#linux-sunxi on 2023-11-12 — irc logs at oftc.irclog.whitequark.org

2022-12-21 00:44 ChanServ changed the topic of #linux-sunxi to: Allwinner/sunxi development - Did you try looking at our wiki? https://linux-sunxi.org - Don't ask to ask. Just ask and wait for an answer! - This channel is logged at https://oftc.irclog.whitequark.org/linux-sunxi

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00:38 <apritzel> ... which is odd, as normally FEL mode is "eternal", so stays on as long as power is supplied

00:39 <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

00:39 <apritzel> so this might not even use the same protocol

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12:56 <apritzel> warpme: many thanks for the elaborate testing, much appreciated.

12:57 <apritzel> warpme: do you mind if I convert this email of yours into a "Tested-by:" tag?

12:57 <warpme> apritzel : oops - forgot that sorry. sure. pls do!

12:58 <apritzel> OK, thanks, will do

13:09 <apritzel> warpme: what were the DRAM parameters for your LPDDR4 device(s?)?

13:09 <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

13:11 <warpme> on my lpddr4 (zero3) im using defconfig like this: https://gist.github.com/warpme/6427796527c10630707f3e83f23b5cc3

13:11 <warpme> dts has also dcdc3 increased to 1150mV

13:16 <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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13:19 <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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13:41 <apritzel> I have one here as well, just wanted to give you the opportunity, since you were first with it

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17:52 <junari> With these values I got confirmation from the user with the 2GB version OPIzero3 that it at least boots linux kernel

17:55 <junari> https://4pda.to/forum/index.php?showtopic=1073025&st=300#entry125769484

17:57 <junari> apritzel: about untested values for LPDDR3, I got the missed values using ghidra

17:57 <junari> I completely forgot to mention thisъ

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