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<vtx_linux>
Anybody knows why R40 has both: EMAC and GMAC? Why Allwinner didn't use only GMAC?
<k4be>
emac does not need external phy
<k4be>
and probably you can have dual ethernet if you want to :P
<KotCzarny>
unless pins for both are muxed in some way :P
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<MoeIcenowy>
k4be: emac do need external phy
<MoeIcenowy>
it's historical reason
<MoeIcenowy>
R40 follows A20, and A20 evolved from A10
<MoeIcenowy>
A10 has only EMAC, and when it's evolved to A20, A20 adds GMAC
<k4be>
hmm, so i was thinking about some other chip that does not need 100M phy
<wens>
k4be: rk3328? :)
<k4be>
h3 maybe
<wens>
rk3328 has two ethernet controllers, and one has a PHY packaged together in the SoC, so you have two usable interfaces
<wens>
k4be: H3 has the option to use the GMAC with internal PHY _or_ external PHY, but not both, since there's only one controller
<k4be>
for some reason i was sure that it has gmac that needs external phy, and emac that does not
<MoeIcenowy>
because H3 has 100M internal PHY? ;-)
<vtx_linux>
Ok, thanks. I've got question regarding GMAC for r40. I've written simple bare-metal driver for r40 gmac, but unfortunately I cannot start any tx or rx dma transfers. I think I set properly GMAC registers GMAC_TX_CTL* but I see no progress in traversing any of rx or tx descriptors. Any suggestions?
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<wens>
k4be: nope
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<wens>
can anyone test 4.20-rc1 with any device that has an enabled LCD panel or RGB DAC and see if it breaks?
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<BenG83>
wens, Pinebook would work?
<BenG83>
also, lol, "So I did debate calling it 5.0, but if we all help each other, I'm sure we can count to 20."
<BenG83>
;P
<wens>
BenG83: Pinebook is DSI, not the same code path
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<wens>
I'm wondering if "drm/sun4i: tcon: fix check of tcon->panel null pointer" and "drm/sun4i: tcon: prevent tcon->panel dereference if NULL" should be picked over to fixes or not
<BenG83>
Pinebook uses RGB
<wens>
oh, then that should do
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<BenG83>
I'll try and roll a 4.20-rc1 kernel for my PB
<BenG83>
but will be a while, still doing stuff at work...
<wens>
no problem, I buried under a bunch of stuff as well
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<MoeIcenowy>
wens: Pinebook is RGB connected ANX6345 bridge
<MoeIcenowy>
RGB2EDP
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<MoeIcenowy>
wens: as you expected, ANX6345 fails on 4.20-rc1
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<MoeIcenowy>
wens: please, please pick the two patches to 4.20. They do fix bridge problems
<Xalius_Ph>
Does anyone know if the mipi-csi2 receiver in v3s is the same as in A31?
<wens>
mripard: ^
<wens>
mripard: the two patches in question were merged into drm-misc-next
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<Xalius_Ph>
another csi question, do I understand this correctly, if the CSI accepts raw8/10 and can output rgb888, it actually does the bayer-pattern interpolation for me?
<mripard>
MoeIcenowy: wens: can you send an email?
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<MoeIcenowy>
mripard: sent
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<mripard>
MoeIcenowy: thanks!
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