Question about GPIO bitbang MII

Sun Oct 9 17:30:00 UTC 2011

On Fri, Oct 07, 2011 at 10:34:58AM +0800, dave jones wrote:
> Hi,
> 
> Does FreeBSD have gpio bitbang api for MII? If not, any driver in tree using
> gpio-bitbang mii that I can refer to? Thanks.
> It seems like OpenBSD, NetBSD and Linux have added support to gpio bitbang mii,
> and it's useful for porting embedded devices.
> 

If what you are referring to is their mii_bitbang.[c,h] then I've a patch
which (im)ports these and converts drivers to take advantage of it here:
http://people.freebsd.org/~marius/mii_bitbang.diff
You can also hook up that generic MII bitbang'ing code up to GPIO.

Marius