<afaerber>
am I seeing correctly that the rockusb "Update" button functionality is implemented in U-Boot?
<afaerber>
any chance to recover a board with ATF in flash and a broken U-Boot?
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<mmind00>
afaerber: yep rockusb is just the bootloader doing special things
<mmind00>
afaerber: if you have schematics for your board, most contain testpoints for shorting emmc_clkf to ground ... which makes the soc go into maskrom mode
<mmind00>
afaerber: meant emmc_clko ... for your geekbox look into the main-schematics page 9
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<afaerber>
mmind00: thanks for the tip! maskrom sent me in the right direction
<afaerber>
the usual commands don't seem to work though
<afaerber>
`sudo ./utils/upgrade_tool di uboot u-boot.img` says "parameter is invalid,please check!"
<mmind00>
afaerber: sorry was away, but it looks like you figured it out already :-)
<afaerber>
mmind00: yeah, can recover now but still not figuring out why only debug serial is working and not DM :/
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<mmind00>
afaerber: dm seems to only probe stuff once somebody wants to access it ... at least that is what I saw on my rk3188
<mmind00>
can you reach a prompt at all yet?
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<afaerber>
nope, just the serial error and "### ERROR ### Please RESET the board ###"
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<mmind00>
I'm still mostly clueless regarding uboot, but on the rk3188 I was hunting hanging initcalls in the beginning, where my clock/pinctrl/whatever drivers had some smalm mistakes
<afaerber>
for now I'm chainloading, so serial etc. is already set up to some degree luckily