rellla changed the topic of #linux-sunxi to: Allwinner/sunxi /development discussion - did you try looking at our wiki? https://linux-sunxi.org - Don't ask to ask. Just ask and wait! - https://github.com/linux-sunxi/ - Logs at http://irclog.whitequark.org/linux-sunxi - *only registered users can talk*
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<diego71> tjader: do you want to contribute a patch on the linux-sunxi mailing list? Maybe it's useful for someone else...
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<tjader> diego71: I'm looking into that, some of what I did had already been done on the sunxi tree
<tjader> It seems the proper thing to do is to rebase my work on sunxi/dt64-for-4.20 branch
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<diego71> good idea
<tjader> The kernel maintainers file does not mention the linux-sunxi list, though. Is it better to send to that list of to the proper maintainers?
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<wens> always send to what the maintainers file lists
<tjader> Okay then
<tjader> That would be you, Maxime and linux-arm-kernel, right?
<montjoie> tjader: use get_maintainer.pl
<montjoie> since it's DT file you will have additionnal people
<tjader> get_maintainer.pl added a couple of people, the devicetree mailing list and the main lkml
<montjoie> always use get_maintainer.pl and after you can add more people if needed
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<montjoie> tjader: also use checkpatch
<montjoie> it will prevent some comment
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<wens> checkpatch with --strict
<tjader> Just mailed two paths, hopefully I did everything right
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<tjader> wens: I hadn't used --strict, but just checked now and it found no problems
<tjader> two patches*
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<montjoie> tjader: your commit message is tiny
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<tjader> What more should I add?
<montjoie> this patch enable emmc on the xxx. The change was copier from the dt of xxxx
<tjader> Okay, I'll edit it on my local repo for a future v2
<tjader> Is the other message alright or should I expand it as well?
<wens> you might want to mention where the numbers came from
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<wens> and DT should match the schmatics, not just "copied snippet" :)
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<tjader> On my edited commit message I mention that the Teres-I uses the same board as the OLinuXino
<tjader> To justify using the same values
<tjader> It's lunch time for me now, but keep the comments coming and I'll reply when I get back
<tjader> Thanks for all the help
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<tjader> One thing just ocurred to me: there are three different variants of the A64-OLinuXino, shouldn't we have three device trees?
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<tjader> There's no eMMC+no wifi / eMMC + wifi / eMMC + no wifi
<tjader> Won't having emmc and wifi enabled cause problems for the devices that don't have those?
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<parco> I'm using a bananapi m2m with mainline stuff. The patch mentions the Wifi chip AP6212, but I don't see any mention of it in the dts, is it supported?
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<tnovotny> parco: we are using AP6210 (I don't know the difference comparing to AP6212) and it works on our mainlined tablet well
<parco> tnovotny: oh nice, what allwinner chip are you using?
<tnovotny> parco: A83t
<parco> is that something that needs specified in DTS?
<parco> the wifi?
<tnovotny> there is at least something regarding the power (sorry, I didn't do that support), just check this: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/sun8i-a83t-tbs-a711.dts?h=v4.19-rc4
<parco> yep i do see the power
<parco> interesting, so maybe it's setup as standard UART or something, then userspace just loads the driver for it...
<tnovotny> it is SDIO
<tnovotny> it is on &mmc1 in the dts mentioned above
<parco> Oh yea, in your dts I see the bcm4329 mentioned in mmc1
<tnovotny> yeap
<parco> thanks that helps a bunch
<tjader> Maybe doing something like it was done for pine64 and pine64+ is a good approach. Having sun50i-a64-olinuxino-1G0G.dts for the model that has neither, then sun50i-a64-olinuxino-2G16G-IND.dts includes that file and adds eMMC and then sun50i-a64-olinuxino-1G4GW.dts includes that and adds WiFi
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<parco> tjader: or for the very minor details, just have comment blocks in the device tree file
<tjader> What do you mean?
<tjader> Leave it enabled for all and mention that some boards don't have the device?
