narmstrong changed the topic of #linux-amlogic to: Amlogic mainline kernel development discussion - our wiki http://linux-meson.com/ - ml linux-amlogic@lists.infradead.org - Publicly Logged on https://irclog.whitequark.org/linux-amlogic
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<gbisson> hi, i have a question regarding w400 support in mainline uboot, I see the w400 doc but can't find w400_defconfig
<gbisson> couple of remarks about w400.rst: 1) says U200 at the top instead of W400 (copy/paste) 2) the amlogic-uboot branch is wrong, g12b_w400_v1_defconfig isn't part of buildroot-openlinux-20180418
<gbisson> 2) g12b_w400_v1_defconfig is part of buildroot-openlinux-4.9-g12b-201901
<gbisson> I can offer a patch to fix the above but at this stage I'm not even sure w400 is supported
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<chewitt> I've been tinkering with W400 boards in the last week
<chewitt> gbisson: it was previously used aa the platform base for vim3/n2
<chewitt> for 2021.01 those have spawned their own board dirs, so it's a little redundant
<chewitt> but fixups are always welcome
<chewitt> see https://github.com/chewitt/u-boot/commits/2020.10-patches for a mainline defconfig that works fine with W400 devices
<gbisson> chewitt: thanks! I'll look into this
<chewitt> what board/box are you playing with?
<gbisson> amlogic dev board ;)
<chewitt> original Amlogic or something third party?
<gbisson> original
<chewitt> I think you're the first person who's seen one :)
<gbisson> A311D W400 MBX
<gbisson> well it landed on my desk, I want to play with it a little
<chewitt> I sent meson-g12b-w400.dtsi upstream earlier in the year for the kernel
<gbisson> yup I saw that
<chewitt> So far it worked with all the shitty tv boxes I have
<gbisson> so far only the vim3 uses it right?
<chewitt> vim3 has it's own dts
<chewitt> the beelink boxes I have all share it
<chewitt> and I've had reports from elsewhere that it worked
<gbisson> yes you're right, it's gtking and ugoos
<gbisson> which are using w400
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<gbisson> one question, where can I download the g12b buildroot release?
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<gbisson> it says g12b-201904
<gbisson> but I don't see any download link
<chewitt> they didn't release one since afaik
<chewitt> anything more recent requires nda's and such
<chewitt> khadas and hardkernel have 4.9 kernel trees in their GH thoo
<gbisson> I'm fine with 201904 for now I guess, but I don't see where to dl
<chewitt> mainline support should be a copy/paste exercise with the dts
<chewitt> these days about the only reason to use 4.9 would be the npu drivers, or media use (the mainline vdec needs work)
<chewitt> otherwise mainline meets or beats 4.9
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<chewitt> boot FIPs might be the only thing you'd need, but those can probably be found or created
<chewitt> as usual that's all about the RAM chips being used
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<gbisson> Ok yes, I'd obviously prefer focusing on mainline
<gbisson> Thanks for all those details!
<chewitt> n2 and the beelink fips (in a branch) are all w400_v1 devices afaik
<chewitt> vim3 has lpddr4 ram so is a bit different
<chewitt> see how far you get .. then yell
<gbisson> thanks!
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<gbisson> do you know how far is the beelink version from the original?
<chewitt> having never seen the original .. I couldn't say
<chewitt> but the schematics for their boxes are clearly based on w400 designs
<gbisson> are the schematics available?
<chewitt> I'm able to boot n2/n2+/beelinks from the same fips
<gbisson> ok yeah so it shouldn't matter, thanks
<gbisson> they're all s922x right?
<gbisson> my version is a311d which hopefully, apart from cpu freq / npu, should be the same
<chewitt> different #include in the dts
<chewitt> to get the cpu stuff
<chewitt> the n2+ is s922x "revC" which uses the same opp points as a311d
<chewitt> (although HK overclocks it)
<gbisson> of course ;)
<chewitt> I don't think the beelink schematics are public
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