- Smart Mixed-Signal Connectivity (SMSC) LAN911x/912x Controller
Required properties:
- compatible : Should be “smsc,lan
“, “smsc,lan9115” - reg : Address and length of the io space for SMSC LAN
- interrupts : one or two interrupt specifiers
- The first interrupt is the SMSC LAN interrupt line
- The second interrupt (if present) is the PME (power
management event) interrupt that is able to wake up the host
system with a 50ms pulse on network activity
- phy-mode : See ethernet.txt file in the same directory
Optional properties:
- reg-shift : Specify the quantity to shift the register offsets by
- reg-io-width : Specify the size (in bytes) of the IO accesses that
should be performed on the device. Valid value for SMSC LAN is
2 or 4. If it’s omitted or invalid, the size would be 2. - smsc,irq-active-high : Indicates the IRQ polarity is active-high
- smsc,irq-push-pull : Indicates the IRQ type is push-pull
- smsc,force-internal-phy : Forces SMSC LAN controller to use
internal PHY - smsc,force-external-phy : Forces SMSC LAN controller to use
external PHY - smsc,save-mac-address : Indicates that mac address needs to be saved
before resetting the controller - reset-gpios : a GPIO line connected to the RESET (active low) signal
of the device. On many systems this is wired high so the device goes
out of reset at power-on, but if it is under program control, this
optional GPIO can wake up in response to it. - vdd33a-supply, vddvario-supply : 3.3V analog and IO logic power supplies
Examples:
lan9220@f4000000 {
compatible = “smsc,lan9220”, “smsc,lan9115”;
reg = <0xf4000000 0x2000000>;
phy-mode = “mii”;
interrupt-parent = <&gpio1>;
interrupts = <31>, <32>;
reset-gpios = <&gpio1 30 GPIO_ACTIVE_LOW>;
reg-io-width = <4>;
smsc,irq-push-pull;
};
