atmel,rf2xx (on spi bus)
Vendor: Atmel Corporation
Note
An implementation of a driver matching this compatible is available in drivers/ieee802154/ieee802154_rf2xx.c.
Description
ATMEL AT86RF2xx 802.15.4 wireless transceiver
Properties
Node specific properties
Properties not inherited from the base binding file.
Name |
Type |
Details |
|---|---|---|
|
|
This property is required. |
|
|
This property is required. |
|
|
Multi-functional pin that controls sleep, deep sleep, transmit
start and receive states
This property is required. |
|
|
RX and TX Frame Time Stamping(TX_ARET)
|
|
|
Master clock signal output
|
|
|
Specifies the MAC address that was assigned to the network
device
|
|
|
Selects Channel Page accordingly with IEEE 802.15.4 standard. The Page 0
is used in both Sub-Giga and 2.4GHz. It allows select channels 0-10 in
Sub-Giga band (0: BPSK-20, 1-10: BPSK-40) and 11-26 in 2.4GHz band
(11-26: O-QPSK-250). Channel 2 is for Sub-Giga and selects
(0: OQPSK-SIN-RC-100, 1-10: OQPSK-SIN-250). Channel 5 is for Sub-Giga
(JAPAN) and selects (0-3: OQPSK-RC-250) .
0: Page 0 - BPSK-20 [0], BPSK-40 [1-10], O-QPSK-250 [11-26].
2: Page 2 - OQPSK-SIN-RC-100 [0], OQPSK-SIN-250 [1-10].
5: Page 5 - OQPSK-RC-250 [0-3].
Legal values: |
|
|
This is the Transmission Power Mapping Table array used to comply with
local regulations. By default this value set an output power above 0dBm
for all transceivers. This property must be used with tx-pwr-min and
tx-pwr-max for normal operations. The number of elements is defined by
the size of the tx-pwr-table array property. The max entry value for
2.4GHz is 0x0f and 0xff for Sub-Giga. See PHY_TX_PWR at datasheet for
more details.
The output power is determined by following formula:
linear_step = (tx-pwr-max - tx-pwr-min)
/ (sizeof(tx-pwr-table) - 1.0);
table_index = abs((value_in_dbm - tx-pwr-max) / linear_step);
output_power = tx-pwr-table[table_index];
Using AT86RF233 as example without external PA. By the datasheet the
tx-pwr-min = -17 dBm and tx-pwr-max = +4 dBm. Using 48 elements in the
tx-pwr-table array. The table array is filled from higher to lower power.
tx-pwr-min = [01 11]; /* -17.0 dBm */
tx-pwr-max = [00 04]; /* 4.0 dBm */
tx-pwr-table = [00 01 03 04 05 05 06 06
07 07 07 08 08 09 09 0a
0a 0a 0b 0b 0b 0b 0c 0c
0c 0c 0d 0d 0d 0d 0d 0d
0d 0d 0e 0e 0e 0e 0e 0e
0e 0e 0e 0e 0e 0e 0f 0f];
The values in the table are filled based on table 9-9 [TX Output Power]
using the linear step in dBm as:
linear_step = (4 - (-17)) / (48 - 1) => ~0.45 dBm
Assuming that user wants set 0 dBm as output power:
table_index = abs((0 - 4) / 0.45) => 8.95 ( round to 9 )
output_power = tx-pwr-table[9] => 0x07 ( 0 dBm as table 9-9 )
Note when tx-pwr-min is [0x00, 0x00] and tx-pwr-max is [0x00, 0x00]
the linear step is zero. This means that table_index will be always the
first element of the tx-pwr-table array, which is 0x00 by default. This
is defined as general case when user not define any tx-pwr-* entries. It
sets the transceiver to use always a value above 0 dBm as output power.
Default value: |
|
|
This value represent minimum normalized value in dBm for the transceiver
output power. This property must be used when tx-pwr-table is defined.
