mirror of
https://github.com/torvalds/linux.git
synced 2024-12-28 13:51:44 +00:00
7e113321ec
The lan911x family of devices require supplying from 3.3 V power supplies (connected to VDD_IO, VDD_A and VREG_3.3 pins). The existing driver however obtains only VDD_IO and VDD_A regulators in an optional way so document this in bindings. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
44 lines
1.8 KiB
Plaintext
44 lines
1.8 KiB
Plaintext
* Smart Mixed-Signal Connectivity (SMSC) LAN911x/912x Controller
|
|
|
|
Required properties:
|
|
- compatible : Should be "smsc,lan<model>", "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;
|
|
};
|