Hi Boris,

On 26/02/16 18:33, Boris Brezillon wrote:

Hi Harvey,

On Fri, 26 Feb 2016 15:17:28 +0000
Harvey Hunt [off-list ref] wrote:

quoted

Hi Boris,

On 26/02/16 15:10, Boris Brezillon wrote:

quoted

Hi Harvey,

On Fri, 26 Feb 2016 14:35:08 +0000
Harvey Hunt [off-list ref] wrote:

quoted

[...]
I'll look into this more later today, but wanted to run it by you in
case you have any thoughts.

Can you apply this patch [1], and let me know if you see the additional
trace?

I applied the patch, the following is the (unchanged) output:

[    0.256375] nand: device found, Manufacturer ID: 0x2c, Chip ID: 0x88
[    0.262887] nand: Micron MT29F64G08CBAAAWP
[    0.266995] nand: 8192 MiB, MLC, erase size: 2048 KiB, page size:
8192, OOB size: 448
[    0.274881] jz4780-nand 1b000000.nand-controller: using hardware BCH
(strength 24, size 1024, bytes 42)
[    0.289046] Bad block table not found for chip 0
[    0.297769] Bad block table not found for chip 0
[    0.302425] Scanning device for bad blocks
[    0.320239] Bad eraseblock 90 at 0x00000b400000
[    0.324934] Bad eraseblock 91 at 0x00000b600000
[    0.931054] Bad eraseblock 4092 at 0x0001ff800000
[    0.935917] Bad eraseblock 4093 at 0x0001ffa00000
[    0.944660] nand_bbt: error while writing bad block table -34
[    0.950448] jz4780-nand: probe of 1b000000.nand-controller failed
with error -34
[    0.958079] UBI error: cannot open mtd 3, error -19
[    0.962788] UBI error: cannot open mtd 4, error -19[    0.970229]
clk: Not disabling unused clocks

Can you test with this one [1]?

[1]http://code.bulix.org/36oytz-91960

With that patch applied, my Ci20 successfully boots again.

Thanks for looking into it :-)

Harvey