#linux-sunxi on 2018-02-04 — irc logs at freenode.irclog.whitequark.org

2015-02-18 19:37 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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02:57 <wens> embed-3d: we can always fix/revert stuff before the actual release

02:57 <wens> embed-3d: that's what -rc's are for

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06:33 <icenowy[m]> jernej: bad news, the dram code seems unstable

06:34 <icenowy[m]> when I trying to boot full Linux

06:34 <icenowy[m]> (w/ systemd)

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08:06 <jernej> icenowy[m]: I believe doing full dump and comparing is the quickest way to discover the issue

08:07 <jernej> I only partially reviewed mctl_channel_init() (till it booted)

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08:44 <KotCzarny> lol, in .fr you are banned to use word 'free' in ANY name because of a trademark?

08:44 <KotCzarny> what's next?

08:44 <KotCzarny> orange? ;)

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10:22 <vpeter> I think this is valid only in France :)

10:24 <KotCzarny> trademarking popular words from other languages should give them bad karma enough to kick trolls responsible out of bussiness

10:26 <pmpp> sadly orange is a french word too ...

10:26 <KotCzarny> so no chance for free oranges in .fr?

10:27 <pmpp> indeed

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10:58 <icenowy[m]> jernej: it's already fixed

10:58 <icenowy[m]> not DRAM issue

10:58 <icenowy[m]> AXI freq too high

11:01 <jernej> ok, but you can still review my comments :)

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12:41 <adj__2> vpeter, it's also valid in Spain, some japanese restaurant trademarked "ramen" (noodles soup) or something like that, and started threatening other restaurants for using it in their names or on their shop windows

12:41 <adj__2> as "ramen" is not a generic word in spanish they were allowed to register it

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12:49 <vpeter> sw patents, words, ... what is next.

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12:57 <tkaiser> vpeter: DNA, organisms? Simply 'the worst one could imagine'? ;)

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13:15 <ElBarto> icenowy[m]: if a regulator isn't defined we don't do anything with it

13:16 <ElBarto> icenowy[m]: is there spec about what to do ?

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14:31 <fjen> i am booting 4.15 on a10 and having problems with hdmi. the screen goes black after a second of kernel messages. any way to fix that?

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16:03 <fjen> i fixed that problem by adding hdmi to the dts

16:11 <fjen> should i create a PR on github or what is the rigth way to contribute?

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16:15 <pgreco> fjen, I thihk you can find the right way here http://linux-sunxi.org/Sending_patches

16:17 <pgreco> s/thihk/think/

16:17 <fjen> okay, will do that

16:19 <wens> fjen: follow mainline linux kernel patch submission rules

16:20 <hanni76> any idea when 4.16-rc1 is available ?

16:21 <fjen> in a week

16:21 <hanni76> thx

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16:23 <wens> looks like all sunxi stuff for 4.16 is already in Linus' tree

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16:25 <pgreco> wens, too bad r40 usb phy didn't make it

16:25 <wens> it happens :(

16:25 <pgreco> yes, I'm using an alternate compatible

16:26 <pgreco> to match it to another device

16:26 <pgreco> not perfect, but it works

16:28 <willmore> Can we add that to the Topic for this channel? "not perfect, but it works"

16:30 <KotCzarny> isn't that a word play on 'good enough [tm]' linux motto?

16:31 <willmore> Yep.

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16:33 <pgreco> wens, who decides what goes into sunxi tree?

16:34 <pgreco> I've been using this line to add an alternat compatible

16:34 <pgreco> fdtput -v -t s $i /soc/phy@1c13400 compatible "allwinner,sun8i-r40-usb-phy" "allwinner,sun50i-a64-usb-phy"

16:34 <pgreco> without rebuilding everythink

16:34 <pgreco> but maybe something like that could be added temporarily

16:34 <pgreco> for 4.15 and 4.16

16:34 <wens> pgreco: the maintainers

16:36 <wens> nope. they are not compatible. the R40 has two USB hosts, while the A64 only has one

16:37 <pgreco> Yes, I know they are not the same

16:38 <pgreco> just very similar...

