want to buy :)
<petard_>
hehe. yes :) As KotCzarny said you can probably get as many as you want for large enough qty
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<KotCzarny>
i wonder if other (older) socs are as successful as a20
<rellla>
finally back to the roots. VE gets back his name again.
<rellla>
Allwinner Phoenix 3.0 VE Engine :)
<miasma>
isn't h3 becoming quite common among sbcs
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<KotCzarny>
nope, h3 is already killed by h5
<MoeIcenowy>
I remembered that Olimex have bought 50k pcs of A10 after A10 is said to EOL
<KotCzarny>
so cpu gains would get eaten by sdcard
<MoeIcenowy>
it seems to be a board that worth purchasing ;-)
<KotCzarny>
board looks funny, as if something would attach to it, display maybe?
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<MoeIcenowy>
at least it's not as funny as OPi PC2 ;-)
<KotCzarny>
im podnering the pcb end which looks like a T
<wens>
i thought there was already one
<KotCzarny>
also, what is that big transister on the bottom for?
<KotCzarny>
*transistor
<MoeIcenowy>
I don't know
<KotCzarny>
i wonder if that board was made for some specific customer
<MoeIcenowy>
for OPi Prime I think this answer should be no
<miasma>
so, what should we expect from SBCs in few years as the integration proceeds further? everything included in a single chip?
<MoeIcenowy>
its picture has leaked many months ago
<miasma>
maybe 3d stacked memory?
<KotCzarny>
miasma, nah, you still need external interfaces
<miasma>
I bet 3d stacked memory would be doable
<KotCzarny>
unless everything goes wireles
<KotCzarny>
s
<miasma>
with GPUs that really saves a lot of space on the board
<beeble>
KotCzarny: thats a LDO
<MoeIcenowy>
the big transistor seems to be at least on OPi PC2
<beeble>
KotCzarny: ld1117 knockoff/compatible
<KotCzarny>
excuse my electronics noobness, what is ldo for usually?
<miasma>
KotCzarny: my point was, there isn't that much stuff installed on the boards. if memory chips can be installed to the SoC package, there's hardly any complex logic outside. PMIC, wifi, maybe nothing else
<beeble>
voltage regulator. one voltage in, lower out :)
<MoeIcenowy>
beeble: yes on it it's written AMS1117
<miasma>
e.g. the ethernet PHY can be installed inside the rj-45 connector
<KotCzarny>
beeble: thanks, so kind of dumb, one job axp
<beeble>
they will use it to generate the 3.xV
<beeble>
from the 5V input
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<MoeIcenowy>
H3 OTG support have successfully landed in linux-next ;-)
<MoeIcenowy>
but currently only for Orange Pi One/Zero/PC2 it's enabled
<MoeIcenowy>
as I have only these boards with H3/5 ;-)
<KotCzarny>
you should grab opipc
<KotCzarny>
it's a classic
<KotCzarny>
so add that to a list when you request prime or something else
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<MoeIcenowy>
and it may be the latest merged patchset by me that is commited by my @aosc.xyz mail ;-)
<KotCzarny>
you mean 'last' ?
<MoeIcenowy>
yes...
<KotCzarny>
:)
<miasma>
so the new otg code can switch between otg and a full usb2 host?
<miasma>
without sharing bw with the other usb hosts
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<MoeIcenowy>
miasma: yes
<KotCzarny>
dont expect stellar performance from otg port though
<KotCzarny>
but it's nice to have another one
<MoeIcenowy>
KotCzarny: nope, now the OTG port is a generic EHCI/OHCI controller when in host mode, not the weird MUSB host mode
<KotCzarny>
oh?
<KotCzarny>
did you do any basic benchmarks?
<MoeIcenowy>
nope, as I don'
<MoeIcenowy>
don't have such a device during development (although I have a USB HDD it's a big power consumer that cannot work on SBCs
<MoeIcenowy>
(but now for it I have a powered USB HUB to solve this ;-)
<KotCzarny>
no usb pendrive that could do 30+MB/s in sequential?
<miasma>
but the old slower mode is still needed for usb/network gadgets?
<MoeIcenowy>
KotCzarny: no.
<MoeIcenowy>
miasma: yes, but MUSB is an acceptable USB peripheral controller
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<MoeIcenowy>
(but a weird host controller
<miasma>
ok
<MoeIcenowy>
(I even had failed to connect a MUSB in gadget mode to a MUSB in host mode, and make it work
<KotCzarny>
maybe phone mem?
<MoeIcenowy>
oh let me to test it with the poewred usb hub
<miasma>
great work anyways. only ethernet more to go, then the opi pc boards I have are usable for anything
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<MoeIcenowy>
for ethernet you can use sun8i-emac patchset
<miasma>
yes, but it's not final yet :(
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<KotCzarny>
still, good work
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<MoeIcenowy>
oh upgrading GNOME broken my desktop (on my PC)
<KotCzarny>
yup
<KotCzarny>
gnome is the same evil as systemd and stuff
<MoeIcenowy>
in fact my system is doing upgrade
<KotCzarny>
(gnome2 was okayish, then it went down the drain)
<MoeIcenowy>
upgrading GNOME under GNOME is a real bad idea
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<KotCzarny>
lets hope it wont leave your pc in unstable state
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<MoeIcenowy>
in fact it has just entered unstable state
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<MoeIcenowy>
I just started an openbox to temporarily make it usable
<KotCzarny>
i'm using fluxbox (openbox clone) for many years now
<KotCzarny>
never went back to anything more resource hungry
<MoeIcenowy>
got 31.1MB/s on the OTG port of Orange Pi One
<KotCzarny>
nice
<MoeIcenowy>
and also 31.1MB/s on the Type-A port
<KotCzarny>
now run multiple terabytes test for stability? ;)