Turl 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
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<lvrp16> willmore: thanks, with the gc or ov sensor?
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<anarsoul> mripard_: vblank is broken in sun4i drm driver on 4.15-rc2. Easy to reproduce with kmscube, after quiting kmscube it complains: https://gist.github.com/anarsoul/7c561aeb92d50bdfd408083e42c9bab3
<anarsoul> mripard_: and on subsequent kmscube runs vblank is toast: https://gist.github.com/anarsoul/52ae0675a9e7cb75a1eff4a9157f69c9
<anarsoul> I see the same issue on HDMI on pine64 and on LCD on pinebook.
<anarsoul> I tried to add drm_crtc_vblank_off() call into sun4i_crtc_atomic_disable() but it doesn't help. drm_crtc_vblank_off() races with vblank irq. If interrupt arrives earlier than driver disables it, I get the same complain that driver forgot to call drm_crtc_vblank_off()
<anarsoul> because vblank irq handler calls drm_crtc_handle_vblank() that re-enables vblank
<willmore> lvrp16, gc
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<anarsoul> jernej: hey, are you here?
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<wens> using an led that's tied to i2c/rsb based gpio with the "cpu" trigger doesn't seem to work
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<wens> mripard_: are the LED label names supposed to include the brand name or board name? seems we have both
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<mripard_> jernej: yep, or reviewed-by at least :)
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<mripard_> wens: I think it's the board: https://www.kernel.org/doc/Documentation/leds/leds-class.txt
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<wens> we have a bunch all saying "bananapi" or "orangepi"
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<plaes> mripard_: btw, this LVDS_ANA1 register seems to have functions for both channels
<plaes> on A10/A20
<smaeul> <jernej> wens: Any idea why I would get "sun4i-tcon 1c0c000.lcd-controller: Couldn't find matching engine" with this commit: https://github.com/jernejsk/linux-1/commit/6c8fa60e6785f2b46672f352e801457a91abf282
<smaeul> this is because sun4i_tcon_get_engine_by_id checks the engine id, but the id isn't set for sun8i mixers: https://github.com/jernejsk/linux-1/blob/de2_impr_for_next/drivers/gpu/drm/sun4i/sun8i_mixer.c#L356
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<wens> well, it should be set :)
<wens> who put that there :(
<mripard_> wens: 95% of the time the answer to that question is "your old self" :)
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<wens> mripard_: I'm quite sure I haven't worked on the mixer :)
<wens> smaeul: it was likely because the mixers currently supported only have one pipeline
<wens> that should be fixed though
<smaeul> would it make sense to copy sun4i_backend_of_get_id, but look at the output port of the mixer?
<wens> maybe
<wens> or, since it's the first element in the pipeline, you should just look at the index of the phandle that references it in the display-engine node
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<mripard_> anarsoul: can you test that patch http://code.bulix.org/yhjegn-240878?raw ?
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<qschulz> 0/22
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<mawe242_> Hi all. I'm running kernel 4.9.35 on an Olimex A20-SOM and having trouble with voltage scaling. When I set the cpufreq governor to powersave, the cpu frequency gets changed but the voltage of the CPU doesn't seem to change. Is there anything I need to enable in DTS to enable voltage scaling?
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<qschulz> with mainline kernel you should have these operating points with CPU freq and associated voltage
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<qschulz> (just checked, same for 4.9.35)
<mawe242_> qschulz: yes, I saw those in the dtsi file. But the voltage doesn't seem to be changed.
<mawe242_> qschulz: the AXP should regulate the cpu voltage down if I change frequency, shouldn't it?
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<mripard_> your board DTS should tell which regulator it uses for the CPU
<mripard_> there's no way to tell in a generic way
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<mripard_> tl; dr: you should use a newer kernel :)
<mawe242_> mripard_: ah, great thanks! I would rather not upgrade the kernel now... do you think it would be enough to add the @cpu0 node into my dts?
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<mawe242_> mripard_: never mind, it does work fine with that node added. thanks again.
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<icenowy[m]> oh humorous
<icenowy[m]> the 4.4 kernel for H3 released by AW doesn't support VDD-CPUX voltage adjust at all!
<icenowy[m]> oh my god
<KotCzarny> bananas rejoice!
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<apritzel> icenowy[m]: do they do it via some call to the arisc instead? Or is that not used on the H3?
<icenowy[m]> nope
<icenowy[m]> for H3 it's done by call arisc
<icenowy[m]> I mean H3 3.4
<icenowy[m]> but H3 4.4 it parses the configuration
<icenowy[m]> and drop an error if pmuic_type is not 0 (fixed)
<apritzel> icenowy[m]: so they change the frequency, but always keep the voltage at the highest possible?
<icenowy[m]> they don't care the voltage.
<icenowy[m]> keep it at the boot val
<apritzel> ... and throw away most of the possible power savings then ...
<icenowy[m]> maybe they think OTT boxes do not need power saving?
<KotCzarny> next step: fans, fans everywhere
<apritzel> KotCzarny: cheering fans? ;-)
<KotCzarny> blowing fans might be nice for some
<icenowy[m]> Let's run H6 @ 2GHz with a violent fan!
<icenowy[m]> ;-)
<KotCzarny> nono, oil aquarium [tm]
<KotCzarny> ;)
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