WD MyCloud Ex, Armada-370, pxa3xx-nand, marvell-nfc

[David Schaefer]

Hi,

I am trying to upgrade to a more recent kernel. I face the issue that
I am missing the /dev/mtdblock1-6 devices. I have tracked down that
issue shows up the first time with 4.16.1 and does not exist with
4.15.18.

Also I have this initalization during 4.15.18:

> f10d0000.nand: This platform can't do DMA on this device
> nand: device found, Manufacturer ID: 0xad, Chip ID: 0xda
> nand: Hynix H27U2G8F2CTR-BC
> nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
> pxa3xx-nand f10d0000.nand: ECC strength 16, ECC step size 2048
> Bad block table found at page 131008, version 0x01
> Bad block table found at page 130944, version 0x01
> nand_read_bbt: bad block at 0x00000e7c0000
> 7 ofpart partitions found on MTD device pxa3xx_nand-0
> Creating 7 MTD partitions on "pxa3xpxa3xx-nand x_nand-0":
> 0x000000000000-0x000000500000 : "u-Boot"
> 0x000000500000-0x000000a00000 : "uImage"
> 0x000000a00000-0x000000f00000 : "ramdisk"
> 0x000000f00000-0x00000d800000 : "image.cfs"
> 0x00000dd00000-0x00000ec00000 : "rescue firmware"
> 0x00000ec00000-0x000010000000 : "config"
> 0x00000d800000-0x00000dd00000 : "reserve"

and this with 4.16.1:

> nand: device found, Manufacturer ID: 0xad, Chip ID: 0xda
> nand: Hynix H27U2G8F2CTR-BC
> nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
> marvell-nfc f10d0000.nand: Timeout on CMDD (NDSR: 0x00000080)
> marvell-nfc f10d0000.nand: Timeout on CMDD (NDSR: 0x00000280)
> Bad block table not found for chip 0
> Bad block table not found for chip 0
> Scanning device for bad blocks
> Bad eraseblock 1854 at 0x00000e7c0000

I have tried 4.19.161 and 5.4.83 as well but my /dev/mtdblock1-6
devices keep being missing.

What do I have to do to turn them back on? Do I have to modify my dts
file for the new driver marvell_nand?
https://fox-exe.ru/WDMyCloud/WDMyCloud-Mirror/Developing/kernel-4.15.0-rc6/armada-370-wdmc-mirror-gen1.dts

I've read whatever I found and do not know how to continue here.

Kind regards
David