On 12/11/25 8:56 PM, Andrew Lunn wrote:
On Thu, Dec 11, 2025 at 08:47:44PM +0100, Ivan Vecera wrote:
Ethernet controllers may be connected to DPLL (Digital Phase Locked Loop)
pins for frequency synchronization purposes, such as in Synchronous
Ethernet (SyncE) configurations.
Add 'dpll-pins' and 'dpll-pin-names' properties to the generic
ethernet-controller schema. This allows describing the physical
connections between the Ethernet controller and the DPLL subsystem pins
in the Device Tree, enabling drivers to request and manage these
resources.
Please include a .dts patch in the series which actually makes use of
these new properties.
Andrew
Hi Andy,
I would include this but the development of this series was done on
Microchip EVB-LAN9668 EDS2 development board [1] and its DTS is not
present in upstream tree. The base DTS for this board is at vendor's
github repo [2]. The second development environment was/is ACPI based
Intel GNR-D platform and the goal is to use unified fwnode API so
ACPI is providing _DSD nodes to specify dpll-pin-names and dpll-names
properties.
Ivan
[1] https://www.microchip.com/en-us/development-tool/ev83e85a
[2]
https://github.com/microchip-ung/linux/blob/bsp-6.12-2025/arch/arm/boot/dts/microchip/lan966x-pcb8385.dts
