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