Re: [RFC PATCH 1/2] dt-bindings: net: macb: Add new property for PS SGMII only

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, Aug 05, 2019 at 11:45:05AM +0530, Harini Katakam wrote:
> Hi Andrew,
> 
> On Sun, Aug 4, 2019 at 8:26 PM Andrew Lunn <andrew@xxxxxxx> wrote:
> >
> > On Wed, Jul 31, 2019 at 03:10:32PM +0530, Harini Katakam wrote:
> > > Add a new property to indicate when PS SGMII is used with NO
> > > external PHY on board.
> >
> > Hi Harini
> >
> > What exactly is you use case? Are you connecting to a Ethernet switch?
> > To an SFP cage with a copper module?
> 
> Yes, an SFP cage is the common HW target for this patch.

Hi Harini

So you have a copper PHY in the SFP cage. It will talk SGMII
signalling to your PS SGMII. When that signalling is complete i would
expect the MAC to raise an interrupt, just as if the SGMII PHY was
soldered on the board. So i don't see why you need this polling?

       Andrew



[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]


  Powered by Linux