xlnx,zynqmp-ipi-mailbox

Note

An implementation of a driver matching this compatible is available in drivers/ipm/ipm_xlnx_ipi.c.

Description

The Xilinx IPI(Inter Processor Interrupt) mailbox controller is to manage
messaging between two Xilinx Zynq UltraScale+ MPSoC IPI agents. Each IPI
agent owns registers used for notification and buffers for message.

Properties

Top level properties

These property descriptions apply to “xlnx,zynqmp-ipi-mailbox” nodes themselves. This page also describes child node properties in the following sections.

Properties not inherited from the base binding file.

Name	Type	Details
`local-ipi-id`	`int`	Host Xilinx IPI agent ID of which the mailbox is connected to. This property is required.

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 “xlnx,zynqmp-ipi-mailbox” compatible.

Name	Type	Details
`reg`	`array`	IPI control and status register space See Important properties for more information.
`reg-names`	`string-array`	host_ipi_reg
`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.
`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
`label`	`string`	No description provided for this label See Important properties for more information.
`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
`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.

Child node properties

Name

Type

Details

reg

array

register space for IPI message buffers

This property is required.

See Important properties for more information.

reg-names

string-array

name of each register space

This property is required.

remote-ipi-id

int

Remote Xilinx IPI agent ID of which the mailbox is connected to.

This property is required.