Subject: Re: MI I^2C drivers
To: Manuel Bouyer <>
From: Matthew Jacob <>
List: tech-kern
Date: 07/26/2000 13:26:50
Whatever you doe for i2c in an MI way, can you think about how it might fit
with the Alpha 4100 embedded i2c stuff (embedded on the motherboard)?

On Wed, 26 Jul 2000, Manuel Bouyer wrote:

> On Wed, Jul 26, 2000 at 06:48:58PM +0100, Ben Harris wrote:
> > How would you propose handling the case where (say) a SCSI card has an
> > I^2C bus that it uses privately to connect an EEPROM containing its
> > configuration?  That seems to be the current target of sys/dev/i2c.
> Yes, I wrote this for the eeprom attached to the ThunderLAN-based ethernets
> I have. I though it would be eventually be used for similar requirements
> of other ethernet or scsi adapters, but not much more.
> I'm not sure this can be handled by a real bus at all, as there doesn't seem
> to be any device adress here (it was a long time ago ... I don't remember :)
> > 
> > We also need some idea of the interface to the low-level driver.  The
> > Acorn interfaces are bit-banged by the CPU.  How do more sophisticated
> As does i2c on the ThunderLAN.
> --
> Manuel Bouyer <>
> --