#lima on 2019-08-24 — irc logs at freenode.irclog.whitequark.org

2019-07-03 10:24 ChanServ changed the topic of #lima to: Development channel for open source lima driver for ARM Mali4** GPUs - Kernel has landed in mainline, userspace driver is part of mesa - Logs at https://people.freedesktop.org/~cbrill/dri-log/index.php?channel=lima and https://freenode.irclog.whitequark.org/lima - Contact ARM for binary driver support!

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15:38 <anarsoul> pp control flow support is merged :)

15:39 <minicom> has lima ever been tested on x86 devices?

15:46 <minicom> I have a tablet with this SoC: https://en.wikichip.org/wiki/intel/atom_x3/x3-c3200rk

15:52 <anarsoul> minicom: I don't think so

15:52 <anarsoul> you'll also have to find a way to probe kernel driver

15:52 <anarsoul> since x86 doesn't use DT

15:53 <hellsenberg> minicom: cursed sand

15:54 <hellsenberg> intel silvermont x86 plus mali GPU... i wish I hadn't seen that

15:54 <anarsoul> why not?

15:54 <anarsoul> let's say it out loud - mali400 is way better than i915

15:55 <anarsoul> oh, it has mali450

15:55 <anarsoul> even better :)

15:55 <hellsenberg> anarsoul: even with Intel's extensive GPU documentation?

15:55 <anarsoul> hellsenberg: i915 (gen3) just sucks

15:55 <anarsoul> it's barely a GPU

15:56 <anarsoul> and they were pairing their atoms with this "GPU" for quite a while

15:56 <hellsenberg> not sure of what you mean with i915 (gen3)

15:56 <anarsoul> 3rd generation of intel graphics

15:56 <hellsenberg> https://en.wikipedia.org/wiki/List_of_Intel_graphics_processing_units#Third_generation

15:56 <anarsoul> i915 aka i945 aka GMA3100 aka GMA3150

15:57 <hellsenberg> these?

15:57 <anarsoul> yes

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15:59 <hellsenberg> those GPUs are more than a decade old..

15:59 <anarsoul> so is mali4x0

16:01 <hellsenberg> Mali-450 MP4 was announced in 2012, apparently

16:01 <anarsoul> it's essentially the same as Mali-400 which was announced in 2008

16:02 <anarsoul> just a bit beefed up: higher frequency, more pixel processors, larger plbu block size

16:03 <hellsenberg> Mali-400 MP2 vs Mali-450 MP4, the 450 is more than twice as fast

16:04 <anarsoul> hellsenberg: that's not fair comparison, better try 400MP2 vs 450MP2 or 400MP4 vs 450MP4

16:05 <hellsenberg> and still, in 2006 intel launched the gen4 GMAs

16:05 <anarsoul> yeah

16:05 <anarsoul> but they shipped gen3 for quite a while

16:06 <anarsoul> GMA3150 announced in 2010

16:07 <anarsoul> they switched to gen7 in Atoms only in 2013

16:07 <anarsoul> and ARM released Midgard in 2012 :)

16:07 <hellsenberg> well yes, x86 chips for low-power stuff are not really decent

16:08 <hellsenberg> still, I prefer the documentation availability of intel chips

16:12 <hellsenberg> anarsoul: I seem to be unable to find neither a 400MP4 nor a 450MP2

16:13 <anarsoul> IIRC rock64 has 450MP2

16:13 <hellsenberg> seems like this search engine loves mixing things up...

16:13 <anarsoul> rk3328

16:13 <hellsenberg> okay I found a 450MP4

16:13 <hellsenberg> 400MP4*

16:15 <hellsenberg> https://www.notebookcheck.net/Mali-400-MP4-vs-Mali-450-MP4_3337_5487.247598.0.html

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16:35 <anarsoul> so +61% and I'm pretty sure part of it is due to higher frequency

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16:44 <xdarklight> hellsenberg: Amlogic Meson8b (S805) has a 450MP2: https://github.com/torvalds/linux/blob/677092c39b14f4845b72cb16faab77155d8c8f6e/arch/arm/boot/dts/meson8b.dtsi#L197

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16:51 <hellsenberg> xdarklight: right, I wasn't finding any mentions of 450MP2 because search engine looked for 450MP4 and 400MP2 instead

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