Re: Altera TSE driver not working in 100mbps mode

Petko Manolov
2019-12-03T09:29:23Z

All right, the first message got ignored so this is my take two. :)

Has anyone stumbled on the same problem as me?

cheers,
Petko

On 19-11-27 15:54:19, Petko Manolov wrote:
> Hi Thor,
>
> In my effort to move Altera TSE driver from PHYLIB to PHYLINK i ran into a
> problem. The driver would not work properly on 100Mbit/s links. This is true
> for the original driver in linux-5.4.y as well as for my PHYLINK/SFP enabled
> version.
>
> This is a DT fragment of what i've been trying with 5.4.y kernels and the
> stock driver:
>
> tse_sub_2: ethernet@0xc0300000 {
> status = "disabled";
>
> compatible = "altr,tse-msgdma-1.0";
> reg = <0xc0300000 0x00000400>,
> <0xc0301000 0x00000020>,
> <0xc0302000 0x00000020>,
> <0xc0303000 0x00000008>,
> <0xc0304000 0x00000020>,
> <0xc0305000 0x00000020>;
> reg-names = "control_port", "rx_csr", "rx_desc", "rx_resp", "tx_csr", "tx_desc";
> interrupt-parent =< &intc >;
> interrupts = <0 54 4>, <0 55 4>;
> interrupt-names = "rx_irq", "tx_irq";
> rx-fifo-depth = <2048>;
> tx-fifo-depth = <2048>;
> address-bits = <48>;
> max-frame-size = <1500>;
> local-mac-address = [ 00 0C ED 00 00 06 ];
> altr,has-supplementary-unicast;
> altr,has-hash-multicast-filter;
> phy-handle = <0>;
> fixed-link {
> speed = <1000>;
> full-duplex;
> };
> };
>
> Trying "speed = <100>;" above also doesn't change much, except that the link is
> reported (as expected) as 100Mbps.
>
> With the PHYLINK code the above fragment is pretty much the same except for:
>
> sfp = <&sfp0>;
> phy-mode = "sgmii";
> managed = "in-band-status";
>
> Both (old and new) drivers are working fine on 1Gbps links with optics and
> copper SFPs. With PHYLINK code (and in auto-negotiation mode) the link speed
> and duplex is properly detected as 100Mbps. MAC and PCS also look correctly set
> up, but the device is still unable to receive or transmit packages.
>
>
> Please let me know should you need more details.
>
>
> thanks,
> Petko
>