The SOC on i.MX6UL and i.MX7 has 2 Ethernet interfaces. The PHY on each may
be connected to separate MDIO busses, or both may be connected on the same
MDIO bus using different PHY addresses. Commit 461c51ad4275 ("Add a phy-num
property to the i.MX FEC emulator") added support for specifying PHY
addresses, but it did not provide support for linking the second PHY on
a given MDIO bus to the other Ethernet interface.
To be able to support two PHY instances on a single MDIO bus, two properties
are needed: First, there needs to be a flag indicating if the MDIO bus on
a given Ethernet interface is connected. If not, attempts to read from this
bus must always return 0xffff. Implement this property as phy-connected.
Second, if the MDIO bus on an interface is active, it needs a link to the
consumer interface to be able to provide PHY access for it. Implement this
property as phy-consumer.
The first patch of the series implements support in hw/net/imx_fec.c.
Patches 2..5 set the necessary properties in i.MX6UL and i.MX7 emulations.
With this series in place, both Ethernet interfaces on affected emulations
are functional.
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Guenter Roeck (5):
hw/net/imx_fec: Support two Ethernet interfaces connected to single MDIO
bus
fsl-imx6ul: Add fec[12]-phy-connected properties
arm/mcimx6ul-evk: Set fec1-phy-connected property to false
fsl-imx7: Add fec[12]-phy-connected properties
arm/mcimx7d-sabre: Set fec2-phy-connected property to false
hw/arm/fsl-imx6ul.c | 20 ++++++++++++++++++++
hw/arm/fsl-imx7.c | 20 ++++++++++++++++++++
hw/arm/mcimx6ul-evk.c | 2 ++
hw/arm/mcimx7d-sabre.c | 2 ++
hw/net/imx_fec.c | 27 +++++++++++++++++++++++----
include/hw/arm/fsl-imx6ul.h | 1 +
include/hw/arm/fsl-imx7.h | 1 +
include/hw/net/imx_fec.h | 2 ++
8 files changed, 71 insertions(+), 4 deletions(-)
