<KotCzarny>
Allwinner might be different than for Allwinner A20, as I’ve been told the automotive business unit (BU4) is in charge of those new processors, while processors like A20 or A33 for consumer goods are managed by BU2
<Ke>
are the engineers completely different?
<KotCzarny>
software wise it's almost certain
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<KotCzarny>
i wonder if they are pin compatible with a40/a20
<KotCzarny>
funny they still overclock those cores over 1ghz
<Ke>
wonder if these have some extra realtime capabilities that would enable you to run hard real time controllers on some cores
<Ke>
not even sure what would be the contention points outside of memory/cache
<KotCzarny>
they plan on automotive. who knows. unless only for entertainment
<Ke>
Intel added some funny provisioning measures for telephony real time features
<Ke>
I guess the other thing is just reliability in non-household conditions
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<fangis>
hi, on my a13 tablet the nand flash suddenly complains about no free block in the free block table, I suspect the block table is corrupted, how do I replace it? I use the legacy kernel
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<icenowy[m]>
KotCzarny: I think with proper cooling 1.2GHz is not overclock
<icenowy[m]>
(if it's 40nm
<icenowy[m]>
(however I've heard that A40/60 is 28nm (still in doubt
<icenowy[m]>
P.S. the spec of A40 and R40 is only different on USB number
<KotCzarny>
icenowy: afair, 1ghz is what aw certifies those chips for
<icenowy[m]>
KotCzarny: where's the certification?
<KotCzarny>
lvrp16 mentioned it
<icenowy[m]>
I think you mean for H3
<icenowy[m]>
but H3 come without companion PMIC...
<KotCzarny>
yeah, but since arm cores (a7) are the same silicon, then without process change same limit applies
<icenowy[m]>
P.S. in BSP R40 seems to have lower voltage than H3
<KotCzarny>
with 28nm they should go to 1.5ghz
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<paulk-gagarine>
has anyone tested bluetooth support on A20 (including i2s audio)?
<paulk-gagarine>
apparently the code from https://github.com/phelum/CT_Bluetooth can be used with mainline but it uses /dev/mem directly to toggle the reset GPIO :/
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<paulk-gagarine>
and aside from dw2 issues the rk3288 is pretty well supported too
<paulk-gagarine>
dwc2*
<paulk-gagarine>
still, we lack major drivers like GPU, VPU and all the image accelerators
<KotCzarny>
isnt your job filling vpu part?
<paulk-gagarine>
and the rockchip chips have an insane number of image and 2D accelerators
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<paulk-gagarine>
KotCzarny, heh I'm working on Allwinner only so far :)
<KotCzarny>
:)
<paulk-gagarine>
but actually, many people at rockchip and google are interested in having the vpu supported by mainline
<KotCzarny>
and yeah, pity aw dropped g2d
<paulk-gagarine>
indeed
<paulk-gagarine>
well we might still get away with something by using the unused display engine pipes for writeback
<paulk-gagarine>
but the API is far from ready for that use case
<paulk-gagarine>
the idea would be to expose render devices with 2D abilities only
<paulk-gagarine>
in DRM
<paulk-gagarine>
actually on the imx6 the 2D cores are supported more or less that way by etnaviv
<paulk-gagarine>
but only the armada DDX uses them, and it's broken for various use cases
<paulk-gagarine>
so it would be good to formalize things
<paulk-gagarine>
and get it into regular DDX / Wayland
<paulk-gagarine>
anyway I'll probably end up doing a DDX with that sort of stuff for mainline
<paulk-gagarine>
if not only for displaying a video overlay with Xv
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<miasma>
paulk-gagarine: so what kind of schedule you have for the vpu stuff? first full support for everything on the older SoCs and then h3/h5 ?
<paulk-gagarine>
miasma, we're targetting 4.19 for a first version of the driver
<paulk-gagarine>
that will probably include mpeg2 and h264
<miasma>
and that will include support for ?
<miasma>
(SoCs)
<paulk-gagarine>
well, that's for the VPU driver in linux
<paulk-gagarine>
it probably covers all allwinner socs
<miasma>
i see
<paulk-gagarine>
except maybe v3/v3s that doesn't have mpeg2
<paulk-gagarine>
then userspace is another story
<paulk-gagarine>
decoding support in vaapi is not in such a bad shape
<paulk-gagarine>
but it currently only outputs to an x11 window
<paulk-gagarine>
which is slow as hell
<paulk-gagarine>
we're looking into gpu support
<miasma>
would that require using wayland
<paulk-gagarine>
yes wayland would help, but we have yet to test it
<paulk-gagarine>
that's among the many things we have left to do
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<miasma>
paulk-gagarine: so do you mean that basically any mpeg/h264 is currently unplayable with some player such as mpv/vaapi. fps much lower than 24 ?
* hanetzer
dreams of a day when vendors arent total assholes
<paulk-gagarine>
miasma, well, right now mpv is broken with our vaapi
<paulk-gagarine>
we currently only have support for mpeg2
<miasma>
hanetzer: it's not only the SoC vendors. phone manufacturers want you to buy new phones every 1-2 years
<paulk-gagarine>
and you can play 360p videos smoothly in vlc
<paulk-gagarine>
with software untiling and buffer copy
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<hanetzer>
miasma: aware, but the vendors are often dickish as hell
<miasma>
I came across some statistics like month ago. people in my country buy a new phone every 2y3m if you don't take into account the phones bought online from non-local stores. i bet there are lot of those so it's probably new phone every 18 months or so
<miasma>
so you only need 2 years of vendor support
<kilobyte>
that's the average; the long tail is... long
<miasma>
yes
<miasma>
oh and those only included smart phones. not feature/dumb phones
<kilobyte>
I for one use some android dumbphone for voice and maps only (I refuse to call a device without a keyboard "smart"), and a N900 for actual computing. N900 is a wee bit more than 2y3m old.
<kilobyte>
carrying two phones because N900 has notorious battery issues, especially with its age (got a stack of batteries, none lasts more than a few hours)
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<adj__>
KotCzarny, Olimex makes industrial grade boards, so probably they will make a40/a60 boards
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