topic Re: SPI Nor Flash M25P16 in i.MX Processors

SPI Nor Flash M25P16

syedr1 — Thu, 14 Sep 2023 05:29:02 GMT

Hi Team,

Currently I am working on i.MX Processor for SPI NOR Flash M25P16 from Micron on Kernel Version 6.1.38..

I am getting below error

spi-nor spi0.0: unrecognized JEDEC id bytes: 00 00 00 00 00 00 00.

Please let me know How I can proceed

jimmychan — Tue, 19 Sep 2023 02:36:14 GMT

FYI.

syedr1 — Tue, 19 Sep 2023 05:29:08 GMT

Hi Jimmy,

Thank you,Now Nor flash is detecting .Now I have only mtd0.

How do I create different blocks for Nor flash like mtd0, mtd1, mtd2, mtd3 etc

Please suggest

jimmychan — Tue, 19 Sep 2023 07:23:34 GMT

If you have more NOR flash on your board, you could create different MTD for the flash.

syedr1 — Tue, 19 Sep 2023 12:48:07 GMT

Hi Jimmy,

Thanks for the reply.

Actually I have 32 blocks in Nor flash.Please provide below information.

1.How to write and read data to/from each block.

2.Is it necessary to erase the data before writing to each block?

3.Is there any command to get RDID of nor flash using command line

jimmychan — Wed, 20 Sep 2023 07:45:49 GMT

Please read the Chapter 3.8 in Linux Reference Manual for the MTD details.

And here are the related source codes.