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dt-bindings: ethernet-phy: add MII-Lite phy interface type

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Some Broadcom PHYs are capable to operate in simplified MII mode,
without TXER, RXER, CRS and COL signals as defined for the MII.
The MII-Lite mode can be used on most Ethernet controllers with full
MII interface by just leaving the input signals (RXER, CRS, COL)
inactive. The absence of COL signal makes half-duplex link modes
impossible but does not interfere with BroadR-Reach link modes on
Broadcom PHYs, because they are all full-duplex only.

Add new interface type "mii-lite" to phy-connection-type enum.

Signed-off-by: Kamil Horák - 2N <kamilh@axis.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250708090140.61355-3-kamilh@axis.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Kamil Horák - 2N 2025-07-08 11:01:38 +02:00 • committed by Jakub Kicinski
parent 67c0170566
commit fbe937473f
1 changed files with 1 additions and 0 deletions
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1
Documentation/devicetree/bindings/net/ethernet-controller.yaml
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@ -39,6 +39,7 @@ properties:
# MAC.
- internal
- mii
- mii-lite
- gmii
- sgmii
- psgmii