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Commit | Line | Data |
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2dd355a0 MH |
1 | * Microchip ENC28J60 |
2 | ||
3 | This is a standalone 10 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 "microchip,enc28j60" | |
10 | - reg: Specify the SPI chip select the ENC28J60 is wired to | |
2dd355a0 MH |
11 | - interrupts: Specify the interrupt index within the interrupt controller (referred |
12 | to above in interrupt-parent) and interrupt type. The ENC28J60 natively | |
13 | generates falling edge interrupts, however, additional board logic | |
14 | might invert the signal. | |
15 | - pinctrl-names: List of assigned state names, see pinctrl binding documentation. | |
16 | - pinctrl-0: List of phandles to configure the GPIO pin used as interrupt line, | |
17 | see also generic and your platform specific pinctrl binding | |
18 | documentation. | |
19 | ||
20 | Optional properties: | |
21 | - spi-max-frequency: Maximum frequency of the SPI bus when accessing the ENC28J60. | |
22 | According to the ENC28J80 datasheet, the chip allows a maximum of 20 MHz, however, | |
23 | board designs may need to limit this value. | |
2dd355a0 | 24 | |
687e3d55 PŠ |
25 | The MAC address will be determined using the optional properties |
26 | defined in ethernet.txt. | |
2dd355a0 MH |
27 | |
28 | Example (for NXP i.MX28 with pin control stuff for GPIO irq): | |
29 | ||
30 | ssp2: ssp@80014000 { | |
31 | compatible = "fsl,imx28-spi"; | |
32 | pinctrl-names = "default"; | |
33 | pinctrl-0 = <&spi2_pins_b &spi2_sck_cfg>; | |
2dd355a0 MH |
34 | |
35 | enc28j60: ethernet@0 { | |
36 | compatible = "microchip,enc28j60"; | |
37 | pinctrl-names = "default"; | |
38 | pinctrl-0 = <&enc28j60_pins>; | |
39 | reg = <0>; | |
40 | interrupt-parent = <&gpio3>; | |
41 | interrupts = <3 IRQ_TYPE_EDGE_FALLING>; | |
42 | spi-max-frequency = <12000000>; | |
43 | }; | |
44 | }; | |
45 | ||
46 | pinctrl@80018000 { | |
47 | enc28j60_pins: enc28j60_pins@0 { | |
48 | reg = <0>; | |
49 | fsl,pinmux-ids = < | |
50 | MX28_PAD_AUART0_RTS__GPIO_3_3 /* Interrupt */ | |
51 | >; | |
52 | fsl,drive-strength = <MXS_DRIVE_4mA>; | |
53 | fsl,voltage = <MXS_VOLTAGE_HIGH>; | |
54 | fsl,pull-up = <MXS_PULL_DISABLE>; | |
55 | }; | |
56 | }; |