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<embed-3d_>
divis1969: can I have a look at your ths driver? It might help me to rework the gpadc driver ...
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<KotCzarny>
yay.
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<dddddd>
Hi! I'm tinkering with this teres (A64) and mainline u-boot (git from first days of this month, hacking some pine defconfig). So far, I can boot the (mostly BSP I think) kernel from olimex to minimal debian userspace from the serial in the audio minijack (load, setenv, booti), everything on uSD.
<dddddd>
Anyway, my questions is about getting display on the LCD from u-boot (I don't mind later stages right now)...
<dddddd>
I configured CONFIG_VIDEO_BRIDGE=y CONFIG_VIDEO_BRIDGE_ANALOGIX_ANX6345=y CONFIG_VIDEO_LCD_MODE=y
<dddddd>
I setenv video-mode sunxi:1366x768-24@60,monitor=lcd,edid=1 but nothing happens (I expected it to just light up by booti). Tried different monitor and edid variants.
<dddddd>
I tried to compile-in debug log, but didn't get more verbosity on the serial (CONFIG_LOG=y CONFIG_MAX_LOG_LEVEL=LOGL_DEBUG CONFIG_LOG_CONSOLE=y)
<dddddd>
When is the video-mode applied? Is it too late to set it at u-boot prompt?
<dddddd>
Any suggestions? I think icenowy[m] coded the bridge. Could you (or anyone!) mentor me a bit, please?
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<dddddd>
I guess I need to change the dts a bit, because I guess the laptop is not wired just like the board. Am I on the right track?
<dddddd>
There're two dts files (one for u-boot, another for the kernel, both for BSP sadly) available... used by the official (working) image.
<dddddd>
So maybe it's just a matter of copy some LCD-related definitions to the pine files I am hacking...
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<icenowy[m]>
dddddd: yes I coded the bridge but I don't know how did olimex make the hw
<icenowy[m]>
it seems to be different from pinebook
<icenowy[m]>
for power and gpio
<dddddd>
Hello, icenowy[m]. I think there're schematics, and feel free to ask me if you think I can obtain the info myself.
<dddddd>
Please, excuse my newbiness if I say something silly (: I'm pretty new to this stuff.
<pepee>
anyone knows the state of the XR819 driver? does it work reliably as AP?
<KotCzarny>
it doesnt even work reliably as client
<KotCzarny>
and status is: driver is crap
<pepee>
I mean, the xradio driver... the open source one
<pepee>
ah :(
<pepee>
thanks KotCzarny
<KotCzarny>
even author hates it
<pepee>
I've read a bit about that, that the chip is suspected to be based on another one that does have open source drivers
<pepee>
>The driver is based on the driver for the ST CW1100/CW1200 chips
<dddddd>
Not fine, it shoutdowns during kernel booting and LCD never lights up. Back to one of my questions: when u-boot is suppose to turn it on? (after setenv? after booti? is u-boot prompt too late?)
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<anarsoul>
dddddd: in turns on LCD in ATF :)
<KotCzarny>
oh, someone made it work?
<pepee>
how well does the ST driver work with those ST chips?
<dddddd>
OK, I'll try to digest this information (I'm very new to this) and do my best. I'll keep you all posted (and I'll accept any other suggestion/tip)
<anarsoul>
these 3 lines starting with CONFIG_AXP aren't in your .config
<dddddd>
Thanks!
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<KotCzarny>
nope, but you can simply copy libc pack from h3resc and mount it onto /lib
<KotCzarny>
oops, wrong chan
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<embed-3d_>
icenowy[m]: how did you calculated the following values in your H3 ths code: .temp_offset = -1791, .temp_scale = -121, ?
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<anarsoul>
darn, with u-boot master SPL doesn't fit into 32kb on A64 :(
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<dddddd>
anarsoul, I saw a brach that removes some commands/features to gain space, AFAIU
<anarsoul>
dddddd: someone really have to add TPL support for A64
<dddddd>
anarsoul, size-fixes branch at git://git.denx.de/u-boot-sunxi
<anarsoul>
dddddd: it's u-boot fixes, not SPL
<dddddd>
oh, sorry! Made the connection of "size problems" too fast :(
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<anarsoul>
looks like something that increases spl size was added between dec 27 and jan 21
<anarsoul>
I'm too lazy to bisect that, so I'll just wait till someone fixes that :)
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<dddddd>
I think I'm missing something, anarsoul. You said that three lines about AXP are missing in """your config""". They aren't, they are in the *_defconfig. I updated the ATF sources (two new commit, one of those for the LCD). Rebuilt u-boot, but .config keeps not showing the infamous three lines...
