On 24/05/17 23:25, Boris Brezillon wrote: > On Wed, 24 May 2017 13:23:01 +0200 > Boris Brezillon <[email protected]> wrote: > >> Hi Chris, >> >> On Wed, 24 May 2017 09:36:56 +0000 >> Chris Packham <[email protected]> wrote: >> >>> On 23/05/17 17:27, Chris Packham wrote: >>>> Hi, >>>> >>>> I'm doing some testing on linux-next and I'm finding that my nand flash >>>> has disappeared. >>>> >>>> pxa3xx-nand f10d0000.flash: This platform can't do DMA on this device >>>> pxa3xx-nand f10d0000.flash: non-supported command ef >>>> pxa3xx-nand f10d0000.flash: non-supported command ee >>>> pxa3xx-nand f10d0000.flash: non-supported command ef >>>> pxa3xx-nand f10d0000.flash: non-supported command ee >>>> On-die ECC forcefully enabled, not supported >>>> nand: No NAND device found >>>> pxa3xx-nand f10d0000.flash: failed to scan nand at cs 0 >>>> >>>> This was working around 4.11. I'll try to do some more digging tomorrow >>>> to narrow down a failure point but I thought I'd send this out now just >>>> in case it rings any bells. >>>> >>>> The board I'm using (DB-88F6820-AMC) is unfortunately out-of tree but it >>>> should be pretty close to the armada-388-db. I can make my dts available >>>> if it's helpful. >>> >>> Still works on 4.12-rc2. Fails on next-20170524. >>> >>> This appears to be due to commit b566d9c055de ("mtd: nand: add support >>> for Micron on-die ECC"). Which based on the description seems intentional. >>> >>> Since I have access to a hardware platform that has a micron flash with >>> ECC forcefully enabled how can I help to get this implemented. >> >> Can you try with this patch applied [1]? > > Sorry, wrong patch. Can you try this one [1] instead? > > [1]http://code.bulix.org/pkfhmi-135875 >
With the patch above the chip is detected but ubifs is unhappy ubi0: attaching mtd0 random: fast init done random: crng init done ubi0: scanning is finished ubi0: attached mtd0 (name "pxa3xx_nand-0", size 1024 MiB) ubi0: PEB size: 262144 bytes (256 KiB), LEB size: 253952 bytes ubi0: min./max. I/O unit sizes: 4096/4096, sub-page size 4096 ubi0: VID header offset: 4096 (aligned 4096), data offset: 8192 ubi0: good PEBs: 4088, bad PEBs: 8, corrupted PEBs: 0 ubi0: user volume: 1, internal volumes: 1, max. volumes count: 128 ubi0: max/mean erase counter: 1/0, WL threshold: 4096, image sequence number: 1508037110 ubi0: available PEBs: 0, total reserved PEBs: 4088, PEBs reserved for bad PEB handling: 72 ubi0: background thread "ubi_bgt0d" started, PID 597 UBIFS (ubi0:0): background thread "ubifs_bgt0_0" started, PID 601 UBIFS (ubi0:0): recovery needed UBIFS (ubi0:0): recovery completed UBIFS (ubi0:0): UBIFS: mounted UBI device 0, volume 0, name "user" UBIFS (ubi0:0): LEB size: 253952 bytes (248 KiB), min./max. I/O unit sizes: 4096 bytes/4096 bytes UBIFS (ubi0:0): FS size: 1016315904 bytes (969 MiB, 4002 LEBs), journal size 9404416 bytes (8 MiB, 38 LEBs) UBIFS (ubi0:0): reserved for root: 0 bytes (0 KiB) UBIFS (ubi0:0): media format: w4/r0 (latest is w5/r0), UUID 9D7B5AAA-EFDC-41D4-875B-F9CDB457AE9D, small LPT model UBIFS error (ubi0:0 pid 599): ubifs_read_node: bad node type (160 but expected 0) UBIFS error (ubi0:0 pid 599): ubifs_read_node: bad node at LEB 10:90344, LEB mapping status 1 Not a node, first 24 bytes: 00000000: 00 00 00 00 31 18 10 06 c3 f6 23 f6 3b 00 00 00 00 00 00 00 a0 00 00 00 ....1.....#.;........... CPU: 1 PID: 599 Comm: mount Not tainted 4.12.0-rc2-next-20170524-at1+ #56 Hardware name: Marvell Armada 380/385 (Device Tree) [<801102dc>] (unwind_backtrace) from [<8010b658>] (show_stack+0x10/0x14) [<8010b658>] (show_stack) from [<8031aa0c>] (dump_stack+0x88/0x9c) [<8031aa0c>] (dump_stack) from [<802aebb8>] (ubifs_read_node+0x130/0x284) [<802aebb8>] (ubifs_read_node) from [<802ca2a4>] (ubifs_tnc_read_node+0x4c/0xd4) [<802ca2a4>] (ubifs_tnc_read_node) from [<802b1e60>] (ubifs_tnc_locate+0x1c0/0x1c8) [<802b1e60>] (ubifs_tnc_locate) from [<802aa15c>] (ubifs_iget+0x78/0x554) [<802aa15c>] (ubifs_iget) from [<802aa90c>] (ubifs_mount+0x2d4/0x1524) [<802aa90c>] (ubifs_mount) from [<801dfab4>] (mount_fs+0x14/0xa4) [<801dfab4>] (mount_fs) from [<801fa6b4>] (vfs_kern_mount+0x4c/0xf4) [<801fa6b4>] (vfs_kern_mount) from [<801fd738>] (do_mount+0x154/0xb50) [<801fd738>] (do_mount) from [<801fe49c>] (SyS_mount+0x74/0x9c) [<801fe49c>] (SyS_mount) from [<801077a0>] (ret_fast_syscall+0x0/0x3c) UBIFS error (ubi0:0 pid 599): ubifs_iget: failed to read inode 1, error -22 UBIFS (ubi0:0): background thread "ubifs_bgt0_0" stops ubi0: detaching mtd0 ubi0: mtd0 is detached ubi0: attaching mtd0 ubi0: scanning is finished ubi0 error: ubi_read_volume_table: the layout volume was not found ubi0 error: ubi_attach_mtd_dev: failed to attach mtd0, error -22
