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-rw-r--r--Documentation/devicetree/bindings/net/smsc911x.txt15
1 files changed, 11 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/net/smsc911x.txt b/Documentation/devicetree/bindings/net/smsc911x.txt
index 3fed3c124411..16c3a9501f5d 100644
--- a/Documentation/devicetree/bindings/net/smsc911x.txt
+++ b/Documentation/devicetree/bindings/net/smsc911x.txt
@@ -3,9 +3,11 @@
Required properties:
- compatible : Should be "smsc,lan<model>", "smsc,lan9115"
- reg : Address and length of the io space for SMSC LAN
-- interrupts : Should contain SMSC LAN interrupt line
-- interrupt-parent : Should be the phandle for the interrupt controller
- that services interrupts for this device
+- 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:
@@ -21,6 +23,10 @@ Optional properties:
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.
Examples:
@@ -29,7 +35,8 @@ lan9220@f4000000 {
reg = <0xf4000000 0x2000000>;
phy-mode = "mii";
interrupt-parent = <&gpio1>;
- interrupts = <31>;
+ interrupts = <31>, <32>;
+ reset-gpios = <&gpio1 30 GPIO_ACTIVE_LOW>;
reg-io-width = <4>;
smsc,irq-push-pull;
};