mirror of https://gitee.com/openkylin/linux.git
59 lines
2.5 KiB
Plaintext
59 lines
2.5 KiB
Plaintext
* Microchip ENC28J60
|
|
|
|
This is a standalone 10 MBit ethernet controller with SPI interface.
|
|
|
|
For each device connected to a SPI bus, define a child node within
|
|
the SPI master node.
|
|
|
|
Required properties:
|
|
- compatible: Should be "microchip,enc28j60"
|
|
- reg: Specify the SPI chip select the ENC28J60 is wired to
|
|
- interrupt-parent: Specify the phandle of the source interrupt, see interrupt
|
|
binding documentation for details. Usually this is the GPIO bank
|
|
the interrupt line is wired to.
|
|
- interrupts: Specify the interrupt index within the interrupt controller (referred
|
|
to above in interrupt-parent) and interrupt type. The ENC28J60 natively
|
|
generates falling edge interrupts, however, additional board logic
|
|
might invert the signal.
|
|
- pinctrl-names: List of assigned state names, see pinctrl binding documentation.
|
|
- pinctrl-0: List of phandles to configure the GPIO pin used as interrupt line,
|
|
see also generic and your platform specific pinctrl binding
|
|
documentation.
|
|
|
|
Optional properties:
|
|
- spi-max-frequency: Maximum frequency of the SPI bus when accessing the ENC28J60.
|
|
According to the ENC28J80 datasheet, the chip allows a maximum of 20 MHz, however,
|
|
board designs may need to limit this value.
|
|
- local-mac-address: See ethernet.txt in the same directory.
|
|
|
|
|
|
Example (for NXP i.MX28 with pin control stuff for GPIO irq):
|
|
|
|
ssp2: ssp@80014000 {
|
|
compatible = "fsl,imx28-spi";
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&spi2_pins_b &spi2_sck_cfg>;
|
|
|
|
enc28j60: ethernet@0 {
|
|
compatible = "microchip,enc28j60";
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&enc28j60_pins>;
|
|
reg = <0>;
|
|
interrupt-parent = <&gpio3>;
|
|
interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
|
|
spi-max-frequency = <12000000>;
|
|
};
|
|
};
|
|
|
|
pinctrl@80018000 {
|
|
enc28j60_pins: enc28j60_pins@0 {
|
|
reg = <0>;
|
|
fsl,pinmux-ids = <
|
|
MX28_PAD_AUART0_RTS__GPIO_3_3 /* Interrupt */
|
|
>;
|
|
fsl,drive-strength = <MXS_DRIVE_4mA>;
|
|
fsl,voltage = <MXS_VOLTAGE_HIGH>;
|
|
fsl,pull-up = <MXS_PULL_DISABLE>;
|
|
};
|
|
};
|