diff options
Diffstat (limited to 'Documentation/devicetree/bindings/net/nxp,tja11xx.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/net/nxp,tja11xx.yaml | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/nxp,tja11xx.yaml b/Documentation/devicetree/bindings/net/nxp,tja11xx.yaml index d51da24f3505..85bfa45f5122 100644 --- a/Documentation/devicetree/bindings/net/nxp,tja11xx.yaml +++ b/Documentation/devicetree/bindings/net/nxp,tja11xx.yaml @@ -20,6 +20,7 @@ allOf: patternProperties: "^ethernet-phy@[0-9a-f]+$": type: object + additionalProperties: false description: | Some packages have multiple PHYs. Secondary PHY should be defines as subnode of the first (parent) PHY. @@ -31,6 +32,22 @@ patternProperties: description: The ID number for the child PHY. Should be +1 of parent PHY. + nxp,rmii-refclk-in: + type: boolean + description: | + The REF_CLK is provided for both transmitted and received data + in RMII mode. This clock signal is provided by the PHY and is + typically derived from an external 25MHz crystal. Alternatively, + a 50MHz clock signal generated by an external oscillator can be + connected to pin REF_CLK. A third option is to connect a 25MHz + clock to pin CLK_IN_OUT. So, the REF_CLK should be configured + as input or output according to the actual circuit connection. + If present, indicates that the REF_CLK will be configured as + interface reference clock input when RMII mode enabled. + If not present, the REF_CLK will be configured as interface + reference clock output when RMII mode enabled. + Only supported on TJA1100 and TJA1101. + required: - reg @@ -44,6 +61,7 @@ examples: tja1101_phy0: ethernet-phy@4 { reg = <0x4>; + nxp,rmii-refclk-in; }; }; - | |