On Thu, Jul 11, 2019 at 10:36 AM Antony Pavlov <antonynpavlov@xxxxxxxxx> wrote: > > On Thu, 11 Jul 2019 15:30:01 +0200 > Benjamin Beckmeyer <beb@xxxxxxxxxxxx> wrote: > > > Hey all, > > is there a possibility to read/write specific registers from/to different MII addresses? > > > > I know that there is miitool but it just can give me the first 16 registers of a PHY. > > But I need write specific registers e.g. MII addr 2 register 0 and read MII addr 2 > > register 1. I know uboot is having the mii command(exactly what I would need), and I > > have seen that there were parameters for address and register in miitool but they > > were deleted lastly. > > > > Hi Benjamin! > > You can use /dev/mdio* devices for reading/writing MII registers. > E.g. > md -s /dev/mdio0-phy00 > mw -d /dev/mdio0-phy00 -w 0 0x12345678 > > Just after barebox boot there is no /dev/mdio* devices. > After network interface initialization (e.g. after ifup command) or > after miitool command the /dev/mdio* devices appear. > Adding to that, if you device doesn't have register layout detectable by MII bus probe algorithm an arbitrary phydev can be forcefully created using miitool -r <busno>:<addr> Comes really handy when dealing with something other than PHY devices (e.g reading switch registers). Thanks, Andrey Smirnov _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox
