On Thu, 27 Apr 2023 17:00:41 -0300 Fabio Estevam <festevam@xxxxxxxxx> wrote: > Hi Hugo, > > On Thu, Apr 27, 2023 at 4:56 PM Hugo Villeneuve <hugo@xxxxxxxxxxx> wrote: > > > > From: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx> > > > > While testing the ethernet interface on a symphony carrier > > board using an imx8mn SOM with an onboard PHY (EC hardware > > configuration), the ethernet PHY is not detected. > > > > The device tree in Variscite custom linux git repository uses the > > following property: > > > > phy-reset-post-delay = <20>; > > > > Add a new property 'reset-deassert-us' of 20ms to have the same delay > > inside the ethphy handle. > > Which Ethernet PHY does this board use? > > What does its datasheet recommend? Hi Fabio, it uses a ADIN1300 PHY. The datasheet indicate that the "Management interface active (t4)" state is reached at most 5ms after the reset signal is deasserted. Hugo. -- Hugo Villeneuve <hugo@xxxxxxxxxxx>
