On Wed, Sep 09, 2009 at 09:09:21AM -0700, Amit Uttamchandani wrote: > On Wed, Sep 09, 2009 at 06:44:05AM -0700, Greg KH wrote: > > On Wed, Sep 09, 2009 at 12:34:03AM -0700, Amit Uttamchandani wrote: > > > > > > I am interested in using mdio-gpio driver to emulate the MDIO bus over > > > GPIO. This is needed to control the SMSC LAN 8700 PHY. Now, there is a > > > driver that already exists to control the phy (smsc.c). > > > > > > How do I 'connect' the two drivers? Do I write a new driver? Or do I use > > > the mdio-gpio to set up the necessary pins, and then the smsc.c phy > > > driver (which uses MDIO already) will automatically use the mdio over > > > gpio. > > > > The later option sounds like a good idea, have you tried this to see if > > it works? > > > > > Thanks for the reply Greg. > > I haven't tried the latter option as I am not too sure how this is done. > I am thinking right now I have to load the driver (mdio-gpio) first. But > then after this I'm lost. Where do I configure which GPIO pins to use? > There must be some userspace app/config to do that correct? Yes, you can do this from userspace through sysfs. Look at Documentation/gpio.txt good luck, greg k-h _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
