Messages in this thread | | | From | Moritz Fischer <> | Date | Thu, 30 Aug 2018 09:39:39 -0700 | Subject | Re: [PATCH net-next 2/3] net: nixge: Add support for having nixge as subdevice |
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Hi Andrew,
On Wed, Aug 29, 2018 at 8:11 PM, Andrew Lunn <andrew@lunn.ch> wrote:
> Could you tell us more about the parent device. I'm guessing PCIe. Is > it x86 so no device tree? Are there cases where it does not have a PHY > connected? What is connected instead? SFP? A switch? Can there be > multiple PHYs on the MDIO bus?
The device is part of a larger FPGA design. One use case that I was trying to support with this patch is PCIe with x86 (hopefully on it's own PF...) Since the whole design isn't completely done, these are the use cases I see upcoming and current:
ARM(64): a) DT: PHY over MDIO (current use case), fixed-link with GPIO (coming) b) DT: SFP (potentially coming)
x86: a) no PHY (coming)-> fixed-link with GPIO b) SFP (potentially), PHY over MDIO (potentially)
Thanks for your help,
Moritz
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