Wrong SPI NOR model detected by mx6sl

Fabio Estevam festevam at gmail.com
Thu Apr 10 10:16:49 PDT 2014


Hi Marek,

On Thu, Apr 10, 2014 at 1:07 PM, Marek Vasut <marex at denx.de> wrote:

> Can you share the JEDEC ID codes that both of the boards actually read from the
> SPI NOR ? You can dump those in the m25p80.c driver . That'd be helpful, I
> suspect some kind of an "offset" or "polarity inversion" in the SPI
> communication causing this.

On mx6qsabresd:

m25p80 spi0.0: JEDEC id: 0x202016
m25p80 spi0.0: m25p32 (4096 Kbytes)

On mx6sl-evk:

m25p80 spi0.0: JEDEC id: 0x000000
m25p80 spi0.0: found mr25h256, expected m25p32
m25p80 spi0.0: mr25h256 (32 Kbytes)

Will need to dump the SPI registers to understand why mx6sl behaves like this.

Thanks,

Fabio Estevam



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