Can't find Ethernet PHY on MDIO bus

Can't find Ethernet PHY on MDIO bus

[Juliano Maia]

[-- Attachment #1: Type: text/plain, Size: 1972 bytes --]

Hi.

I have 2 Ethernet PHYs connected to Powerpc MPC8313 TSEC1 and TSEC2
interfaces. The PHY I'm having trouble with is a Marvell 88E3015, and its
connected to TSEC2. I have mapped them in DTS file as follows:

mdio@24520 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "fsl,gianfar-mdio";
reg = <0x24520 0x20>;
phy3: ethernet-phy@3 {
reg = <0x3>;
device_type = "ethernet-phy";
};
phy1: ethernet-phy@1 {
interrupt-parent = <&ipic>;
interrupts = <24 0x8>;
reg = <0x1>;
device_type = "ethernet-phy";
};
};

enet0: ethernet@24000 {
cell-index = <0>;
device_type = "network";
compatible = "gianfar";
reg = <0x24000 0x1000>;
model = "eTSEC";
local-mac-address = [ 00 00 00 00 00 00 ];
interrupts = <32 0x8 33 0x8 34 0x8>;
interrupt-parent = <&ipic>;
fixed-link = <3 1 100 1 0>;
linux,network-index = <0>;
};

enet1: ethernet@25000 {
#address-cells = <1>;
#size-cells = <1>;

cell-index = <1>;
device_type = "network";
model = "eTSEC";
compatible = "gianfar";
reg = <0x25000 0x1000>;
local-mac-address = [ 00 a0 3e a8 a6 6E ];
interrupts = <35 0x8 36 0x8 37 0x8>;
interrupt-parent = <&ipic>;
phy-handle = < &phy1 >;
};

The problem is I'm not being able to set *ETH1* up. When i try, say "*ifconfig
eth1 up*" i got:
*vmunix: Trying to connect phy mdio@e0024520:01
vmunix: eth1: Could not attach to PHY*

I've tried to track this error down and found that the it raises from *
bus_find_device_by_name* function at *bus.c*. For some reason ETH1 is never
added do *devices_kset* for MDIO bus. It only contains an entry for ETH0,
which is 00:3.

What could be wrong? In a hardware point of view, this PHY seems to be OK,
since I've made some tests from U-boot command line trying some MDIO
commands. I've also checked MDIO pins with oscilloscope and everything seems
to be fine. But during Linux initialization I could not see any activity in
MDIO pins. Is that normal? Is there any other files I should change (other
than DTS) to make PHYs work?


Thanks

-- 
Juliano Maia

[-- Attachment #2: Type: text/html, Size: 2907 bytes --]