http://e2e.ti.com/support/arm/sitara_arm/f/791/t/335017
i have same issue, sometimes jump phy id, sometimes no detection. on my custom board with 8710A. suspect interference with RESET pin. I have altered my design, everything is better now. correct: [ 1.206085] CAN bus driver for Bosch D_CAN controller 1.0 [ 1.253601] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6 [ 1.260040] davinci_mdio davinci_mdio.0: detected phy mask fffffffe [ 1.267333] davinci_mdio.0: probed [ 1.270874] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver SMSC LAN8710/LAN8720 wrong: [ 1.186248] CAN bus driver for Bosch D_CAN controller 1.0 [ 1.233612] davinci_mdio davinci_mdio.0: davinci mdio revision 1.6 [ 1.240051] davinci_mdio davinci_mdio.0: detected phy mask fffffffb [ 1.247283] davinci_mdio.0: probed [ 1.250823] davinci_mdio davinci_mdio.0: phy[2]: device 0:02, driver SMSC LAN8710/LAN8720 On Tue, Dec 16, 2014 at 5:41 PM, <alexschneider...@gmail.com> wrote: > > Once in a while this happens too soon and the PHY doesn't come out of >> reset correctly. >> > > Then, without capacitors C24 and C30, things would get only worse, because > nRESET_INOUT is released even earlier without those caps. On the contrary, > removing caps helps. It looks like the slope of the reset pulse matters. > > Alex > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
