#linux-sunxi on 2017-09-02 — 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

00:17 <MoeIcenowy> Ntemis: maybe 4.11.7 is too old ;-)

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03:08 <smaeul> hehe, A64 NBROM is 48k because they had 120 bytes overflow of 32k

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03:10 <smaeul> A64 BROM references memory locations 0x00045a00 and 0x00045a04... I assume I'd have to RE the arisc firmware to find out what they do?

03:10 <smaeul> unless anyone recognizes them

03:16 <smaeul> nvm, figured it out

03:34 <Hao> MoeIcenowy: The uboot(branch r40-fix)for R40 needs to be seeded with boot0 ?

03:35 <Hao> refrence from http://linux-sunxi.org/Mainline_U-Boot#Determine build target

03:35 <Hao> and http://linux-sunxi.org/Bootable_SD_card#Bootloader

03:35 <Hao> it seem doesnt work...

03:41 <MoeIcenowy> Hao: nope

03:41 <MoeIcenowy> it contains SPL

03:41 <MoeIcenowy> and r40-fix now has no fix ;-)

03:41 <MoeIcenowy> you can just use mainline

03:49 <Hao> okey~

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06:16 <smaeul> on A64, LCJS bit 6 controls DMA_MODE_REG(0) for SPI boot: 0 sets it to 0x0c, 1 sets it to 0x00; bit 7 does something similar for a different boot device, but also overrides LCJS_CUSTOM_DMA_WAIT (sets it to 0 in the DMA descriptor)

06:17 <smaeul> also, BROM sets SRAM at 0x00045a04 to 0/1 depending on if LCJS bit 3 is set

06:19 <smaeul> I guess those should be documented on the wiki

06:24 <smaeul> oh, and A64 and H5 boot from SDC2/NAND in different orders (H5 has SDC2 before NAND, A64 has it after), but since they use the same pins, it doesn't really affect boot order

06:30 <smaeul> er, no, the boot order actually does change. A64 goes SDC0→NAND→eMMC→SDC2→SPI0→FEL and H5 goes SDC0→eMMC→SDC2→NAND→SPI0→FEL as far as I can tell

06:35 <MoeIcenowy> eMMC is SDC2, right?

06:46 <smaeul> there's one function that gets called twice, once with parameter 0 and then with 2, so that's clearly sd card

06:47 <smaeul> I've analyzed the entire SPI driver, so I know which that is (plus it's last)

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06:49 <smaeul> the other two are less clear: the NAND driver is from ~0x3200 to ~0x5200, which I know is the NAND driver because it references the NFDC registers

06:51 <smaeul> the two functions I have labeled "load_from_sdcard" and "load_from_emmc" are right next to each other, and call several of the same helpers

06:53 <smaeul> so, yes, eMMC and SDC2 share the controller/pins, but there's a separate function for loading from each

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07:00 <MoeIcenowy> maybe in different mode? ;-)

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15:04 <willmore> smaeul, good work!

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16:25 <jernej> swiftgeek: you need this patch to see what are you typing: https://github.com/anarsoul/u-boot-pine64/commit/bcf724bc236ec50b8da84183521de5957a362f5b

16:27 <MoeIcenowy> jernej: hello

16:27 <jernej> MoeIcenowy: Hi

16:27 <MoeIcenowy> did you see my words about R40 TCON_TOP?

16:27 <jernej> a day or two back?

16:27 <MoeIcenowy> maybe a few more days ago

16:27 <MoeIcenowy> my memory is not so clear now ;-)

16:28 <jernej> I was at work, so I just briefly read it

16:28 <jernej> let me re-read it again

16:31 <jernej> MoeIcenowy: Only those 5 lines https://irclog.whitequark.org/linux-sunxi/2017-08-30#20054146; ?

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16:33 <MoeIcenowy> yes

16:33 <MoeIcenowy> P.S. it also proved one of my assumptions on H3/5

16:33 <MoeIcenowy> the channel1 clock of TCON1 is from the TVE

16:35 <miasma> how bad is this atm? http://linux-sunxi.org/Linux_mainlining_effort#Merged_into_4.13 " dwmac-sun8i ethernet driver Unfinished due to unstable DT binding"

16:35 <jernej> I never studied R40 in detail

16:35 <jernej> miasma: Driver is still there but all DT bits were reverted

16:36 <miasma> and it won't be fixed in 4.14 or anytime soon?

16:37 <jernej> I guess it will be in next release

16:37 <jernej> It is not so much programming issue than architectural

16:38 <miasma> onboard ethernet still seemed to work in 4.13-rc7, apparently the final release won't have it?

16:39 <MoeIcenowy> montjoie: is it possible to get A64/A83T EMAC support back in 4.14?

16:39 <jernej> wait, network driver for H3 and newer SoC was never in any stable or RC kernel yet

16:39 <MoeIcenowy> (Although I hope we can also get H3/5,V3s support ;-)

16:40 <miasma> jernej: not true. i currently run 4.13-rc7 on my opi pc and it has ethernet support

16:40 <jernej> which distro?

16:40 <MoeIcenowy> jernej: it's not in any stable

16:40 <MoeIcenowy> but it appeared in some 4.13-rc

16:40 <miasma> jernej: kernel from kernel.org

16:40 <MoeIcenowy> because the DT binding is not stable

16:41 <miasma> it seems to have some issues, it gets stuck here from time to time

16:41 <MoeIcenowy> they decided to revert them for 4.13 stable

16:41 <miasma> wait few seconds and it works again

16:43 <jernej> anyway, DT bits won't be in stable

16:44 <jernej> MoeIcenowy: HDMI pink line issue is driving me crazy

16:44 <MoeIcenowy> oh the screens owned by me are too low-resolution that they cannot trigger this bug :-(

16:45 <jernej> if I put reset assert/reassert in driver, it works at first ok, but if I do resolution change, it still showsž

16:45 <jernej> it is not resolution issue

16:45 <jernej> on DVI it doesn't appear

16:45 <jernej> it must be proper HDMI screen

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16:46 <jernej> I have full HD screen which works at first and after resolution change it shows pink line on 1024x768

16:46 <MoeIcenowy> can you now check whether the bug is in dw-hdmi or in aw phy?

