1* Wiznet w5x00 2 3This is a standalone 10/100 MBit Ethernet controller with SPI interface. 4 5For each device connected to a SPI bus, define a child node within 6the SPI master node. 7 8Required 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 23Optional 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 30Example (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}; 51