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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/phy/xlnx,zynqmp-psgtr.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Xilinx ZynqMP Gigabit Transceiver PHY Device Tree Bindings
maintainers:
- Laurent Pinchart <laurent.pinchart@ideasonboard.com>
description: |
This binding describes the Xilinx ZynqMP Gigabit Transceiver (GTR) PHY. The
GTR provides four lanes and is used by USB, SATA, PCIE, Display port and
Ethernet SGMII controllers.
properties:
"#phy-cells":
const: 4
description: |
The cells contain the following arguments.
- description: The GTR lane
minimum: 0
maximum: 3
- description: The PHY type
enum:
- PHY_TYPE_DP
- PHY_TYPE_PCIE
- PHY_TYPE_SATA
- PHY_TYPE_SGMII
- PHY_TYPE_USB3
- description: The PHY instance
minimum: 0
maximum: 1 # for DP, SATA or USB
maximum: 3 # for PCIE or SGMII
- description: The reference clock number
minimum: 0
maximum: 3
compatible:
enum:
- xlnx,zynqmp-psgtr-v1.1
- xlnx,zynqmp-psgtr
clocks:
minItems: 1
maxItems: 4
description: |
Clock for each PS_MGTREFCLK[0-3] reference clock input. Unconnected
inputs shall not have an entry.
clock-names:
minItems: 1
maxItems: 4
items:
pattern: "^ref[0-3]$"
reg:
items:
- description: SERDES registers block
- description: SIOU registers block
reg-names:
items:
- const: serdes
- const: siou
xlnx,tx-termination-fix:
description: |
Include this for fixing functional issue with the TX termination
resistance in GT, which can be out of spec for the XCZU9EG silicon
version.
type: boolean
required:
- "#phy-cells"
- compatible
- reg
- reg-names
if:
properties:
compatible:
const: xlnx,zynqmp-psgtr-v1.1
then:
properties:
xlnx,tx-termination-fix: false
additionalProperties: false
examples:
- |
phy: phy@fd400000 {
compatible = "xlnx,zynqmp-psgtr-v1.1";
reg = <0xfd400000 0x40000>,
<0xfd3d0000 0x1000>;
reg-names = "serdes", "siou";
clocks = <&refclks 3>, <&refclks 2>, <&refclks 0>;
clock-names = "ref1", "ref2", "ref3";
#phy-cells = <4>;
};
...
|