The value is represented by two entries where first element represents
the signal indication [0x00-positive, 0x01-negative] and second element
is the minimal value in dBm for the transceiver output power. By default,
the combination of tx-pwr-min as [0x00, 0x00] and tx-pwr-max as [0x00,
0x00] will create a fixed transmission power.
Default value: |
|
|
This value represent maximum normalized value in dBm for the transceiver
output power. This property must be used when tx-pwr-table is defined.
The value is represented by two entries where first element represents
the signal indication [ 0x00-positive] and second element is the maximum
value in dBm for the transceiver output power. By default, the
combination of tx-pwr-max as [0x00, 0x00] and tx-pwr-min as [0x00,
0x00] will create a fixed transmission power.
Default value: |
|
|
Maximum clock frequency of device's SPI interface in Hz
This property is required. |
|
|
Duplex mode, full or half. By default it's always full duplex thus 0
as this is, by far, the most common mode.
Use the macros not the actual enum value, here is the concordance
list (see dt-bindings/spi/spi.h)
0 SPI_FULL_DUPLEX
2048 SPI_HALF_DUPLEX
Legal values: |
|
|
Motorola or TI frame format. By default it's always Motorola's,
thus 0 as this is, by far, the most common format.
Use the macros not the actual enum value, here is the concordance
list (see dt-bindings/spi/spi.h)
0 SPI_FRAME_FORMAT_MOTOROLA
32768 SPI_FRAME_FORMAT_TI
Legal values: |
|
|
SPI clock polarity which indicates the clock idle state.
If it is used, the clock idle state is logic high; otherwise, low.
|
|
|
SPI clock phase that indicates on which edge data is sampled.
If it is used, data is sampled on the second edge; otherwise, on the first edge.
|
|
|
In some cases, it is necessary for the master to manage SPI chip select
under software control, so that multiple spi transactions can be performed
without releasing it. A typical use case is variable length SPI packets
where the first spi transaction reads the length and the second spi transaction
reads length bytes.
|
|
|
GPIO specifier that controls power to the device.
This property should be provided when the device has a dedicated
switch that controls power to the device. The supply state is
entirely the responsibility of the device driver.
Contrast with vin-supply.
|
|
|
Reference to the regulator that controls power to the device.
The referenced devicetree node must have a regulator compatible.
This property should be provided when device power is supplied
by a shared regulator. The supply state is dependent on the
request status of all devices fed by the regulator.
Contrast with supply-gpios. If both properties are provided
then the regulator must be requested before the supply GPIOS is
set to an active state, and the supply GPIOS must be set to an
inactive state before releasing the regulator.
|
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,rf2xx” compatible.
Name |
Type |
Details |
|---|---|---|
|
|
register space
This property is required. See Important properties for more information. |
|
|
indicates the operational status of a device
Legal values: See Important properties for more information. |
|
|
compatible strings
This property is required. See Important properties for more information. |
|
|
name of each register space
|
|
|
interrupts for device
See Important properties for more information. |
|
|
extended interrupt specifier for device
|
|
|
name of each interrupt
|
|
|
phandle to interrupt controller node
|
|
|
Human readable string describing the device (used as device_get_binding() argument)
See Important properties for more information. This property is deprecated. |
|
|
Clock gate information
|
|
|
name of each clock
|
|
|
number of address cells in reg property
|
|
|
number of size cells in reg property
|
|
|
DMA channels specifiers
|
|
|
Provided names of DMA channel specifiers
|
|
|
IO channels specifiers
|
|
|
Provided names of IO channel specifiers
|
|
|
mailbox / IPM channels specifiers
|
|
|
Provided names of mailbox / IPM channel specifiers
|
|
|
Power domain specifiers
|
|
|
Provided names of power domain specifiers
|
|
|
Number of cells in power-domains property
|
|
|
Do not initialize device automatically on boot. Device should be manually
initialized using device_init().
|
|
|
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.
|
|
|
Automatically configure the device for runtime power management after the
init function runs.
|
|
|
List of power states that will disable this device power.
|