Re: [PATCH net-next 4/8] net: dsa: lan9645x: add basic dsa driver for LAN9645X

On Fri, 2026-03-06 at 17:33 +0100, Andrew Lunn wrote:

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On Fri, Mar 06, 2026 at 04:03:36PM +0100, Jens Emil Schulz Ostergaard wrote:

quoted

On Thu, 2026-03-05 at 18:37 +0100, Andrew Lunn wrote:

quoted

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However, this is a multi-giga switch, with high speed SERDES ports. My
guess is, a SERDES port is used to connect to the host, not RGMII. So
i would not implement this, until somebody reports having a board with
RGMII connecting to the host. KISS.

We intend to do exactly that with this switch, just because the host
doesn't support SGMII, just RMII/RGMII.

:-)

Then i suggest using {rx|tx}-internal-delay-ps as Vladimir suggested.

     Andrew

OK, I will use {rx|tx}-internal-delay-ps instead. I can add that the
current EVB board for lan9645x also uses RGMI mac2mac to the host, so there
are already users who would appreciate this. This is the LAN96459 EDS2
Daughter Card with part number EV14H52A.

O.K. Do you plan to add a DT file for this? Since it is a daughter
card, is it a DT overlay? I see there is an I2C EEPROM, used for board
identification. So that tells you which overlay to load?

        Andrew

Yes, we would like to add a DT, and it would be an as an overlay. I believe
the EEPROM was intended for the firmware in unmanaged mode. We do not use
it for managed mode at the moment.

Thanks,
Emil