[flashrom] flashrom and W25Q128FV

[Dumitru Ursu]

On 03/06/2017 04:50 AM, Connor Illian wrote:
> the winbond W25Q128FV is listed as supported by flashrom.
> 
> i have attempted to communicate with this chip via raspberry pi spidev as well as buspirate from ubuntu.  i have one chip pulled from a working machine and three brand new blanks.
> 
> no EEPROM is found no matter what i try with any chip.  i cannot specify chip, and reading with -f results in an empty bin.
> 
> i can remove the winbond chip from the socket and place a macronix mx25L6406e and flashrom identifies the chip immediately.
> 
> i have compared data sheets between the macronix and winbond chips, and they are identical in terms of power, pinout, op codes, etc.
> 
> the only difference is the macronix is 64mbit and the winbond is 128mbit.
> 
> how can i proceed?

Have you tried lowering the speed? Using a Bus Pirate and a
WSON-packaged  Macronix MX25L6405D I had to lower the speed to 30K
before it would even detect it. I didn't use an external power supply
though.

Dima.