On Sat, Sep 26, 2020 at 12:15:59AM +0200, Martin Blumenstingl wrote: > I do not need the auto-detection of the phy-mode nor any RX/TX delay > (these are fixed values) > however, from that patch-set I would need most of > phy_rgmii_probe_interface() (and all of the helpers it's using)
So if it's not clock skews and it probably isn't equalization either, since to my knowledge RGMII MACs won't have because they are parallel and relatively low-speed interfaces, then we need to know what exactly it is that you calibrate. As you know, in a serial interface you are likely to find a BIST function implemented in the SERDES, this would basically offload to hardware the task of sending and decoding test patterns such as PRBS-11. With RGMII, you are less likely to see a BIST in hardware, hence the manual injection of packets that you need to do from software. Whatever solution you end up choosing, it would be nice if it created a nicely structured UAPI that could be extended in the future for other types of electrical interface selftests. > also I'm wondering if the "protocol" 0x0808 is recommended over ETH_P_EDSA It probably doesn't make any difference.
