[flashrom] Flashing MX 25L12873F on MSI board via Raspberry Pi SPI

[Nico Huber]

Hi,

On 20.01.2018 23:44, Fabian Köster wrote:
>> Even if it seems to work less with a lower speed, please send logs for
>> that too (e.g. spispeed=30000, 10000, 1000).
> 
> You find the logs attached. The lowest speed flashrom outputs "chip
> found" is at 31250 kHz.

hmm, no big clue here. The flash chip doesn't react at all at lower
speeds. I remember a similar case that was reported lately. IIRC, it
came down to a floating /HOLD pin. Although your chip doesn't have
such a pin, it has two I/O pins (3 and 7) that are not used for the
regular SPI interface. You should make sure they have a defined state
(e.g. connect them through series resistors to GND or VCC). If you
have a multimeter at hand, you can measure the resistance between the
pins and GND / VCC each while everything is turned off, and ofc. to
which pins on the header they are connected.

Nico