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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<anarsoul|2> mripard: any plans to add support for DM_MMC and DM_USB to A64? I get warning that board support will be removed if it's not done by v2019.04
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<anarsoul|2> I see that Jagan is working on DM_USB
<anarsoul|2> but nothing so far for DM_MMC
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<catphish> yay, usb works now :)
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<wens> martinayotte: h5 emmc not working after a64 emmc DDR patch?
<wens> martinayotte: haven't found time to test it yet
<wens> mripard: the atomic_async_* callbacks in drm seem interesting
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<jaganteki> mripard: let me know if you have any inputs on this https://patchwork.kernel.org/patch/10738853/ thanks.
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<karlp> anarsoul: that's for ~all the sunxi boards isn't it? not just a64.
<fALSO> megi, now im trying to bitbang SPI
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<montjoie> just in case, I have released my helper script for testing my drivers (and also building and booting linux on lots of targets) https://github.com/montjoie/bbci any comment welcome
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<catphish> it seems i want a really specific combination of features that the H3's DE2 isn't capable of, i want to take 3-4 layers, scale them 4x larger using nearest-pixel, then alpha blend them, it's really frustrating because these features are supported independently but there's no way to combine them
<catphish> because UI channels only support blurry linear scaling
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<catphish> the only way this might work is making a horifically long display pipeline using both mixers
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<KotCzarny> can you scale after blending?
<catphish> the only way i can think to do it is like this: https://i.imgur.com/KjBIAij.png
<catphish> but it seems insane, sadly inside each mixer device, the blending happens after the scaling, and only one of the channels supports the type of scaling i want
<catphish> so the only option seems to be to blend them at lowres, then write the result back to memory, and load it into the second mixer for scaling
<catphish> there's a certain madness to this, but the only other option is to do all the blending in the cpu
<KotCzarny> ya, might be faster too
<KotCzarny> because you blend smaller data
<KotCzarny> as usual benchmarking could provide some hints
<catphish> maybe i'll try this method
<mru> if you're feeling extra masochistic, you could use the gpu
<KotCzarny> he doesnt use linux
<mru> I know
<KotCzarny> and blob is only for x/fb
<mru> hence the extra
<catphish> lol i looked at the gpu, i assumed i didn't have any chance of getting it working
<catphish> there *is* an open source driver
<KotCzarny> catphish: boot some linux on one core and let it churn as a slave
<mru> it's probably been reverse engineered enough to do what you want
<catphish> well i'll try this both-mixers thing, maybe writing the intermediate frame back to dram isn't as bad as i think
<KotCzarny> \
<catphish> all i'm doing really is using mixer1 as a coprocessor
<catphish> then doing normal graphics output / scaling with mixer0
<catphish> still not sure where my project lies on a "pointless and insane" to "useful and cool" scale, but thanks for the support :)
<mru> things can be pointless and cool at the same time
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<catphish> true, hopefully i'll have something resembling a game running on it coon
<catphish> *soon
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<anarsoul> karlp: yes
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<jernej> catphish: there is a way to blend before scaling using premultiply and sublayers, but sadly only for UI planes
<jernej> VI planes also support sublayers, but sadly no premultiplying
<jernej> so in this case top most sublayer would be completely visible, while those behind would be visible only in a part which is not covered by upper sublayer
<catphish> jernej: yeah i looked at the "sublayers" but it seems that video layers don't support opacity at all :(
<catphish> the main annoyance here is UI layers having inferior scaling
<jernej> that is fixed in DE3 :)
<jernej> I mean VI transparency
<catphish> jernej: the more i think about it, the more i'm happy with the idea of using both mixers, one for blending, and one for scaling, giving the CPU access to the intermediate image
<catphish> but it would be much more efficient if the video layer supported transparency on its sublayers
<jernej> since you are planing to write writeback driver, you can write one for Linux too :)
<jernej> yeah, I'm very curious what is the reason for limited sublayers
<catphish> alternatively, i could upgrade to a H6 if DE3 supports this better
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<catphish> i'll try the writeback idea first, essentially just using the spare mixer to replace my software blender
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<catphish> i doubt i have the skill to contribute anything useful back to linux yet :)
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<plaes> jaganteki: o/ do you have a git tree with all these u-boot wip patches?
<jaganteki> you mean DM_MMC changes
<plaes> yes
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<jernej> plaes: did you have time to test that A20 emmc clock issue?
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<martinayotte> wens: right ! with H5, I had to do this patch by adding new compatible : https://github.com/armbian/build/commit/1f34828b575c9d5dee1e9a614962ba8a3ce8537b
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<plaes> jernej: unfortunately not :(
<plaes> I have some other hdmi/dvi issue that I need to figure out :S
<jernej> plaes: unfortunately I can't test anything because I don't have A20 and nothing in particular stands out
<jernej> as I wrote in an e-mail, set parent rate flag is not even set for emmc clocks
<jernej> I guess it must be some other clock, which influences emmc
<jernej> if they have same parent, for example
<jernej> and it might be that this just unmasked issue
<plaes> possibly
<jernej> without that patch, H6 HDMI has very limited support for non-standard resolution (anything else than 720p, 1080p and 4K)
<plaes> I have one hdmi/dvi-d display that shows garbage every 6-7th boot :S
<plaes> this is where my day went :P
<plaes> hrm.. yeah.. there are no MP clocks for sun7i which allow changing parent rate :S
<plaes> jernej: btw, why do you use this: clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT ?
<plaes> ah.. nevermind...
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<tllim> @catphish, if you are interest in H6 baremetal development, I can provide a PINE64's H6 SBC to you. Just PM your address and tel (for shipping purpose).
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<catphish> tllim: thanks! i'm not at all sure whether to switch, and i also fear you're on the other side of the planet :)
<catphish> for now i'm gonna play with the DE2 writeback
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