Introduction

This page describes the Xilinx GMII2RGMII converter IP which can be found at /drivers/net/phy/xilinx_gmii2rgmii.c
This converter can be used with any MAC device, either axi ethernet or Zynq/Zynq Ultrascale+ MPSoC GEM.
Paths, files, links and documentation on this page are given relative to the Linux kernel source tree.

HW IP features

GMII2RGMII conversion

Features supported in driver

GMII2RGMII conversion

Missing Features, Known Issues and Limitations

None

Kernel Configuration

This following config option is required to enable this converter driver:
XILINX_GMII2RGMII

Devicetree

mdio {
    #address-cells = <1>;
    #size-cells = <0>;
    phy: ethernet-phy@0 {
        ......
    };
    gmiitorgmii: gmiitorgmii@8 {
        compatible = "xlnx,gmii-to-rgmii-1.0";
        reg = <8>;
        phy-handle = <&phy>;
    };
};

Test Procedure

This phy can be tested with any MAC using general ethernet test procedures like ping, iperf/netperf.
Refer to http://www.wiki.xilinx.com/Macb+Driver#Test Procedure

Mainline status

This driver is currently in sync with mainline except for the following diff:

Minor warning fix for mdiobus_return (1 line)
Change Log
2020.2
Summary
Minor warning fix
Commits:
https://github.com/Xilinx/linux-xlnx/commits/xilinx-v2020.2/drivers/net/phy/xilinx_gmii2rgmii.c
2020.1
Summary
Minor bugfix to sync priv field usage with mainline driver
Commits:
https://github.com/Xilinx/linux-xlnx/commits/xilinx-v2020.1/drivers/net/phy/xilinx_gmii2rgmii.c
2019.2
Summary
- Bug fixes
Commits:
b145197 net: gmii2rgmii: do not attach if phy has a priv field
a233487 net: gmii2rgmii: Switch priv field in mdio device structure

2019.1

Summary

Bug fixes

Commits:

b6c2c44 net: gmii2rgmii: Add check before calling phy read status

2018.3

Summary:

Bug fixes

Commits:

316b316 net: phy: xgmiitorgmii: Use correct mdio bus
ce6851a net: phy: xgmiitorgmii: Check read_status results

2018.2
Summary:

Enable gmii2rgmii in ZynqMP defconfig and fix an error when external phy driver is not registered.

Commits:
c2ba891 arm64: zynqmp: Enable GMII2RGMII driver in ZynqMP defconfig
d937ecc phy: gmii2rgmii: Add check for external phy driver

2018.1
None

2017.4
None

2017.3

Summary:

Bugfix

Commits:
7eb5f81 net: phy: Fix mask value write on gmii2rgmii converter speed register

2017.2
None

2017.1
None

Table of Contents