Re: [PATCH 5/7] mtd: nand: Add Hynix H27UBG8T2BTR-BC to nand_ids table

On Mon, 6 Jun 2016 22:31:38 +0200
Boris Brezillon [off-list ref] wrote:

On Mon, 6 Jun 2016 22:59:03 +0300
Aleksei Mamlin [off-list ref] wrote:

quoted

On Mon, 6 Jun 2016 20:55:49 +0200
Boris Brezillon [off-list ref] wrote:
  

quoted

On Mon,  6 Jun 2016 13:24:22 +0300
Aleksei Mamlin [off-list ref] wrote:
    

quoted

Add the full description of the Hynix H27UBG8T2BTR-BC NAND chip in the
nand_ids table so that we can later use the NAND ECC infos and ONFI timings
mode in controller drivers.    

Still hoping to get this series [1] merged in 4.8, but if that's
not the case, I'll apply your patch.

BTW, that would be great if you could test it on your platforms.
    

It seems that Hynix-specific initialization code can't handle H27UBG8T2BTR-BC
chip:

[    0.886153] nand: Could not find valid ONFI parameter page; aborting
[    0.892665] nand: device found, Manufacturer ID: 0xad, Chip ID: 0xd7
[    0.899025] nand: Hynix 1c03000.nand
[    0.902596] nand: bus width 8 instead 16 bit
[    0.906858] nand: No NAND device found
[    0.910620] sunxi_nand 1c03000.nand: failed to init nand chips
[    0.916528] sunxi_nand: probe of 1c03000.nand failed with error -22  

Can you try this patch? It should fix the problem [1].

Brian, I have a question regarding the extended NAND ids (not full-ids)
defined in the nand_ids table. Are they really valid for all vendors?

If that's the case, why are we extracting the bus width from the id[3]
since we already have this information in the options field?

[1]http://code.bulix.org/6hjww1-100494

-- 
Boris Brezillon, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com