diff options
Diffstat (limited to 'Documentation/devicetree/bindings/net/ethernet-phy.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/net/ethernet-phy.yaml | 57 |
1 files changed, 53 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/net/ethernet-phy.yaml b/Documentation/devicetree/bindings/net/ethernet-phy.yaml index 8fb2a6ee7e5b..bb4c49fc5fd8 100644 --- a/Documentation/devicetree/bindings/net/ethernet-phy.yaml +++ b/Documentation/devicetree/bindings/net/ethernet-phy.yaml @@ -35,9 +35,13 @@ properties: description: PHYs that implement IEEE802.3 clause 45 - pattern: "^ethernet-phy-id[a-f0-9]{4}\\.[a-f0-9]{4}$" description: - If the PHY reports an incorrect ID (or none at all) then the - compatible list may contain an entry with the correct PHY ID - in the above form. + PHYs contain identification registers. These will be read to + identify the PHY. If the PHY reports an incorrect ID, or the + PHY requires a specific initialization sequence (like a + particular order of clocks, resets, power supplies), in + order to be able to read the ID registers, then the + compatible list must contain an entry with the correct PHY + ID in the above form. The first group of digits is the 16 bit Phy Identifier 1 register, this is the chip vendor OUI bits 3:18. The second group of digits is the Phy Identifier 2 register, @@ -93,6 +97,14 @@ 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: @@ -150,6 +162,27 @@ properties: Mark the corresponding energy efficient ethernet mode as broken and request the ethernet to stop advertising it. + timing-role: + $ref: /schemas/types.yaml#/definitions/string + enum: + - forced-master + - forced-slave + - preferred-master + - preferred-slave + description: | + Specifies the timing role of the PHY in the network link. This property is + required for setups where the role must be explicitly assigned via the + device tree due to limitations in hardware strapping or incorrect strap + configurations. + It is applicable to Single Pair Ethernet (1000/100/10Base-T1) and other + PHY types, including 1000Base-T, where it controls whether the PHY should + be a master (clock source) or a slave (clock receiver). + + - 'forced-master': The PHY is forced to operate as a master. + - 'forced-slave': The PHY is forced to operate as a slave. + - 'preferred-master': Prefer the PHY to be master but allow negotiation. + - 'preferred-slave': Prefer the PHY to be slave but allow negotiation. + pses: $ref: /schemas/types.yaml#/definitions/phandle-array maxItems: 1 @@ -203,6 +236,22 @@ properties: PHY's that have configurable TX internal delays. If this property is present then the PHY applies the TX delay. + tx-amplitude-100base-tx-percent: + description: + Transmit amplitude gain applied for 100BASE-TX. 100% matches 2V + peak-to-peak specified in ANSI X3.263. When omitted, the PHYs default + will be left as is. + + mac-termination-ohms: + maximum: 200 + description: + The xMII signals need series termination on the driver side to match both + the output driver impedance and the line characteristic impedance, to + prevent reflections and EMI problems. Select a resistance value which is + supported by the builtin resistors of the PHY, otherwise the resistors may + have to be placed on board. When omitted, the PHYs default will be left as + is. + leds: type: object @@ -221,7 +270,7 @@ properties: reg: maxItems: 1 description: - This define the LED index in the PHY or the MAC. It's really + This defines the LED index in the PHY or the MAC. It's really driver dependent and required for ports that define multiple LED for the same port. |