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|
# SPDX-License-Identifier: (GPL-2.0 OR MIT)
%YAML 1.2
---
$id: http://devicetree.org/schemas/net/dsa/mscc,ocelot.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Microchip Ocelot Switch Family Device Tree Bindings
maintainers:
- Vladimir Oltean <vladimir.oltean@nxp.com>
- Claudiu Manoil <claudiu.manoil@nxp.com>
- Alexandre Belloni <alexandre.belloni@bootlin.com>
- UNGLinuxDriver@microchip.com
description: |
There are multiple switches which are either part of the Ocelot-1 family, or
derivatives of this architecture. These switches can be found embedded in
various SoCs and accessed using MMIO, or as discrete chips and accessed over
SPI or PCIe. The present DSA binding shall be used when the host controlling
them performs packet I/O primarily through an Ethernet port of the switch
(which is attached to an Ethernet port of the host), rather than through
Frame DMA or register-based I/O.
VSC9953 (Seville):
This is found in the NXP T1040, where it is a memory-mapped platform
device.
The following PHY interface types are supported:
- phy-mode = "internal": on ports 8 and 9
- phy-mode = "sgmii": on ports 0, 1, 2, 3, 4, 5, 6, 7
- phy-mode = "qsgmii": on ports 0, 1, 2, 3, 4, 5, 6, 7
- phy-mode = "1000base-x": on ports 0, 1, 2, 3, 4, 5, 6, 7
VSC9959 (Felix):
This is found in the NXP LS1028A. It is a PCI device, part of the larger
enetc root complex. As a result, the ethernet-switch node is a sub-node of
the PCIe root complex node and its "reg" property conforms to the parent
node bindings, describing it as PF 5 of device 0, bus 0.
If any external switch port is enabled, the enetc PF2 (enetc_port2) should
be enabled as well. This is because the internal MDIO bus (exposed through
EA BAR 0) used to access the MAC PCS registers truly belongs to the enetc
port 2 and not to Felix.
The following PHY interface types are supported:
- phy-mode = "internal": on ports 4 and 5
- phy-mode = "sgmii": on ports 0, 1, 2, 3
- phy-mode = "qsgmii": on ports 0, 1, 2, 3
- phy-mode = "usxgmii": on ports 0, 1, 2, 3
- phy-mode = "1000base-x": on ports 0, 1, 2, 3
- phy-mode = "2500base-x": on ports 0, 1, 2, 3
properties:
compatible:
enum:
- mscc,vsc9953-switch
- pci1957,eef0
reg:
maxItems: 1
interrupts:
maxItems: 1
description:
Used to signal availability of PTP TX timestamps, and state changes of
the MAC merge layer of ports that support Frame Preemption.
little-endian: true
big-endian: true
required:
- compatible
- reg
allOf:
- $ref: dsa.yaml#
- if:
properties:
compatible:
const: pci1957,eef0
then:
required:
- interrupts
unevaluatedProperties: false
examples:
# Felix VSC9959 (NXP LS1028A)
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
pcie { /* Integrated Endpoint Root Complex */
#address-cells = <3>;
#size-cells = <2>;
ethernet-switch@0,5 {
compatible = "pci1957,eef0";
reg = <0x000500 0 0 0 0>;
interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
ethernet-ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
phy-mode = "qsgmii";
phy-handle = <&phy0>;
managed = "in-band-status";
};
port@1 {
reg = <1>;
phy-mode = "qsgmii";
phy-handle = <&phy1>;
managed = "in-band-status";
};
port@2 {
reg = <2>;
phy-mode = "qsgmii";
phy-handle = <&phy2>;
managed = "in-band-status";
};
port@3 {
reg = <3>;
phy-mode = "qsgmii";
phy-handle = <&phy3>;
managed = "in-band-status";
};
port@4 {
reg = <4>;
ethernet = <&enetc_port2>;
phy-mode = "internal";
fixed-link {
speed = <2500>;
full-duplex;
pause;
};
};
port@5 {
reg = <5>;
ethernet = <&enetc_port3>;
phy-mode = "internal";
fixed-link {
speed = <1000>;
full-duplex;
pause;
};
};
};
};
};
# Seville VSC9953 (NXP T1040)
- |
soc {
#address-cells = <1>;
#size-cells = <1>;
ethernet-switch@800000 {
compatible = "mscc,vsc9953-switch";
reg = <0x800000 0x290000>;
little-endian;
ethernet-ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
phy-mode = "qsgmii";
phy-handle = <&phy0>;
managed = "in-band-status";
};
port@1 {
reg = <1>;
phy-mode = "qsgmii";
phy-handle = <&phy1>;
managed = "in-band-status";
};
port@2 {
reg = <2>;
phy-mode = "qsgmii";
phy-handle = <&phy2>;
managed = "in-band-status";
};
port@3 {
reg = <3>;
phy-mode = "qsgmii";
phy-handle = <&phy3>;
managed = "in-band-status";
};
port@4 {
reg = <4>;
phy-mode = "qsgmii";
phy-handle = <&phy4>;
managed = "in-band-status";
};
port@5 {
reg = <5>;
phy-mode = "qsgmii";
phy-handle = <&phy5>;
managed = "in-band-status";
};
port@6 {
reg = <6>;
phy-mode = "qsgmii";
phy-handle = <&phy6>;
managed = "in-band-status";
};
port@7 {
reg = <7>;
phy-mode = "qsgmii";
phy-handle = <&phy7>;
managed = "in-band-status";
};
port@8 {
reg = <8>;
phy-mode = "internal";
ethernet = <&enet0>;
fixed-link {
speed = <2500>;
full-duplex;
pause;
};
};
port@9 {
reg = <9>;
phy-mode = "internal";
ethernet = <&enet1>;
fixed-link {
speed = <2500>;
full-duplex;
pause;
};
};
};
};
};
|
