1 * Wiznet w5x00
2
3 This is a standalone 10/100 MBit Ethernet controller with SPI interface.
4
5 For each device connected to a SPI bus, define a child node within
6 the SPI master node.
7
8 Required properties:
9 - compatible: Should be one of the following strings:
10 "wiznet,w5100"
11 "wiznet,w5200"
12 "wiznet,w5500"
13 - reg: Specify the SPI chip select the chip is wired to.
14 - interrupts: Specify the interrupt index within the interrupt controller (referred
15 to above in interrupt-parent) and interrupt type. w5x00 natively
16 generates falling edge interrupts, however, additional board logic
17 might invert the signal.
18 - pinctrl-names: List of assigned state names, see pinctrl binding documentation.
19 - pinctrl-0: List of phandles to configure the GPIO pin used as interrupt line,
20 see also generic and your platform specific pinctrl binding
21 documentation.
22
23 Optional properties:
24 - spi-max-frequency: Maximum frequency of the SPI bus when accessing the w5500.
25 According to the w5500 datasheet, the chip allows a maximum of 80 MHz, however,
26 board designs may need to limit this value.
27 - local-mac-address: See ethernet.txt in the same directory.
28
29
30 Example (for Raspberry Pi with pin control stuff for GPIO irq):
31
32 &spi {
33 ethernet@0: w5500@0 {
34 compatible = "wiznet,w5500";
35 reg = <0>;
36 pinctrl-names = "default";
37 pinctrl-0 = <ð1_pins>;
38 interrupt-parent = <&gpio>;
39 interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
40 spi-max-frequency = <30000000>;
41 };
42 };
43
44 &gpio {
45 eth1_pins: eth1_pins {
46 brcm,pins = <25>;
47 brcm,function = <0>; /* in */
48 brcm,pull = <0>; /* none */
49 };
50 };
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