IMX7D nand access error

hyoungkikim — Fri, 19 Nov 2021 08:45:03 GMT

i have a problem with IMX7D-SDP when i try to access a NAND flash

i installed resistors and i compared mx7dsabresd_defconfig with mx7dsabresd_nand_defconfig

and added all nand related config except CONFIG_NAND_BOOT

after that i can see nand flash on u-boot

below is console output

U-Boot 2020.04-5.4.70-2.3.0+ge42dee801e (Nov 19 2021 - 14:47:35 +0900)

DRAM: 1 GiB

PMIC: PFUZE3000 DEV_ID=0x30 REV_ID=0x11
NAND: Micron MT29F1G08ABAEAWP
device found, Manufacturer ID: 0x2c, Chip ID: 0xf1
128 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
nand_scan_ident ok

but i can't access nand

=> nand read 0x83000000 0x0 0x1000

NAND read: device 0 offset 0x0, size 0x1000
MXS NAND: DMA read error
MXS NAND: Error sending command
MXS NAND: Error sending command
MXS NAND: DMA read error
MXS NAND: Error sending command
MXS NAND: Error sending command
MXS NAND: DMA read error
MXS NAND: Error sending command
MXS NAND: Error sending command
MXS NAND: DMA read error
MXS NAND: Error sending command
MXS NAND: Error sending command
MXS NAND: DMA read error

what do i miss ? or where should i check ? any idea are welcom

thanks in advnace

Re: IMX7D nand access error

igorpadykov — Fri, 19 Nov 2021 09:52:37 GMT

Hi Hyoung

i.MX7D GPMI NAND driver is described in sect.3.4 NAND GPMI Flash i.MX Linux Reference Manual

example uboot nand write can be found for example on

https://linux-mtd.infradead.narkive.com/DNQF5825/u-boot-using-nand-write-to-flash-an-ubi-image-ubi-part-fails

Best regards
igor

topic IMX7D nand access error in i.MX Processors

IMX7D nand access error

Re: IMX7D nand access error