[U-Boot-Users] SPI EEPROM on MBX problem

[Antonio Di Bacco]

I'm trying to make a work an SPI EEPROM connected to the expansion connector 
of an old MBX board featuring  MPC860EN processor. I used the spi.c driver in 
u-boot with no results, then I tried applying the patch from Gurevitch but 
nothing. Could I have problems with relocation of DPRAM for SPI? 
I double checked all the connections to the SPI EEPROM and it seems ok, when 
configuring the SPIMISO, SPIMOSI, SPICLK and SPISEL as GPIO active output I 
can measure a right voltage level on these pins when I write something to 
Port B data register. Unfortunately I have a not an oscilloscope to see what 
happen when I use the sspi command like this:

sspi 0 8 05   (for Gurevitch patch)
 05 is the code read a configuration register.

Sometimes the EEPROM answer FF, some others 00 , it is completely randomic.

Bye,
Antonio.