Add documentation for selecting reference rmii clock on KSZ88X3 devices Signed-off-by: Ante Knezic <ante.knezic@xxxxxxxxxxx> --- .../devicetree/bindings/net/dsa/microchip,ksz.yaml | 38 +++++++++++++++++++++- 1 file changed, 37 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml index b3029c64d0d5..3cebb9c9b1c8 100644 --- a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml +++ b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml @@ -11,7 +11,6 @@ maintainers: - Woojung Huh <Woojung.Huh@xxxxxxxxxxxxx> allOf: - - $ref: dsa.yaml#/$defs/ethernet-ports - $ref: /schemas/spi/spi-peripheral-props.yaml# properties: @@ -78,6 +77,43 @@ required: - compatible - reg +if: + not: + properties: + compatible: + enum: + - microchip,ksz8863 + - microchip,ksz8873 +then: + $ref: dsa.yaml#/$defs/ethernet-ports +else: + patternProperties: + "^(ethernet-)?ports$": + patternProperties: + "^(ethernet-)?port@[0-2]$": + $ref: dsa-port.yaml# + properties: + microchip,rmii-clk-internal: + $ref: /schemas/types.yaml#/definitions/flag + description: + When ksz88x3 is acting as clock provier (via REFCLKO) it + can select between internal and external RMII reference + clock. Internal reference clock means that the clock for + the RMII of ksz88x3 is provided by the ksz88x3 internally + and the REFCLKI pin is unconnected. For the external + reference clock, the clock needs to be fed back to ksz88x3 + via REFCLKI. + If microchip,rmii-clk-internal is set, ksz88x3 will provide + rmii reference clock internally, otherwise reference clock + should be provided externally. + if: + not: + required: [ ethernet ] + then: + properties: + microchip,rmii-clk-internal: false + unevaluatedProperties: false + unevaluatedProperties: false examples: -- 2.11.0
