On 17 December 2014 at 11:40, Boris BREZILLON <[email protected]> wrote: > Hi Michal > > Le mardi 16 décembre 2014 19:01:58 UTC+1, Michal Suchanek a écrit : >> >> Hello, >> >> I tried to rebase the v7 patchset on top of 3.18 and add the DT >> bindings on cubieboard: >> >> https://github.com/hramrach/linux-sunxi/commit/a946d593ddcf443b0f035f6d39fe0c558189dacc >> >> The nand driver fails equally on both cubieboard versions: >> >> cubieboard: >> [ 0.643554] calling nand_base_init+0x0/0x20 @ 1 >> [ 0.643565] initcall nand_base_init+0x0/0x20 returned 0 after 3 usecs >> [ 0.643578] calling sunxi_nfc_driver_init+0x0/0x10 @ 1 >> [ 0.665751] nand: Could not find valid JEDEC parameter page; aborting >> [ 0.670907] nand: device found, Manufacturer ID: 0xec, Chip ID: 0xd7 >> [ 0.675949] nand: Samsung NAND 4GiB 3,3V 8-bit >> [ 0.679098] nand: 4096MiB, MLC, page size: 8192, OOB size: 640 >> [ 0.683748] sunxi_nand 1c03000.nand: ECC init failed: -22 >> [ 0.687839] sunxi_nand 1c03000.nand: failed to init nand chips >> [ 0.692440] sunxi_nand: probe of 1c03000.nand failed with error -22 >> [ 0.697500] initcall sunxi_nfc_driver_init+0x0/0x10 returned 0 >> after 52642 usecs >> cubieboard2: >> [ 0.666766] calling nand_base_init+0x0/0x20 @ 1 >> [ 0.666777] initcall nand_base_init+0x0/0x20 returned 0 after 3 usecs >> [ 0.666790] calling sunxi_nfc_driver_init+0x0/0x10 @ 1 >> [ 0.683003] nand: Could not find valid JEDEC parameter page; aborting >> [ 0.688159] nand: device found, Manufacturer ID: 0xec, Chip ID: 0xd7 >> [ 0.693201] nand: Samsung NAND 4GiB 3,3V 8-bit >> [ 0.696349] nand: 4096MiB, MLC, page size: 8192, OOB size: 640 >> [ 0.700956] sunxi_nand 1c03000.nand: ECC init failed: -22 >> [ 0.705060] sunxi_nand 1c03000.nand: failed to init nand chips >> [ 0.709658] sunxi_nand: probe of 1c03000.nand failed with error -22 >> [ 0.714768] initcall sunxi_nfc_driver_init+0x0/0x10 returned 0 >> after 46833 usecs >> >> Is this expected or does somebody have the driver working on some device? > > > As Henrik already answered, it seems that your NAND chip is not properly > defined in the nand_ids table [1]. > Read your NAND datasheet and add a new entry (take a look at this one [2] as > an example). > You should also fill the correct timing mode, though mode 0 should work > correctly on all recent NANDs. >
Regarding the mode - the chip is probably meant to run at something like mode 4 according to the timings table in datasheet. Unfortunately, some of the longer state transitions only conform to mode 0. The sunxi driver claims to run chip at 30 MHz which would probably fall somewhere in between mode 2 and mode 3. Thanks Michal -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
