This is the documentation for the latest (main) development branch of
Zephyr. If you are looking for the documentation of previous releases, use
the drop-down menu on the left and select the desired version.
Clock frequency the SPI peripheral is being driven at, in Hz.
An array of chip select GPIOs to use. Each element
in the array specifies a GPIO. The index in the array
corresponds to the child node that the CS gpio controls.
cs-gpios = <&gpio0 23 GPIO_ACTIVE_LOW>,
<&gpio1 10 GPIO_ACTIVE_LOW>,
reg = <0>;
reg = <1>;
The child node "spi-device@0" specifies a SPI device with
chip select controller gpio0, pin 23, and devicetree
GPIO flags GPIO_ACTIVE_LOW. Similarly, "spi-device@1" has CS GPIO
controller gpio1, pin 10, and flags GPIO_ACTIVE_LOW. Additional
devices can be configured in the same way.
If unsure about the flags cell, GPIO_ACTIVE_LOW is generally a safe
choice for a typical "CSn" pin. GPIO_ACTIVE_HIGH may be used if
intervening hardware inverts the signal to the peripheral device or
the line itself is active high.
If this property is not defined, no chip select GPIOs are set.
SPI controllers with dedicated CS pins do not need to define
the cs-gpios property.
Pin configuration/s for the second state. See pinctrl-0.
Pin configuration/s for the third state. See pinctrl-0.
Pin configuration/s for the fourth state. See pinctrl-0.
Pin configuration/s for the fifth state. See pinctrl-0.
Names for the provided states. The number of names needs to match the
number of states.
Deprecated properties not inherited from the base binding file.
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 “telink,b91-spi” compatible.
Provided names of mailbox / IPM channel specifiers
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.
Power domain the device belongs to.
The device will be notified when the power domain it belongs to is either
suspended or resumed.
Automatically configure the device for runtime power management after the
init function runs.