<anarsoul>
dddddd: check your .config, not defconfig
<anarsoul>
there's no AXP driver in u-boot
<anarsoul>
you have to init it in ATF
<anarsoul>
dddddd: these 3 lines do nothing for you, there's no AXP803 driver in u-boot.
<dddddd>
Oh, so it's a confirmation and not something missing in my builds! And I don't have to expect them showing in .config.
<dddddd>
OK, so I'll keep searching for info about how to adapt the """sunxi: enable LCD power on Pinebook""" commit (of ATF) to the teres hardware, anarsoul
<dddddd>
As is (changing the comparation, obviously), does not turn on the LCD of the teres.
<apritzel>
anarsoul: which config makes SPL go too big for you?
<apritzel>
I have commit 557767ed2996, gcc 6.3.0, pine64-plus-defconfig and get 30808 bytes
<anarsoul>
apritzel: no idea
<anarsoul>
apritzel: do you have 2nd mmc enabled?
<apritzel>
the pine64 defconfig hasn't
<anarsoul>
apritzel: and honestly I don't have enough time to figure that out. u-boot from dec 27 (1602d215b595b9cf4be460101f5c8892623fe3a0) works for me. So I'd try to make eMMC working in u-boot on pinebook instead of trying to fix SPL size once again
<anarsoul>
apritzel: pine64 doesn't have emmc
<apritzel>
anarsoul: that's what I said ;-)
<apritzel>
anarsoul: I was just asking what exact configuration made SPL go bust for you
<apritzel>
because it worked for me (TM)
<apritzel>
sopine (which has eMMC) is slightly bigger (31849), but still within the limit
<anarsoul>
apritzel: .config doesn't differ much
<anarsoul>
the only suspicious part is CONFIG_MMC_VERBOSE
<anarsoul>
"aarch64-linux-gnu-ld.bfd: region `.sram' overflowed by 520 bytes"
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<anarsoul>
u-boot-spl.bin is 32360 with 20171227
<apritzel>
looks like it's CONFIG_SPL_ATF
<apritzel>
not sure why this was in there in the first place?
<anarsoul>
what do you mean? CONFIG_SPL_ATF is present in both configs
<divis1969>
embed-3d_: please take a look at https://pastebin.com/J9WU0tYR. This is a patch I'm applying on top of linux-stable master (which is used by armbian at the moment for bananapim3). It actually contains a lot of garbage: code from gpadc driver (mostly commented out), my debug message in kernel code. BTW, I've initially tried to extend gpadc, but there (was?) seems some limitation in iio driver core which did not allow to have 3
<apritzel>
anarsoul: not in pine64_plus_defconfig
<apritzel>
and it's not needed, since nobody implemented the ATF counterpart for that option so far
<anarsoul>
hmm, so it's not necessary to ATF to get loaded?
<anarsoul>
*for ATF
<apritzel>
it allows a more flexible ATF loading, and passing parameters from the SPL
<apritzel>
but IIRC it's only used by Rockchip so far
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<anarsoul>
apritzel: OK, thanks
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<apritzel>
so, yes, it would be good to find the SPL hog in the January commits, but maybe it's only SPL_ATF related
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<pepee>
well, at least I managed to get LEDE working on the orange pi zero with the old kernel + closed source driver
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<embed-3d_>
divis1969: Thanks! Well, the gpadc driver is a big messie thing... . I have right now good progess with the rework of this driver: https://github.com/embed-3d/linux/tree/h3_a83t_ths it will support up to 4 sensors, interrupts, nvme calibration cells (not fully implemented yet)
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<embed-3d_>
but this is still wip, it works right now with H3, A83T and hopefully with all the "old devices" (I only own, H3, H5, A83T devices so I'm not able to test it!!!)
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<divis1969>
embed-3d_: great, I should be more patient and wait instead of inventing a wheel :-) Will try it...
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<divis1969>
embed-3d_: BTW, I'be tested the patches for DVFS and it seems it does not affect the performance. I'm testing it with the video file conversion (ffmpeg). The sysfs' time_in_state shows the core is using not only 480MHz (most of the time 1Ghz), but the actual conversion time is still 4minutes. CPU is busy for 99%
<divis1969>
I've applied these patches on top of mainline kernel. Perhaps there are some other patches I should apply too?
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<divis1969>
And does these patches affect the online cpus? I have a single core online all the time
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<embed-3d_>
To use more cpus you need wens smp (a80) patch series (https://lkml.org/lkml/2018/1/17/133) and modify it that it works with the a83t.
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