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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<pmjdebruijn> lo
<pmjdebruijn> http://linux-meson.com/doku.php mentions that S905 should have HDMI Audio support, but my Odroid C2 doesn't with linux-5.10.4
<pmjdebruijn> I do notice that the ODROID C4 (S905X3) should have hdmi audio according to the dtsi
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<narmstrong> pmjdebruijn: this will be for 5.11, or you can take the patch http://lore.kernel.org/r/160736852893.39684.11773180672658935633.b4-ty@baylibre.com
<narmstrong> pmjdebruijn: for c4, it has audio on 5.10
<pmjdebruijn> yeah I noticed
<pmjdebruijn> ah that's very helpul
<pmjdebruijn> wrt C2 patch
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<pmjdebruijn> narmstrong: I see an ALSA device now, will test more tonight
<chewitt> I'm confident alsa devices show up, but less confident audio works due to the alsa conf
<pmjdebruijn> yeah, I'll look into that further tonight
<chewitt> btw, https://github.com/chewitt/linux/commits/amlogic-5.11.y has some panfrost related patches which aren't upstream in 5.10 (and maybe not 5.11)
<chewitt> (reading #panfrost backlog)
<chewitt> I don't run anything more complicated than Kodi (which is simple) but hardkernel picked patches from me and report improvements with them for desktop-ish things
<pmjdebruijn> ok, good to know, will take a close look tonight
<pmjdebruijn> that's in teresting, given I was having some performance issues with lima as well, and lima has similar code
<pmjdebruijn> chewitt: btw, wrt to that patch, there a Kconfig that should probably also should be adapted: select DEVFREQ_GOV_SIMPLE_ONDEMAND
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<chewitt> pmjdebruijn I'm not the best a reading code, but I'm not sure the others (PERFORMANCE etc.) are supported
<chewitt> Kodi isn't a heavy app, but I didn't see the GPU change from the minimum opp point to anything larger
<pmjdebruijn> chewitt: I meant, you've changed the code to use PERFORMANCE, but the Kconfig doesn't enforce PERFORMANCE is compiled in, so there a possiblity for the kernel not to compile with merely the code change, and not the Kconfig change
<pmjdebruijn> probably not likely in real world, but possible
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<chewitt> ahh, okay
<chewitt> the hack seems to work for Kodi .. I didn't get around to nagging panfrost folks about it yet
<chewitt> (they need a break from me)
<chewitt> (they already did much in Q4/20!)
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<pmjdebruijn> btw, to what extent is LIMA dependant on Meson specific bits for stuff like vsync?
* pmjdebruijn suspects vsync not to be working on Odroid C2
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<narmstrong> pmjdebruijn: if you see a picture on HDMI, vsync works
<pmjdebruijn> ok?
<pmjdebruijn> you mean as far as the meson parts are concerned, aside from lima
<narmstrong> don't expect LIMA to have the same perfs as the ARM blob
<pmjdebruijn> I don't
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<asdf28> chewitt: would that performance governor hack work for lima too?
<chewitt> asdf28 I didn't do much on GXBB/GXM recently so didn't look
<chewitt> poking around on a GXBB box briefly the other night the Kodi GUI was quite snappy so I suspect it's running at max alreaady
<asdf28> hmm okay
<asdf28> some weeks ago, i found out that you can set the GPU frequency for lima via the command line
<pmjdebruijn> asdf28: it does
<asdf28> but sadly, it had no effect whatsoever
<pmjdebruijn> the governor hack I mean
<asdf28> pmjdebruijn: cool... for lima? so it did make a difference for you?
<pmjdebruijn> I think so
<asdf28> i had something happen where applications ran at 1 fps
<asdf28> i don't know if it was the same for you
<asdf28> but it wasn't always like that, it happened from kernel 5.9 and onwards
<pmjdebruijn> my case wasn't that severe
<asdf28> did you just try the hack with lima?
<pmjdebruijn> yeah
<pmjdebruijn> very briefly
<asdf28> interesting that it made a difference, i'll try it too
<pmjdebruijn> my benchmarking was rather quick, so I wouldn't testify in court :)
<asdf28> btw, regarding the sound, there's a bug where you have no sound when you plug the HDMI cable in after you started the box
<pmjdebruijn> ah, good to know
<asdf28> just in case :-)
<pmjdebruijn> I've experienced something similar with USB oddly enough, though I can't reproduce that now, so I might have been a kernel bug fixed already
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<pmjdebruijn> btw, do any of the meson platforms have overscan handling on hdmi?
<pmjdebruijn> so I can have a black edge around my output?
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<pmjdebruijn> btw on my odroidc2 I'm also noticing that reboot usually doesn't work. some folks seem to think it might be related to the SD card
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