<parco> tjader: exactly, or leave the nodes commented out by default, and make the user uncomment them to enable
<parco> or find the greatest common denominator, stick that in a dtsi, and make dtb's for each of the 3 types of production boards
<tjader> I think leaving them disabled is not very user friendly, it would force every user to recompile it
<parco> s/dtb/dts
<tjader> Can leaving a non-existent device enabled cause problems?
<tjader> The simplest way would be having only one DT and having everything enabled on it
<wens> you don't have to recompile
<tjader> I don't know what kind of problems that could cause, and I don't have the boards to test
<wens> you can either have the bootloader edit the DT on the fly, or load overlays
<tjader> I only have the one that has both eMMC and Wifi
<tjader> wens: is that preferrable to having three dtbs?
<tjader> Like pine64 and pine64+
<wens> tjader: a) it leaves the peripherals on and potentially consuming power (depends on driver)
<wens> b) if someone were to accidentally short the pins (on the pine64), that would be bad
<wens> because power on those pins might be on
<tjader> Yeah, that's the kind of stuff I would be afraid of
<parco> Does anybody have a patch for `sun8i-r16-bananapi-m2m.dts` to enable the on-board Wifi module (AP6212)?
<tjader> That's why I suggested the approach with three separate device trees
<KotCzarny> tjader: read about dt overlays
<wens> for that approach, you could either have a base version .dts, and have the enhanced version include that, and enable additional peripherals
<KotCzarny> although for emmc it leaves particular problem
<wens> but for the pine it doesn't work so well because the module can be removed or replaced with some other module
<KotCzarny> so maybe enable emmc on all and wifi as overlay
<tjader> wens: base dts + two more dts for the other two variants is what I had in mind
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<tjader> The current mainline already has a problem with that, it enables the wifi on mmc1, but only one of the three variants has that device
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<tjader> wens: I think it's best to drop the emmc pach I submitted today and have a patch for split dtbs and then add the emmc to that
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<tjader> Something like this: http://paste.debian.net/1043320/
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<parco> wens: i need bluetooth for M2M (a33). From your patch, how does the driver know the bluetooth is on uart2? https://github.com/wens/linux/commit/b3df2aa9dfb48d58ee590c9686dfc0e3946de5fc
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<gnarface> what do you guys think of these bare $1 Allwinnner A13 chips they're talking about?
<gnarface> apparently someone is selling them boardless for $1
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<buZz> aint that the price they have always been?
<gnarface> oh? that's not new? i just heard about it a day or two ago when it was mentioned on slashdot
<buZz> well its a pretty old chip
<gnarface> yea it's only 1GHz but it will still boot linux
<buZz> its a cheaper version of A10 with stuff removed, like hdmi encoder
<buZz> and sata
<buZz> yeah, its a faster 1ghz then the raspi1's
<kilobyte> "in quantity $3, in very large quantity $1". And you can't even solder it by hand, need a machine.
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<buZz> well dno, you could perhaps dragsolder, with enough skill and flux
<buZz> mainly the first
<gnarface> oh? you can't solder it by hand? i had got then impression you could just stuff it in a solderless project board. nevermind
<gnarface> it seemed fun at first
<gnarface> i was envisioning buying 20 of them and wiring them together
<parco> a13 == r8, a33 == r16
<parco> i see what they did there
<gnarface> and the A10 is actually an upgrade from the A13?
<gnarface> or is it more of a tradeoff? less parts, more speed?
<DonkeyHotei> a13 is limited to half a gig of ram, too
<DonkeyHotei> a10 is not
<DonkeyHotei> both are single-core cortex-a8
<buZz> parco: there was also talk the r8 would be remixed to gr8
<parco> buZz: :)
<buZz> not kidding :P
<parco> i better see some tony the tiger then
<buZz> but that rumor came from NextThing
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<parco> what decides which protocol I should install in the kernel? The bluetooth device's capabilities (AP6210)?
<parco> H4 vs BCSP
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