Commit 775631d7 authored by Kamil Horák (2N)'s avatar Kamil Horák (2N) Committed by Jakub Kicinski
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dt-bindings: ethernet-phy: add optional brr-mode flag 



There is a group of PHY chips supporting BroadR-Reach link modes in
a manner allowing for more or less identical register usage as standard
Clause 22 PHY.
These chips support standard Ethernet link modes as well, however, the
circuitry is mutually exclusive and cannot be auto-detected.
The link modes in question are 100Base-T1 as defined in IEEE802.3bw,
based on Broadcom's 1BR-100 link mode, and newly defined 10Base-T1BRR
(1BR-10 in Broadcom documents).

Add optional brr-mode flag to switch the PHY to BroadR-Reach mode.

Signed-off-by: default avatarKamil Horák (2N) <kamilh@axis.com>
Reviewed-by: default avatarRob Herring (Arm) <robh@kernel.org>
Reviewed-by: default avatarFlorian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20240712150709.3134474-4-kamilh@axis.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent ff253875

Documentation/devicetree/bindings/net/ethernet-phy.yaml

+8 −0
Original line number Diff line number Diff line
@@ -93,6 +93,14 @@ properties: 
      the turn around line low at end of the control phase of the

      MDIO transaction.



  brr-mode:

    $ref: /schemas/types.yaml#/definitions/flag

    description:

      If set, indicates the network cable interface is an alternative one as

      defined in the BroadR-Reach link mode specification under 1BR-100 and

      1BR-10 names. The PHY must be configured to operate in BroadR-Reach mode

      by software.



  clocks:

    maxItems: 1

    description: