* [U-Boot-Users] Re: CONFIG_DTT_LM75 and CFG_EEPROM_PAGE_WRITE_ENABLE ???
@ 2005-04-16 4:16 Erik Theisen
0 siblings, 0 replies; only message in thread
From: Erik Theisen @ 2005-04-16 4:16 UTC (permalink / raw)
To: u-boot
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
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: text/enriched
Size: 815 bytes
Desc: not available
Url : http://lists.denx.de/pipermail/u-boot/attachments/20050416/848de182/attachment.bin
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2005-04-16 4:16 UTC | newest]
Thread overview: (only message) (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2005-04-16 4:16 [U-Boot-Users] Re: CONFIG_DTT_LM75 and CFG_EEPROM_PAGE_WRITE_ENABLE ??? Erik Theisen
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox