Hi Sven, On Thu, Jun 25, 2020 at 11:01 AM Sven Van Asbroeck <[email protected]> wrote: > > On imx6, the ethernet reference clock (clk_enet_ref) can be generated > by either the imx6, or an external source (e.g. an oscillator or the > PHY). When generated by the imx6, the clock source (from ANATOP) > must be routed to the input of clk_enet_ref via two pads on the SoC, > typically via a dedicated track on the PCB. > > On an imx6 plus however, there is a new setting which enables this > clock to be routed internally on the SoC, from its ANATOP clock > source, straight to clk_enet_ref, without having to go through > the SoC pads. > > Board designs where the clock is generated by the imx6 should not > be affected by routing the clock internally. Therefore on a plus, > we can enable internal routing by default. > > Signed-off-by: Sven Van Asbroeck <[email protected]>
I have tested this series on an imx6qp sabresd and unfortunately, it breaks Ethernet as I can no longer get an IP address from the DHCP server. Without this series, IP address can normally be retrieved. Therefore I suggest to create a device tree property for this feature and only enable it when such device tree property is present.
