Hi,
I'm using the i.MX503 along with the 2.6.35.3 kernel, and I'm having issues with the GPMI NAND controller. It appears to detect the chip properly, but when I attempt to read/write from it I get an error in gpmi_nfc_dma_go. It looks like it's failing to get a DMA Completion interrupt, causing gpmi_nfc_dma_go to timeout. Has anyone experienced this before, or know where I might begin looking?
boot log:
| MXC MTD nand Driver 3.0 | |
| i.MX GPMI NFC | |
NFC: Version 2, 8-chip GPMI and BCH
Boot ROM: Version 1, Single-chip boot area, block mark swapping supported
| Scanning for NAND Flash chips... | |
-----------------------------
NAND Flash Device Information
-----------------------------
| Manufacturer | : Micron (0x2c) |
| Device Code | : 0x88 | |
Cell Technology : MLC
Pages per Block : 256
| Page Geometry | : 8192+448 |
| ECC Strength | : 24 bits |
| ECC Size | : 1024 B |
Data Setup Time : 15 ns
Address Setup Time: 20 ns
GPMI Sample Delay : 6 ns
| tREA | : 20 ns |
| tRLOH | : 5 ns |
| tRHOH | : 15 ns |
| Description | : MT29F64G08CBAAA(8GB, 2CE) |
| ------------ | |
NFC Geometry
------------
| ECC Algorithm | : BCH |
| ECC Strength | : 24 |
| Page Size in Bytes | : 8640 |
Metadata Size in Bytes : 10
ECC Chunk Size in Bytes: 512
Payload Size in Bytes : 8192
Auxiliary Size in Bytes: 28
Auxiliary Status Offset: 12
Block Mark Byte Offset : 7636
Block Mark Bit Offset : 0
NAND device: Manufacturer ID: 0x2c, Chip ID: 0x88 (Micron ONFI NAND 3,3V 8-bit)
Boot ROM Geometry
-----------------
| Boot Area Count | : 0 |
| Boot Area Size in Bytes | : 0 (0x0) |
| Stride Size in Pages | : 64 | |
Search Area Stride Exponent: 2
Scanning device for bad blocks
Bad eraseblock 90 at 0x00000b400000
Bad eraseblock 91 at 0x00000b600000
Creating 2 MTD partitions on "gpmi-nfc-main":
| 0x000000000000-0x000004000000 : "kernel" | |
0x000004000000-0x000200000000 : "filesystem"
Error details:
root@snapper:~$ cat /proc/mtd
dev: size erasesize name
mtd0: 04000000 00200000 "kernel"
mtd1: 1fc000000 00200000 "filesystem"
root@snapper:~$ mtdtool --eraseall kernel
100% 64M (646.46M/s)
gpmi-nfc gpmi-nfc.0: [gpmi_nfc_dma_go] Chip: 0, DMA Channel: 0, Error -110
[ start_dma_with_bch_irq ] DMA error
[ start_dma_with_bch_irq ] bch timeout!!!
gpmi-nfc gpmi-nfc.0: [mil_ecc_write_page] Error in ECC-based write: -110
gpmi-nfc gpmi-nfc.0: [gpmi_nfc_dma_go] Chip: 0, DMA Channel: 0, Error -110
[ start_dma_without_bch_irq ] DMA error
gpmi-nfc gpmi-nfc.0: [mil_cmd_ctrl] Chip: 0, Error -110
Command Bytes: 10
gpmi-nfc gpmi-nfc.0: [gpmi_nfc_dma_go] Chip: 0, DMA Channel: 0, Error -110
[ start_dma_without_bch_irq ] DMA error
gpmi-nfc gpmi-nfc.0: [mil_cmd_ctrl] Chip: 0, Error -110
Command Bytes: 70
