atmel,sam0-uart

Vendor: Atmel Corporation

Note

An implementation of a driver matching this compatible is available in drivers/serial/uart_sam0.c.

Description

These nodes are “uart” bus nodes.

Atmel SAM0 SERCOM UART driver

Properties

Node specific properties

Properties not inherited from the base binding file.

Name

Type

Details

rxpo

int

 
Receive Data Pinout. An enumeration with the following values:

+-------+---------------+
| Value | RX Pin        |
+-------+---------------+
|     0 | SERCOM_PAD[0] |
+-------+---------------+
|     1 | SERCOM_PAD[1] |
+-------+---------------+
|     2 | SERCOM_PAD[2] |
+-------+---------------+
|     3 | SERCOM_PAD[3] |
+-------+---------------+

This property is required.

txpo

int

 
Transmit Data Pinout. An enumeration with values that depend on the
hardware being used. This controls both the transmit pins and if
hardware flow control is used.

SAMD20:

+-------+---------------+
| Value | TX Pin        |
+-------+---------------+
|     0 | SERCOM_PAD[0] |
+-------+---------------+
|     1 | SERCOM_PAD[2] |
+-------+---------------+

SAMD21/DA21/R21:

+-------+---------------+---------------+---------------+
| Value | TX Pin        | RTS           | CTS           |
+-------+---------------+---------------+---------------+
|     0 | SERCOM_PAD[0] |           N/A |           N/A |
+-------+---------------+---------------+---------------+
|     1 | SERCOM_PAD[2] |           N/A |           N/A |
+-------+---------------+---------------+---------------+
|     2 | SERCOM_PAD[0] | SERCOM_PAD[2] | SERCOM_PAD[3] |
+-------+---------------+---------------+---------------+
|     3 | Reserved                                      |
+-------+-----------------------------------------------+

SAML2x/C2x:

+-------+----------------+---------------+--------------+
| Value | TX Pin        | RTS           | CTS           |
+-------+---------------+---------------+---------------+
|     0 | SERCOM_PAD[0] |           N/A |           N/A |
+-------+---------------+---------------+---------------+
|     1 | SERCOM_PAD[2] |           N/A |           N/A |
+-------+---------------+---------------+---------------+
|     2 | SERCOM_PAD[0] | SERCOM_PAD[2] | SERCOM_PAD[3] |
+-------+---------------+---------------+---------------+
|     3 | SERCOM_PAD[0] | SERCOM_PAD[2] |           N/A |
+-------+---------------+---------------+---------------+

SAMD5/E5:

+-------+---------------+---------------+---------------+
| Value | TX Pin        | RTS           | CTS           |
+-------+---------------+---------------+---------------+
|     0 | SERCOM_PAD[0] |           N/A |           N/A |
+-------+---------------+---------------+---------------+
|     1 | Reserved                                      |
+-------+---------------+---------------+---------------+
|     2 | SERCOM_PAD[0] | SERCOM_PAD[2] | SERCOM_PAD[3] |
+-------+---------------+---------------+---------------+
|     3 | SERCOM_PAD[0] | SERCOM_PAD[2] |           N/A |
+-------+---------------+---------------+---------------+

This property is required.

collision-detection

boolean

 
Enable collision detection for half-duplex mode.

clock-frequency

int

 
Clock frequency information for UART operation

current-speed

int

 
Initial baud rate setting for UART

hw-flow-control

boolean

 
Set to enable RTS/CTS flow control at boot time

parity

string

 
Configures the parity of the adapter. Enumeration id 0 for none, 1 for odd
and 2 for even parity. Default to none if not specified.

Legal values: 'none', 'odd', 'even'

stop-bits

string

 
Sets the number of stop bits.

Legal values: '0_5', '1', '1_5', '2'

data-bits

int

 
Sets the number of data bits.

Legal values: 5, 6, 7, 8, 9

pinctrl-0

phandles

 
Pin configuration/s for the first state. Content is specific to the
selected pin controller driver implementation.

pinctrl-1

phandles

 
Pin configuration/s for the second state. See pinctrl-0.

pinctrl-2

phandles

 
Pin configuration/s for the third state. See pinctrl-0.

pinctrl-3

phandles

 
Pin configuration/s for the fourth state. See pinctrl-0.

pinctrl-4

phandles

 
Pin configuration/s for the fifth state. See pinctrl-0.

pinctrl-names

string-array

 
Names for the provided states. The number of names needs to match the
number of states.

Deprecated node specific properties

Deprecated properties not inherited from the base binding file.

(None)

Base properties

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,sam0-uart” compatible.

Name

Type

Details

reg

array

 
register space

This property is required.

See Important properties for more information.

interrupts

array

 
interrupts for device

This property is required.

See Important properties for more information.

clocks

phandle-array

 
Clock gate information

This property is required.

clock-names

string-array

 
name of each clock

This property is required.

dmas

phandle-array

 
Optional TX & RX dma specifiers.  Each specifier will have a phandle
reference to the dmac controller, the channel number, and peripheral
trigger source.

For example dmas for TX, RX on SERCOM3
   dmas = <&dmac 0 0xb>, <&dmac 0 0xa>;

dma-names

string-array

 
Required if the dmas property exists.  This should be "tx" and "rx"
to match the dmas property.

For example
   dma-names = "tx", "rx";

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-extended

compound

 
extended interrupt specifier for device

interrupt-names

string-array

 
name of each interrupt

interrupt-parent

phandle

 
phandle to interrupt controller node

label

string

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

See Important properties for more information.

This property is deprecated.

#address-cells

int

 
number of address cells in reg property

#size-cells

int

 
number of size cells in reg property

io-channels

phandle-array

 
IO channels specifiers

io-channel-names

string-array

 
Provided names of IO channel specifiers

mboxes

phandle-array

 
mailbox / IPM channels specifiers

mbox-names

string-array

 
Provided names of mailbox / IPM channel specifiers

power-domains

phandle-array

 
Power domain specifiers

power-domain-names

string-array

 
Provided names of power domain specifiers

#power-domain-cells

int

 
Number of cells in power-domains property

zephyr,deferred-init

boolean

 
Do not initialize device automatically on boot. Device should be manually
initialized using device_init().

wakeup-source

boolean

 
Property to identify that a device can be used as wake up source.

When this property is provided a specific flag is set into the
device that tells the system that the device is capable of
wake up the system.

Wake up capable devices are disabled (interruptions will not wake up
the system) by default but they can be enabled at runtime if necessary.

zephyr,pm-device-runtime-auto

boolean

 
Automatically configure the device for runtime power management after the
init function runs.

zephyr,disabling-power-states

phandles

 
List of power states that will disable this device power.