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<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?
<warpme> apritzel : oops - forgot that sorry. sure. pls do!
<apritzel> OK, thanks, will do
<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
<warpme> on my lpddr4 (zero3) im using defconfig like this: https://gist.github.com/warpme/6427796527c10630707f3e83f23b5cc3
<warpme> dts has also dcdc3 increased to 1150mV
<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
<junari> apritzel: about untested values for LPDDR3, I got the missed values using ghidra
<junari> I completely forgot to mention thisъ
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