Messages in this thread | | | Date | Thu, 01 Oct 2009 16:14:40 +0100 | From | Mark Jackson <> | Subject | Accessing PHY registers |
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On our custom AVR32 board, we've a pair of NatSemi DP83848 PHYs.
dmesg shows the following:-
MACB_mii_bus: probed eth0: Atmel MACB at 0xfff01800 irq 25 (00:19:66:88:76:a4) eth0: attached PHY driver [Generic PHY] (mii_bus:phy_addr=0:01, irq=-1) macb macb.1: invalid hw address, using random MACB_mii_bus: probed eth1: Atmel MACB at 0xfff01c00 irq 26 (42:36:af:ab:e4:b5) eth1: attached PHY driver [Generic PHY] (mii_bus:phy_addr=1:03, irq=-1)
Can anyone shed some light on how I might read / write the PHY registers from userspace ?
I've looked at ethtool, but it doesn't appear to work:-
# ethtool eth0 Settings for eth0: Supported ports: [ TP MII ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full Supports auto-negotiation: Yes Advertised link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full Advertised auto-negotiation: Yes Speed: 100Mb/s Duplex: Full Port: MII PHYAD: 1 Transceiver: external Auto-negotiation: on Link detected: yes # ethtool -d eth0 Cannot get register dump: Operation not supported
Anyone got some sample code (I guess using sockets and ioctl calls ?) I could take a look at ?
Thanks Mark
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