<apritzel>
... which is odd, as normally FEL mode is "eternal", so stays on as long as power is supplied
<apritzel>
but I have seen this brief USB enumeration before, and typically it's not the BootROM FEL, but something in Allwinner firmware, which just uses the same USB ID pair
<apritzel>
so this might not even use the same protocol
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<apritzel>
warpme: many thanks for the elaborate testing, much appreciated.
<apritzel>
warpme: do you mind if I convert this email of yours into a "Tested-by:" tag?
<apritzel>
warpme: what were the DRAM parameters for your LPDDR4 device(s?)?
<apritzel>
the last I find from junari are: DX_ODT=0x07070707, DX_DRI=0x0e0e0e0e, CA_DRI=0x0e0e, ODT_EN=0xaaaaeeee, TPR6=0x44000000, TPR10=0x402f0663, TPR11=0x24242624, TPR12=0x0f0f100f
<apritzel>
OK, thanks! I don't think anyone has ever send a defconfig (plus the one liner in the Makefile to build the .dtb) to the list, for the Opi Zero3. warpme: do you care to do that?
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<warpme>
oh - issue is that my defconfig isn't correct for current mainline uboot i think (i'm using 2021.07 with dram code backported from current sunxi custodians + junari v4).
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<apritzel>
I have one here as well, just wanted to give you the opportunity, since you were first with it
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<junari>
With these values I got confirmation from the user with the 2GB version OPIzero3 that it at least boots linux kernel