#linux-sunxi on 2021-03-24 — irc logs at freenode.irclog.whitequark.org

2018-08-03 10:18 rellla 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 - *only registered users can talk*

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01:47 <apritzel> smaeul: thanks for the prompt review, and sorry for the CI spam!

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03:22 <JuniorJPDJ> xeniter: I have device tree but I wrote it, it's also linked

03:22 <JuniorJPDJ> my device tree work was somehow created basing on fex decompiled from bin given by tablet vendor

03:24 <JuniorJPDJ> audio card is visible in OS, there's just no audio played

03:26 <JuniorJPDJ> cat /proc/asound/cards

03:26 <JuniorJPDJ> 0 [Codec ]: A31_Audio_Codec - A31 Audio Codec

03:26 <JuniorJPDJ> A31 Audio Codec

03:26 <JuniorJPDJ> 0 [Codec ]: A31_Audio_Codec - A31 Audio Codec

03:26 <JuniorJPDJ> A31 Audio Codec

03:27 <JuniorJPDJ> the only line with codec in dmesg is this:

03:27 <JuniorJPDJ> [ 0.380636] debugfs: Directory '1c22c00.codec' with parent 'A31 Audio Codec' already present!

03:28 <JuniorJPDJ> CONFIG_SND_SUN4I_CODEC is enabled

03:42 <wens> open alsa mixer and see if you have all the controls muted

03:42 <wens> (by default they all are)

04:06 <swiftgeek> i have some strange issue on H3, where it /doesn't like/ one of the monitors

04:06 <swiftgeek> my immediate guess would be wrong drive settings on that i2c

04:09 * swiftgeek is trying to compare schematics of both monitors to see if pulls are any different there

04:12 <swiftgeek> yeah the pull is 2x stronger on one that does not work

04:17 <swiftgeek> between RPi1 and OrangePi2E there is the same pull on SBC

04:17 <swiftgeek> (1k8)

04:17 <swiftgeek> (RPi1 works fine)

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04:28 <swiftgeek> not sure how /sys/class/drm/card0-HDMI-A-1/ddc/1-0050/eeprom is supposed to work

04:30 <swiftgeek> if i unplug hdmi cable it still shows old contents

04:46 <swiftgeek> oh it has its own HDMI

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04:46 <swiftgeek> err

04:46 <swiftgeek> *hdmi has its own i2c bus, outside of pinmux

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04:51 <swiftgeek> then i guess i'm out of ideas now

04:53 <swiftgeek> huh dwc_hdmi_tx indeed has i2c/DDC controller integrated

04:54 <swiftgeek> i guess i will try reading "I²C Master Registers" section and see if there is anything that could help

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04:54 <swiftgeek> also isn't RPi also using dw core here?

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04:58 <swiftgeek> maybe clock should be changed a bit

05:01 <swiftgeek> though i don't see much explanation for those "High Level Control Register"

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05:04 <swiftgeek> the best i see is like standard/fast mode switch

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05:09 <swiftgeek> but i can't locate that on H3 datasheet

05:12 <swiftgeek> would be nice to have some decent export of all registers with names as they appear in verilog as well ;/

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05:34 <swiftgeek> i guess i need to read sun8i-a83t-dw-hdmi / sun8i-a83t-hdmi-phy

05:35 <jernej> swiftgeek: RPi doesn't use dw-hdmi

05:36 <jernej> hint, try to disable display in U-Boot, that solved some HDMI detection problems in Linux for me.

05:38 <swiftgeek> well i'm getting corrupted EDID out each time on H3/OrangePi Plus 2E

05:39 <swiftgeek> on this monitor in particular, others are fine, and other SBC/lappies/desktops have no issues either

05:39 <jernej> yes, I had similar issue on OrangePi PC2 (H5) until I disabled HDMI in U-Boot

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05:59 <swiftgeek> ok i guess from sun8i_dw_hdmi.h that either registers are not directly accessible in orderly way like on imx6 https://people.freebsd.org/~gonzo/arm/iMX6-HDMI.pdf

05:59 <swiftgeek> or it's somewhere else and maybe mentioned in bsp files

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09:04 <mripard> montjoie: https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux.git/log/?h=sunxi/h6-emmc-inline-encryption

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09:06 <montjoie> mripard: I will update wiki for EMCE status with mailing list link

09:07 <montjoie> it still could be used as "some block encryption"

09:07 <montjoie> perhaps

09:08 <montjoie> do you have benched it ? perhaps it is too slow:)

09:14 <mripard> I wasn't able to read back the files' content, so how fast it could return garbage wasn't really a metric I was interested in :)

09:15 <montjoie> perhaps we could use as a rng:)

09:15 <plaes> :D

09:15 <mripard> and I'm sure it would be better garbage

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09:19 <montjoie> (french classic) the difference between good and bad rng is that a good rng produces random, a bad rng produce random also but it is a bad random

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15:23 <JuniorJPDJ> wens: none is muted, i checked it

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