m25p80 spi32766.0: unrecognized JEDEC id bytes: 00, 0, 0

[Michal Suchanek]

Hello,

On 26 May 2016 at 19:30, Barbier, Renaud (Abaco Systems, Non-GE)
<Renaud.Barbier at ge.com> wrote:
> Hello,
> I am running Broadcom 53346 with integratedARM cpu on  Linux 4.0.0 and get the message
> m25p80 spi32766.0: unrecognized JEDEC id bytes: 00,  0,  0

This means the flash responds with all zero to an identify request.
This typically means there is no flash connected, there is bad socket
contact (if socketed) or the chip is dead. It may be also caused by
problem with setting up reset/enable/cs/.. pins.

> followed by a crash
>
> when mounting the spi nor (m25p80 spi32766.0: n25q256a)
>
> What would be the cause of this read failure?

If you depend on the flash chip containing something useful the system
would obviously crash.

HTH

Michal