#linux-sunxi on 2023-12-24 — 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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06:25 <junari> A guy with a 1.5GB version of the opizero3 dumped DRAM PHY registers on the vendor and mainline versions of u-boot. There are identical regs of ADRMAP and it successfully passed last quarter check

06:27 <junari> https://drive.google.com/drive/folders/1HbEr22xBzyNFOIMsUzntdjm8gzxGTKLX?usp=drive_link

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07:34 <junari> looks like the last part is re-referencing some existing part

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08:28 <jernej> junari: so issue seems to be in DRAM parameters

08:31 <jernej> junari: do you have exact 1.5 GB DRAM chip name

08:37 <junari> jernej: I will ask him

08:41 <jernej> I think that if there is different type of memory chips used for all variantions, mainline U-Boot would also need different type of parameters for each board.

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09:35 <jernej> ć

09:36 <jernej> junari: I'll try to reverse engineer DRAM config values from your dump and then your friend can test with them

09:37 <jernej> fyi, DRAM clock seems to be even higher, 816 MHz

09:38 <jernej> or thereabouts

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10:40 <jernej> junari: maybe try with http://sprunge.us/zOUBib along with your 1.5 GB check, but no changes to addrmap

10:41 <jernej> hopefully there should be no changes to in register settings

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