atmel,sam-gmac

Vendor: Atmel Corporation

Description

Atmel SAM-family GMAC Ethernet

Properties

Node specific properties

Base properties

Properties not inherited from the base binding file.

Name

Type

Details

num-queues

int

 
Number of hardware TX and RX queues

This property is required.

max-frame-size

int

 
Maximum transfer unit (IEEE defined MTU), rather than the maximum frame size (there\'s contradiction in the Devicetree Specification). The current supported values are 1518, 1536 and 10240 (jumbo frames).

Default value: 1518

max-speed

int

 
Specifies maximum speed in Mbit/s supported by the device.

Default value: 100

phy-connection-type

string

 
Operation mode of the PHY interface

Default value: rmii

Legal values: 'rmii', 'mii'

pinctrl-0

phandles

 
PIO pin configuration for the various GMAC signals that include
GTXCK, GTXEN, GTX[3..0], GTXER, GRXCK, GRXDV, GRX[3..0], GRXER,
GCRS, GCOL, GMDC, and GMDIO.  Which signals are used vary based
on if the PHY connection is MII or RMII (see datasheet for more
details).  We expect that the phandles will reference pinctrl nodes.
These nodes will have a nodelabel that matches the Atmel SoC HAL
defines and be of the form p<port><pin><periph>_<inst>_<signal>.

For example the GMAC on SAME7x would be for RMII
   pinctrl-0 = <&pd0a_gmac_gtxck &pd1a_gmac_gtxen
                &pd2a_gmac_gtx0 &pd3a_gmac_gtx1
                &pd4a_gmac_grxdv &pd5a_gmac_grx0
                &pd6a_gmac_grx1 &pd7a_gmac_grxer
                &pd8a_gmac_gmdc &pd9a_gmac_gmdio>;

local-mac-address

uint8-array

 
Specifies the MAC address that was assigned to the network device

zephyr,random-mac-address

boolean

 
Use a random MAC address generated when the driver is initialized.
Note that using this choice and rebooting a board may leave stale
MAC address in peers' ARP caches and lead to issues and delays in
communication.  (Use "ip neigh flush all" on Linux peers to clear
ARP cache.)

It is driver specific how the OUI octets are handled.

If set we ignore any setting of the local-mac-address property.

Properties inherited from the base binding file, which defines common properties that may be set on many nodes. Not all of these may apply to the “atmel,sam-gmac” compatible.

Name

Type

Details

reg

array

 
register space

This property is required.

See Important properties for more information.

label

string

 
Human readable string describing the device (used as device_get_binding() argument)

This property is required.

See Important properties for more information.

status

string

 
indicates the operational status of a device

Legal values: 'ok', 'okay', 'disabled', 'reserved', 'fail', 'fail-sss'

See Important properties for more information.

compatible

string-array

 
compatible strings

This property is required.

See Important properties for more information.

reg-names

string-array

 
name of each register space

interrupts

array

 
interrupts for device

See Important properties for more information.

interrupts-extended

compound

 
extended interrupt specifier for device

interrupt-names

string-array

 
name of each interrupt

interrupt-parent

phandle

 
phandle to interrupt controller node

clocks

phandle-array

 
Clock gate information

clock-names

string-array

 
name of each clock

#address-cells

int

 
number of address cells in reg property

#size-cells

int

 
number of size cells in reg property

dmas

phandle-array

 
DMA channels specifiers

dma-names

string-array

 
Provided names of DMA channel specifiers

io-channels

phandle-array

 
IO channels specifiers

io-channel-names

string-array

 
Provided names of IO channel specifiers