On Tue, Jun 09, 2020 at 03:31:40PM +0200, Heiko Stuebner wrote: > From: Heiko Stuebner <heiko.stuebner@xxxxxxxxxxxxxxxxxxxxx> > > At least VSC8530/8531/8540/8541 contain a clock output that can emit > a predefined rate of 25, 50 or 125MHz. > > This may then feed back into the network interface as source clock. > So follow the example the at803x already set and introduce a > vsc8531,clk-out-frequency property to set that output. > > Signed-off-by: Heiko Stuebner <heiko.stuebner@xxxxxxxxxxxxxxxxxxxxx> > --- > Hi Andrew, > > I didn't change the property yet, do you have a suggestion on > how to name it though? Going by the other examples in the > ethernet-phy.yamls, something like enet-phy-clock-out-frequency ? The correct thing to do here is make the phy a clock provider and then the client side use 'assigned-clock-rate' to set the rate. That has the advantage that it also describes the connection of the clock signal. You might not need that for a simple case, but I could imagine needing that in a more complex case. Rob