16:47 <jernej> all registers have same value

16:47 <jernej> in both cases, e.g when pink line is shown and when not

16:47 <MoeIcenowy> but the pink line is showed in changed 1024x768, not initial 1024x768?

16:47 <jernej> correct

16:48 <MoeIcenowy> P.S. will the re-configuration of the controller trigger this bug?

16:48 <MoeIcenowy> (configured by U-Boot then re-configured in Linux

16:48 <jernej> yes

16:48 <jernej> except if you assert reset line before deasserting

16:49 <MoeIcenowy> So I didn't trigger this bug just because my screen is in DVI mode?

16:49 <jernej> I went through all differences with BSP driver and none of the difference matter

16:49 <MoeIcenowy> P.S. I think this maybe a bug in the dw-hdmi?

16:50 <MoeIcenowy> as I think in DVI/HDMI the PHY doesn't make any difference

16:50 <jernej> may be

16:50 <jernej> I think it is older revision

16:50 <MoeIcenowy> try to reproduce it with a board with also dw-hdmi v1.32?

16:50 <jernej> what board?

16:50 <MoeIcenowy> I don't know

16:50 <MoeIcenowy> :-(

16:51 <MoeIcenowy> I only know the sunxi one in H3/A64/H5 is v1.32

16:51 <jernej> I have RK3288 board, but it has newer revision of dw-hdmi IIRC

16:52 <jernej> maybe I can try to find some contact trough maintainers of dw-hdmi

16:52 <MoeIcenowy> imx6 seems to use old version

16:52 <MoeIcenowy> https://lists.freedesktop.org/archives/dri-devel/2016-December/126097.html

16:52 <MoeIcenowy> oh this says magenta line

16:52 <MoeIcenowy> it may be interesting to read whole series

16:53 <willmore> magenta could be mistaken for pink

16:53 <jernej> nice catch

16:53 <MoeIcenowy> in fact I think the word used depends on people ;-)

16:53 * willmore is colorblind and hence does not have an opinion

16:54 <MoeIcenowy> there's no a standard that standardizes the color sense of our brain ;-)

16:54 <MoeIcenowy> so magenta = pink in this situation

16:54 <KotCzarny> pantone ;)

16:55 <KotCzarny> how about salmon?

16:55 <willmore> Agreed, but colorblindness usually mean an inability to distinguish similar colors that a 'normal' person could distinguish. So, that's a functional definition.

16:55 <MoeIcenowy> yes

16:56 <willmore> So, if 'pink' and 'magenta' are similar, it's not unexpected for a colorblind person to not be able to distinguish them when a normal person could. But, if the normal person couldn't, then it's not the fault of the colorblindness.

16:56 <lurchi__> 0xff00ff ;-)

16:57 <KotCzarny> or with cheap screen ;)

16:57 <willmore> That said, colorblind people often can distinguish between colors that normal people can't, so that complicates things.... Okay, I'll stop.

16:57 <willmore> lurchi__, but if it's a 6 bit per color channel, 0xff00ff and 0xfc00fc will look the same.

16:58 <MoeIcenowy> jernej: the most related message is https://lists.freedesktop.org/archives/dri-devel/2016-December/126053.html

16:59 <lurchi__> MoeIcenowy: dvi (single-link) is hdmi without infoframes

16:59 <MoeIcenowy> jernej: I think it's currently workarounded in dw_hdmi_clear_overflow()

17:00 <MoeIcenowy> try to add a case 0x132a in it ;-)

17:01 <jernej> thanks, I will soon

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17:01 <jernej> the other issue I have is hdmi sound

17:01 <jernej> just yesterday I found out that sound doesn't work at all if U-Boot has no video support compiled in

17:02 <jernej> something to work on

17:03 <MoeIcenowy> I think maybe the kernel didn't meet a v1.32a controller before sun8i-dw-hdmi ;-)

17:04 <MoeIcenowy> so they only dealt with v1.30a and v1.31a in i.MX

17:04 <MoeIcenowy> since the version numbers are all prefixed "v1.3" I think v1.32a should also has this bug ;-)

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17:11 <jernej> MoeIcenowy: Now the question, how many iterations? I guess we can go with high number and lower it if necessary

17:11 <jernej> I mean iterations set in dw_hdmi_clear_overflow()

17:16 <MoeIcenowy> try ;-)

17:17 <MoeIcenowy> although I think 1 may be necessary -- as v1.32a is higher than v1.31a ;-)

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17:25 <jernej> MoeIcenowy: That solved it! Big thanks!

17:27 <jernej> Although switching resolution from 1280x800 to 1920x1080 is unstable, but not if you change in some other resolution first

17:28 <jernej> but that is much less annoying than everpresent magenta line

17:35 <jernej> MoeIcenowy: One iteration seems enough

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17:47 <montjoie> MoeIcenowy: bringing back in 4.14 is my goal

17:47 <montjoie> series is ready, just need to finish cover letter

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19:17 <jernej> MoeIcenowy: That workaround also solve issue with no HDMI audio if U-Boot has no video enabled

19:17 <jernej> So audio issue is somewhere else

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