106 lines
2.4 KiB
YAML
106 lines
2.4 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/phy/xlnx,zynqmp-psgtr.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Xilinx ZynqMP Gigabit Transceiver PHY Device Tree Bindings
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maintainers:
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- Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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description: |
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This binding describes the Xilinx ZynqMP Gigabit Transceiver (GTR) PHY. The
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GTR provides four lanes and is used by USB, SATA, PCIE, Display port and
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Ethernet SGMII controllers.
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properties:
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"#phy-cells":
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const: 4
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description: |
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The cells contain the following arguments.
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- description: The GTR lane
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minimum: 0
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maximum: 3
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- description: The PHY type
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enum:
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- PHY_TYPE_DP
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- PHY_TYPE_PCIE
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- PHY_TYPE_SATA
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- PHY_TYPE_SGMII
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- PHY_TYPE_USB
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- description: The PHY instance
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minimum: 0
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maximum: 1 # for DP, SATA or USB
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maximum: 3 # for PCIE or SGMII
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- description: The reference clock number
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minimum: 0
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maximum: 3
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compatible:
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enum:
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- xlnx,zynqmp-psgtr-v1.1
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- xlnx,zynqmp-psgtr
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clocks:
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minItems: 1
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maxItems: 4
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description: |
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Clock for each PS_MGTREFCLK[0-3] reference clock input. Unconnected
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inputs shall not have an entry.
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clock-names:
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minItems: 1
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maxItems: 4
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items:
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pattern: "^ref[0-3]$"
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reg:
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items:
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- description: SERDES registers block
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- description: SIOU registers block
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reg-names:
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items:
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- const: serdes
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- const: siou
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xlnx,tx-termination-fix:
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description: |
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Include this for fixing functional issue with the TX termination
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resistance in GT, which can be out of spec for the XCZU9EG silicon
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version.
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type: boolean
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required:
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- "#phy-cells"
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- compatible
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- reg
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- reg-names
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if:
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properties:
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compatible:
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const: xlnx,zynqmp-psgtr-v1.1
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then:
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properties:
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xlnx,tx-termination-fix: false
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additionalProperties: false
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examples:
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- |
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phy: phy@fd400000 {
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compatible = "xlnx,zynqmp-psgtr-v1.1";
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reg = <0xfd400000 0x40000>,
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<0xfd3d0000 0x1000>;
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reg-names = "serdes", "siou";
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clocks = <&refclks 3>, <&refclks 2>, <&refclks 0>;
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clock-names = "ref1", "ref2", "ref3";
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#phy-cells = <4>;
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};
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...
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