From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nikolai Zhubr <n-a-zhubr@yandex.ru>
Date: Sun, 23 Dec 2018 19:04:02 +0300
Subject: [U-Boot] SPL variant of sunxi nand module
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References: <5C1F8DBC.1010304@yandex.ru>
Message-ID: <5C1FB1F2.8040908@yandex.ru>
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To: u-boot@lists.denx.de

Hi again,

23.12.2018 16:29, I wrote:
>  > U-Boot SPL 2019.01-rc2 (Dec 20 2018 - 16:30:46 +0300)
>  > CPU: 912000000Hz, AXI/AHB/APB: 3/2/2
>  > DRAM: 1024 MiB
>  > Trying to boot from NAND
>

Ok, discovered a special SPL-only sunxi_nand_spl variant, added some 
debugging, so the detection is visible:

In nand_detect_config(), start detection...
Considering addr_cycles=5, page_size=2048
  Considering ecc_size=1024, ecc_strength=0 failed(a).
Considering addr_cycles=5, page_size=2048 rejected.
Considering addr_cycles=5, page_size=4096
  Considering ecc_size=1024, ecc_strength=3 failed(a).
Considering addr_cycles=5, page_size=4096 rejected.
Considering addr_cycles=5, page_size=8192
  Considering ecc_size=1024, ecc_strength=4 good(b).
Considering addr_cycles=5, page_size=8192 accepted.

I'm almost 100% sure that correct config would be page_size=8192, 
ecc_size=1024, ecc_strength=40 (from nand chip identification structure 
for regular linux kernel)

Now the detection routine in sunxi_nand_spl apparently comes up with a 
value of ecc_strength=4 instead... Why is that?


Thank you,

Regards,
Nikolai


>
>
> Thank you,
>
> Regards,
> Nikolai
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