Mike, Thanks. Will double check with reg=<0x0> - though expecting the same effect as having it undefined. Meanwhile I've found AR# 69132 <https://www.xilinx.com/support/answers/69132.html> - looks exactly what is needed - it just hasn't made it to the linux-xlnx yet.
Thanks again, Oleg On Thu, Jul 19, 2018 at 3:22 AM Mike Looijmans <[email protected]> wrote: > "0" is not a valid address for a PHY, it's the "broadcast" address on the > MDIO > bus. You should make your hardware designer who selected it hurt somewhere > painful. > > Having said that, address 0 usally happens to work if there's only one PHY > on > that bus, since it will be the only one responding to that broadcast. > > Change reg = <0x3> to reg = <0x0> in the devicetree. You can optionally > change > the descriptions as well, but it's the "reg" that really matters. This > might > work on the board with address "3" because that will also respond to the > broadcast address 0. > > > > On 18-07-18 03:12, Oleg K Dzhimiev wrote: > > Hi, > > > > How do I keep the device tree compatible across the board revisions if > phy > > addrs are different? > > We got a new board revision with a different phy reg, where old rev reg > == > > 0x3, new rev reg == 0x0. > > > > Here's the DT: > > > > ps7_ethernet_0: ps7-ethernet@e000b000 { > > local-mac-address = [00 0e 64 10 00 00]; > > phy-handle = <&phy3>; > > phy-mode = "rgmii-id"; > > mdio { > > #address-cells = <1>; > > #size-cells = <0>; > > phy3: phy@3 { > > /* Atheros 8035 */ > > compatible = > > "ethernet-phy-id004d.d072"; > > /* compatible = "ethernet-phy-ieee802.3-c22";*/ > > device_type = "ethernet-phy"; > > reg = <0x3>; > > }; > > }; > > }; > > > > > > So far, with the old revision (addr==0x3) I have tried to remove 'reg' > hoping > > it would do some sort of scanning but the macb driver (macb_mii_probe) > > registers 32 phy structs then picks the first one (addr==0) and timeouts > > trying to reset it. > > > > Thanks, > > > > Oleg Dzhimiev > > Electronics Engineer > > phone: +1 801 783 5555 x124 > > Elphel, Inc. > > > > > > -- > _______________________________________________ > meta-xilinx mailing list > [email protected] > https://lists.yoctoproject.org/listinfo/meta-xilinx >
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