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16:49 <KotCzarny> hmm, any clues where uart might be? (asking on behalf of someone, not my board) https://imgur.com/wTI1Q8c

16:50 <KotCzarny> i suspect those three points in middle top

16:50 <KotCzarny> for comparison on different model: https://linux-sunxi.org/images/9/99/CYBME1S-BK_Rs232.jpg

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16:51 <willmore> KotCzarny, is that an ereader?

16:52 <willmore> Might be on the unsoldered connector on the bottom right.

16:56 <KotCzarny> yeah, bookeen muse probably

16:56 <KotCzarny> that unsoldered connector looks like touch or similar thing

16:58 <willmore> I wouldn't think touch would be that far down the board--I'd expect it to be around the middle.

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19:46 <hanni76> hi, any idea how remove endless spam in dmesg from brcmfmac ?

19:46 <hanni76> [ 8528.950387] brcmfmac: brcmf_fweh_call_event_handler: no interface object

19:46 <hanni76> [ 8528.962283] brcmfmac: brcmf_fweh_event_worker: event handler failed (72)

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21:25 <xerpi> hi! I've been doing some reverse engineering to the PSVita OS, in particular I've written an OS module that performs a soft-reset and gets baremetal core execution at kernel level so I can run my payloads bypassing the OS completely

21:26 <xerpi> after quite a bit of work, I managed to get the display running and showing stuff, and I was wondering if the PSVita SoC display controller and DSI IP are completely custom and designed specifically for the PSVita or there are other ARM SoC with the same blocks

21:28 <xerpi> the main processor consists of an ARM Cortex-A9 MPCore with a SGX543MP4+ GPU

21:28 <xerpi> (as you can see here https://wiki.henkaku.xyz/vita/Main_Processor)

21:29 <xerpi> the display controller registers (planes and colorspace engine): https://wiki.henkaku.xyz/vita/IFTU_Registers

21:29 <xerpi> and the DSI block registers: https://wiki.henkaku.xyz/vita/DSI_Registers

21:30 <xerpi> Sony calls the display engine "IFTU" (no idea what it means, something like "i-(something) format transform util" maybe?)

21:30 <xerpi> a reverse-engineered code I wrote is here: https://github.com/xerpi/vita-baremetal-sample/blob/master/src/iftu.c

21:30 <xerpi> and the DSI part: https://github.com/xerpi/vita-baremetal-sample/blob/master/src/dsi.c

21:31 <xerpi> so basically I'm wondering is any of those register addresses is familiar to you so we can identify the block

21:37 <xerpi> here's a block diagram of the SoC: https://i.imgur.com/VG7Ig1l.png

21:42 <willmore> xerpi, wrong channel?

21:43 <xerpi> willmore, not really, why?

21:43 <willmore> This channel is for discussion of the development of the mainline linux kernel for Allwinner Sun-xi SoCs.

21:43 <xerpi> some allwinner SoCs have SGX GPUs so I thought this was the closest we could get to the psvita SoC

21:44 <willmore> Very little is known about the SGX GPUs, I'm afraid.

21:44 <xerpi> if there was a channel called "sunxi-reverse-engineering" I'd ask there

21:44 <willmore> :)

21:44 <xerpi> actually SGX is currently the part I care the less about atm

21:44 <willmore> You may get some helpful responses, I would just caution you to temper your expectations. Best of luck, though.

21:45 <xerpi> what I'd like to have more info is on the display controller/video i/f and DSI blocks

21:45 <Mr__Anderson> xerpi: start here http://linux-sunxi.org/SGX544MP/ReverseEngineering

21:45 <Mr__Anderson> and more generically, here: http://linux-sunxi.org/SGX544MP

21:45 <willmore> There you go.

21:46 <xerpi> yeah seen that, thanks anyways

21:47 <willmore> Good luck.

21:47 <xerpi> does PowerVR also make the DSI or display controller blocks?

21:47 <xerpi> or do they limit themselves to the GPU?

21:48 <Mr__Anderson> GPU afaik

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21:50 <xerpi> I see

21:56 <Mr__Anderson> xerpi: also, I found this useful http://git.ti.com/graphics/

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21:57 <Mr__Anderson> it's a fairly recent integration of powervr devices with 4.x kernels

21:59 <xerpi> Mr__Anderson, awesome, thanks!

22:01 <Mr__Anderson> xerpi : welcome

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