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<mmind00>
samueldr: I don't think the bootrom is different on the op1-variant ... chromeos-devices just use a different bootloader
<mmind00>
what is "CCD hardware"?
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<dvergatal>
is it possible that board with px30 which was produced for our customer may have not support in u-boot tpl/spl boot flow? by support i mean that, some changes needs to be added to u-boot (not ondy dts) because now i'm using miniloader to boot up the system
<dvergatal>
and i'm using evb-px30 configuration file
<dvergatal>
but still tpl is hanging right on start
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<mmind00>
dvergatal: if tpl is hanging, the ram config is probably wrong
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<dvergatal>
mmind00: hi
<dvergatal>
mmind00: yeah that is what we have established together with marex on #u-boot
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<dvergatal>
btw. liteon is using some strange binary for ram configuration
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<dvergatal>
they are using px30_ddr_333MHz_v1.15_no_dll_byp.bin and i was thinking is it possible for me to somehow tweak this u-boot to use the same configuration
<dvergatal>
ahhh one more thing
<dvergatal>
they use also rk3326_fix_ddr3_200MHz_v1.15.bin
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<samueldr>
I think the earlier one is wrong; from an older design
<samueldr>
I don't know how it ends up "looking" on the device's (tablet's) side on a schematic, where it hooks-up, is it parallel to the usb controller, is it in-line?
<mmind00>
samueldr: ah ok, that one ... while I do have a scarlet + debug adapter, I didn't remember that abbreviation from "back then" :-)
<samueldr>
software-wise I tried the exact same kernel revision which works on another (1) rk3399 device, with the equivalent changes (.dts*, verified in /proc/device-tree)
<samueldr>
in fact software-wise, for the kernel, the operation is successful, it is in gadget mode
<samueldr>
but on the host side, it fails with "device descriptor read/64, error -32" and "Device not responding to setup address." ending with "unable to enumerate USB device"
<samueldr>
(tried with a normal usb cable, in case it was the suzy-q cable that was causing the issue, and tried both type-c orientation)
<samueldr>
so yeah, other than [whatever CCD with Cr50 is called], I don't know what differences there could be that makes gadget mode fail
<samueldr>
but considering the host starts seeing errors to enumerate the moment it's put in gadget mode, it's *almost* successful
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<mmind00>
samueldr: I guess question would be on what kernel are you running ... option would be to try the chromeos-4.4 branch to see if functionality changes
<samueldr>
hmm, good call
<samueldr>
tried on 5.4 and 5.10
<samueldr>
but I have strong doubts about it being more successful on chromeos-4.4, considering chromeos doesn't use gadget mode
<mmind00>
samueldr: maybe, but then the usb3+typec support for rk3399 in mainline is pretty broken and unfinished
<samueldr>
and gru is all `dr_mode = "host"` for the controller
<samueldr>
though it does work fine on 1 other verified rk3399 device, and is suspected to work on at least another one (as the solution was found from user posts about it on another board)
<vagrantc>
usb3 really breaks some rk3399 platforms when enabled in u-boot ...
<mmind00>
samueldr: a friend told me "hardware should all be there though" for scarlet and device mode, but I guess nobody on their end ever made it that far
<samueldr>
hmm, odd
<samueldr>
alright, so looking at the chromeos 4.4 source at least the required bits all seem to be approx the same as on 5.4
<samueldr>
by which I mean it at least doesn't look impossible form the get go
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<dvergatal>
mmind00: btw. where can i change/configure ram for tpl?
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