@@ -16,8 +16,37 @@ description: |
allOf:
- $ref: ethernet-phy.yaml#
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - ethernet-phy-id004d.d0c0
+
+ then:
+ properties:
+ reg:
+ const: 7 # This PHY is always at MDIO address 7 in the IPQ5018 SoC
+
+ resets:
+ items:
+ - description:
+ GE PHY MISC reset which triggers a reset across MDC, DSP, RX, and TX lines.
+
+ qcom,dac-preset-short-cable:
+ description:
+ Set if this phy is connected to another phy to adjust the values for
+ MDAC and EDAC to adjust amplitude, bias current settings, and error
+ detection and correction algorithm to accommodate for short cable length.
+ If not set, DAC values are not modified and it is assumed the MDI output pins
+ of this PHY are directly connected to an RJ45 connector.
+ type: boolean
properties:
+ compatible:
+ enum:
+ - ethernet-phy-id004d.d0c0
+
qca,clk-out-frequency:
description: Clock output frequency in Hertz.
$ref: /schemas/types.yaml#/definitions/uint32
@@ -132,3 +161,17 @@ examples:
};
};
};
+ - |
+ #include <dt-bindings/reset/qcom,gcc-ipq5018.h>
+
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ge_phy: ethernet-phy@7 {
+ compatible = "ethernet-phy-id004d.d0c0";
+ reg = <7>;
+
+ resets = <&gcc GCC_GEPHY_MISC_ARES>;
+ };
+ };
Document the IPQ5018 Internal Gigabit Ethernet PHY found in the IPQ5018 SoC. Its output pins provide an MDI interface to either an external switch in a PHY to PHY link scenario or is directly attached to an RJ45 connector. The PHY supports 10/100/1000 mbps link modes, CDT, auto-negotiation and 802.3az EEE. For operation, the LDO controller found in the IPQ5018 SoC for which there is provision in the mdio-4019 driver. Two common archictures across IPQ5018 boards are: 1. IPQ5018 PHY --> MDI --> RJ45 connector 2. IPQ5018 PHY --> MDI --> External PHY In a phy to phy architecture, the DAC needs to be configured to accommodate for the short cable length. As such, add an optional boolean property so the driver sets preset DAC register values accordingly. Signed-off-by: George Moussalem <george.moussalem@outlook.com> --- .../devicetree/bindings/net/qca,ar803x.yaml | 43 ++++++++++++++++++++++ 1 file changed, 43 insertions(+)