[U-Boot-Users] Re: CONFIG_DTT_LM75 and CFG_EEPROM_PAGE_WRITE_ENABLE ???  

In message <425E665D.7030401@im...> Steven Scholz wrote:

is it realy necessary to define CFG_EEPROM_PAGE_WRITE_ENABLE in order to use the LM75 within U-Boot?

#ifdef CONFIG_DTT_LM75 #if !defined(CFG_EEPROM_PAGE_WRITE_ENABLE) || \ (CFG_EEPROM_PAGE_WRITE_BITS < 1) # error "CFG_EEPROM_PAGE_WRITE_ENABLE must be defined and CFG_EEPROM_PAGE_WRITE_BITS must be greater than 1 to use CONFIG_DTT_LM75" #endif

This is going somewhat on recollection...

The lm75 requires a multibyte write. The old i2c layer only worked with 1 byte at a time unless page writes were used. The newer i2c allows multibyte writes by default. I believe it can go away.

Erik