diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2023-03-15 07:52:44 -0700 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2023-04-20 10:25:43 +0100 |
| commit | df3f5efe108e4787187133dda05112d32a1b87e8 (patch) | |
| tree | fc9c4aab343174251f2b52a3e6c6469cfded8570 /include | |
| parent | 7bdd67a56036123b52048af45d304a2c926daa8a (diff) | |
hw/net/imx_fec: Support two Ethernet interfaces connected to single MDIO bus
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.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Message-id: 20230315145248.1639364-2-linux@roeck-us.net
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/net/imx_fec.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/hw/net/imx_fec.h b/include/hw/net/imx_fec.h index e3a8755db9..2d13290c78 100644 --- a/include/hw/net/imx_fec.h +++ b/include/hw/net/imx_fec.h @@ -270,6 +270,8 @@ struct IMXFECState { uint32_t phy_int; uint32_t phy_int_mask; uint32_t phy_num; + bool phy_connected; + struct IMXFECState *phy_consumer; bool is_fec; |