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<Pinchiukas>
If I put a SD card in my A20 device, will it boot from that instead of the on-board memory?
<KotCzarny>
yes
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<Pinchiukas>
KotCzarny: so I guess I don't even need to fiddle with uboot?
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<KotCzarny>
uboot is loaded from sdcard
<damex>
is there some <other> channel that i can ask about linux/device-tree? want to spin up my octeon3 board (works though) and it is not related to #sunxi
<Pinchiukas>
KotCzarny: so uboot that's somewhere on-chip chainloads uboot that's on the SD card?
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<plaes>
has anyone added VGA output to A20-based devices?
<wens>
nope
<wens>
plaes: I had some changes for the device tree and bindings, if you want to take a look, though no driver code
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<wens>
plaes: mainline doesn't support the TVE on the A20, so just adding an overlay doesn't quite get there
<wens>
armbian seems to be carrying a whole lot of patches for sunxi though
<plaes>
yeah, there could be something extra
<plaes>
I'll dig into it today...
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<plaes>
btw, could it have been just simplefb that was carried over from u-boot?
<Pinchiukas>
If SD card goes before the internal storage in uboot, why do I need to have uboot in the SD card as well?
<plaes>
what's your internal storage?
<plaes>
anyway, if your internal storage is supported by bootrom, then you don't need u-boot on SDcard
<wens>
plaes: possible :p
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<Pinchiukas>
plaes: just what I have on the A20 device - where the stock Android is located.
<KotCzarny>
its like asking why you have to have grub on hdd2 when you select the drive in bios to be bootable (even if you have hdd1 with uboot as well)
<Pinchiukas>
I think if uboot as being grub as opposed to the bios. :)
<KotCzarny>
anyway, uboot of android is old and not easily configurable
<KotCzarny>
thats why its better to have one on sdcard too
<Pinchiukas>
Well still it's good news that I don't have to solder on a UART or stuff like that. :)
<KotCzarny>
uart comes VERY handy
<Pinchiukas>
Yeah I know but it's such a huge PITA to get one for me. :/
<KotCzarny>
create adapter with pogo pins
<KotCzarny>
:)
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<Pinchiukas>
I don't suppose there is a way so that I wouldn't have to hold it?
<KotCzarny>
depends on your skills
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<Pinchiukas>
Close to non-existent. I don't even own a soldering iron ffs!
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<Pinchiukas>
Yeah I fully expect that of myself. :D
<Pinchiukas>
But I mean... I have a card reader in the device itself. Or will I not be able to use it?
<KotCzarny>
up to you, but after 10 or 20 swaps of the sdcard to pc to write new uboot because previous one didnt work as expected, you will know what i mean
<Pinchiukas>
Ok fair enough, but how would it be different with a USB storage device?
* karlp
hugs felboot
<KotCzarny>
because then, you send uboot via usb
<KotCzarny>
no writing needed (apart from one time fel-trigger sdcard)
<Pinchiukas>
Don't I unplug a USB stick or a HDD from the device, plug it into my laptop and do pretty much the same as with an SD card?
<KotCzarny>
nope
<KotCzarny>
different direction
<Pinchiukas>
Or were you thinking about using the UART?
<KotCzarny>
pc will act as a host
<KotCzarny>
device will act as a device
<Pinchiukas>
Oh, I had no idea that was possbile! I have no idea how that works.
<KotCzarny>
ever heard about usb otg?
<mps>
netboot
<Pinchiukas>
Yeah, I think I even have an adapter somewhere.
<KotCzarny>
mps: i storngly suspect he has some tablet without eth port
<mps>
uh
<mps>
I thought it is SBC (board)
<Pinchiukas>
I have an Android TV box with A20.
<KotCzarny>
but for netboot he still needs to have prepared sdcard
<Pinchiukas>
So wait, now you're talking about yet another option - netboot. I'm already confused enough. :)
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<KotCzarny>
for starters get some a20 image and check how far it boots, might be good enough for further tweaking
<Pinchiukas>
That's a good idea. Where do I get me one of those?
<KotCzarny>
armbian.com ?
<KotCzarny>
darn, they no longer have 'sort by soc' feature
<KotCzarny>
that fex thing has all information about pins, devices included etc
<Pinchiukas>
I don't suppose there is a way to serve that image to my device from a Mac?
<KotCzarny>
probably there is
<Pinchiukas>
My device has a single button. When I press it the LED goes out and the screen goes blank. But since after pressing it again I get the screen back instantly, it's not a power-off/reset button. Can it be that FEL button thing?
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<hexdump0815>
jernej: i just built v5.9 for my h6 based on the megous tree and added your ac200 driver and now get "ac200-ephy ac200-ephy: Unable to find calibration data!" now and then - eth is working fine - any idea? where can i find the latest version of the ac200 code?
<hexdump0815>
jernej: with 5.6 i did not get this error
<hexdump0815>
megi: at least the message is gone that way :) - its an eachlink h6 mini tv box btw."
<megi>
I think your change auto-switches RTC clk source to internal RC oscillator, can you measure RTC precision after your patch is applied?
<hexdump0815>
how do i measure this?
<megi>
just do hwclock -s now and after 10 minutes :)
<megi>
and and observe how much system clock changes
<megi>
or just hwclock -r
<megi>
and compare with wall clock
<megi>
it will probaby go off by ~10%
<hexdump0815>
you are right - it seems to run slower quite a bit - is there any way to fix this?
<megi>
you can check the board for any crystals, maybe they cheaped out and didn't use 32768Hz crystal for the RTC and that's why it doesn't work
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<megi>
anyway, I guess we can enable the autoswitching to RC oscillator on H6, but the patch will need to be a more proper. instead of changing the define to incorrect value, we'd have to add correct code for enabling the autoswitch feature
<hexdump0815>
i guess so then - the box is closed right now but as most tv boxes its most probably not really the best quality of electronics :)