ChanServ changed the topic of #linux-sunxi to: Allwinner/sunxi development - Did you try looking at our wiki? https://linux-sunxi.org - Don't ask to ask. Just ask and wait for an answer! - This channel is logged at https://oftc.irclog.whitequark.org/linux-sunxi
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<youmukonpaku133> hey guys
<youmukonpaku133> megi: saw your work on pb626, and i own a 616 with just a board (which boots and works with fel btw!!! just need a display but GUD should cover me there), is most of the work applicable to it? ill test uart today, both devices are a13
<youmukonpaku133> also stupid question but how do i boot mainline on it
<youmukonpaku133> the pb616 is almost the same board but without touch, emmc on a proper chip, and no wifi (might be able to get it through usb tho probs)
<youmukonpaku133> nevermind im dumb booting it through sd should be easy
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<apritzel> youmukonpaku133: sunxi-fel supports loading a complete U-Boot image: "sunxi-fel uboot u-boot-sunxi-with-spl.bin"
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<youmukonpaku133> apritzel: thanks will try right now
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<youmukonpaku133> hm
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<macromorgan> dumb question, but is there a way to get the output of the DE2.0 (on an Allwinner V3S) pushed to the input of a tinydrm based SPI panel? Basically get the display engine output as a framebuffer that's used as an input to the tinydrm driver?
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<gamiee> Aren't fbtft does this?
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<libv> would it not be smarter to get a small rgb panel
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<jernej> macromorgan: it's not possible
<macromorgan> okay thank you
<jernej> well
<jernej> depends :)
<jernej> you could implement writeback functunality and then feed that back to tinydrm driver
<jernej> but I'm not sure how feasible is that
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<libv> does de2 have writeback like de1?
<libv> also, macromorgan, why do you need this?
<libv> csc?
<macromorgan> just curious if it would be useful, though given the constrained RAM environment of a V3s I'm betting not...
<libv> how big is the display, how fast is the spi link necessary
<libv> and why don't you use one of the several panel interfaces available?
<macromorgan> it's a 240x240 display, and the link at 100MHz can do 60hz
<libv> bit depth?
<macromorgan> 16bit
<macromorgan> I'm testing it with a custom tinydrm driver I wrote but I'm actually just trying to get it out the door with the generic one
<libv> what stops you from doing the work on the cpu, to the extent that you need to do a lot of work...
<libv> the display engine on the v3s seems to only have 4 overlays
<libv> do you need csc?
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<macromorgan> I'm just wondering if it will have a positive impact on drawing UIs and stuff (since the DE has multiple planes and a mixer, whereas the tinydrm just has the one). For now it doesn't matter to me though so I won't worry about it.
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<macromorgan> libv: For reference this was the device in question I was working on... https://lore.kernel.org/linux-sunxi/20230823212554.378403-1-macroalpha82@gmail.com/
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