Connecting SGMII PHY to eTSEC1 on P1022

Connecting SGMII PHY to eTSEC1 on P1022

[Felix Radensky]

Hi,

On a custom P1022-based board I have SGMII PHY connected to eTSEC1.
PHY address is 0x1. Ethernet works fine in u-boot, but in linux 
there's no link.
I have the following in my device tree:

         mdio@24000 {
             #address-cells = <1>;
             #size-cells = <0>;
             compatible = "fsl,etsec2-mdio";
             reg = <0x24000 0x1000 0xb0030 0x4>;

             phy0: ethernet-phy@1 {
                 interrupt-parent = <&mpic>;
                 interrupts = <3 1>;
                 reg = <0x1>;
             };

             tbi0: tbi-phy@11 {
                 reg = <0x11>;
                 device_type = "tbi-phy";
             };

         };

         enet0: ethernet@B0000 {
             #address-cells = <1>;
             #size-cells = <1>;
             cell-index = <0>;
             device_type = "network";
             model = "eTSEC";
             compatible = "fsl,etsec2";
             fsl,num_rx_queues = <0x8>;
             fsl,num_tx_queues = <0x8>;
             fsl,magic-packet;
             fsl,wake-on-filer;
             clk-handle = <&etsec1_clk>;
             local-mac-address = [ 00 00 00 00 00 00 ];
             interrupt-parent = <&mpic>;
             phy-handle = <&phy0>;
             tbi-handle = <&tbi0>;
             phy-connection-type = "sgmii";
             ...
         };

What am I doing wrong ?

Thanks a lot in advance.

Felix.

Re: Connecting SGMII PHY to eTSEC1 on P1022

[Timur Tabi]

Felix Radensky wrote:
> What am I doing wrong ?

Can you debug the PHY driver to see if it's getting called and trying to talk to
the PHY itself?

-- 
Timur Tabi
Linux kernel developer at Freescale

Re: Connecting SGMII PHY to eTSEC1 on P1022

[Felix Radensky]

Hi Timur,

On 06/22/2011 07:18 PM, Timur Tabi wrote:
> Felix Radensky wrote:
>> What am I doing wrong ?
> Can you debug the PHY driver to see if it's getting called and trying to talk to
> the PHY itself?
>
I'll do that tomorrow and report back.

Thanks.

Felix.

Re: Connecting SGMII PHY to eTSEC1 on P1022

[Felix Radensky]

Hi,

On 06/22/2011 08:12 PM, Felix Radensky wrote:
> Hi Timur,
>
> On 06/22/2011 07:18 PM, Timur Tabi wrote:
>> Felix Radensky wrote:
>>> What am I doing wrong ?
>> Can you debug the PHY driver to see if it's getting called and 
>> trying to talk to
>> the PHY itself?
>>
> I'll do that tomorrow and report back.

I've found the problem by looking at the code. My SGMII PHY is Marvell 
88E1112.
Marvell PHY driver claims it supports that PHY, but in reality it 
doesn't. It uses
routines initially written for 88E1111 to configure 88E1112, 
essentially writing
to registers that do not exist on that PHY. After disabling Marvell 
PHY driver my
PHY started working.

Felix.