svn commit: r267021 - in head/sys: arm/broadcom/bcm2835 arm/ti boot/fdt/dts/arm

[John-Mark Gurney]

Luiz Otavio O Souza wrote this message on Tue, Jun 03, 2014 at 19:24 +0000:
> Author: loos
> Date: Tue Jun  3 19:24:53 2014
> New Revision: 267021
> URL: http://svnweb.freebsd.org/changeset/base/267021
> 
> Log:
>   FreeBSD, historically, has always used 8-bit addresses for i2c devices
>   (7-bit device address << 1), always leaving the room for the read/write bit.
>   
>   This commit convert ti_i2c and revert r259127 on bcm2835_bsc to make them
>   compatible with 8-bit addresses.  Previous to this commit an i2c device
>   would have different addresses depending on the controller it was attached
>   to (by example, when compared to any iicbb(4) based i2c controller), which
>   was a pretty annoying behavior.
>   
>   Also, update the PMIC i2c address on beaglebone* DTS files to match the new
>   address scheme.
>   
>   Now the userland utilities need to do the correct slave address shifting
>   (but it is going to work with any i2c controller on the system).
>   
>   Discussed with:	ian
>   MFC after:	2 weeks

We should probably document this in the iicbus(4) or iic(4) man page,
want to do the honors?

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."