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-STMicroelectronics STM32 Remoteproc
------------------------------------
-This document defines the binding for the remoteproc component that loads and
-boots firmwares on the ST32MP family chipset.
-
-Required properties:
-- compatible:	Must be "st,stm32mp1-m4"
-- reg:		Address ranges of the RETRAM and MCU SRAM memories used by the
-		remote processor.
-- resets:	Reference to a reset controller asserting the remote processor.
-- st,syscfg-holdboot: Reference to the system configuration which holds the
-		remote processor reset hold boot
-	1st cell: phandle of syscon block
-	2nd cell: register offset containing the hold boot setting
-	3rd cell: register bitmask for the hold boot field
-- st,syscfg-tz: Reference to the system configuration which holds the RCC trust
-		zone mode
-	1st cell: phandle to syscon block
-	2nd cell: register offset containing the RCC trust zone mode setting
-	3rd cell: register bitmask for the RCC trust zone mode bit
-
-Optional properties:
-- interrupts:	Should contain the watchdog interrupt
-- mboxes:	This property is required only if the rpmsg/virtio functionality
-		is used. List of phandle and mailbox channel specifiers:
-		- a channel (a) used to communicate through virtqueues with the
-		  remote proc.
-		  Bi-directional channel:
-		      - from local to remote = send message
-		      - from remote to local = send message ack
-		- a channel (b) working the opposite direction of channel (a)
-		- a channel (c) used by the local proc to notify the remote proc
-		  that it is about to be shut down.
-		  Unidirectional channel:
-		      - from local to remote, where ACK from the remote means
-		        that it is ready for shutdown
-- mbox-names:	This property is required if the mboxes property is used.
-		- must be "vq0" for channel (a)
-		- must be "vq1" for channel (b)
-		- must be "shutdown" for channel (c)
-- memory-region: List of phandles to the reserved memory regions associated with
-		the remoteproc device. This is variable and describes the
-		memories shared with the remote processor (eg: remoteproc
-		firmware and carveouts, rpmsg vrings, ...).
-		(see ../reserved-memory/reserved-memory.txt)
-- st,syscfg-pdds: Reference to the system configuration which holds the remote
-		processor deep sleep setting
-	1st cell: phandle to syscon block
-	2nd cell: register offset containing the deep sleep setting
-	3rd cell: register bitmask for the deep sleep bit
-- st,auto-boot:	If defined, when remoteproc is probed, it loads the default
-		firmware and starts the remote processor.
-
-Example:
-	m4_rproc: m4@10000000 {
-		compatible = "st,stm32mp1-m4";
-		reg = <0x10000000 0x40000>,
-		      <0x30000000 0x40000>,
-		      <0x38000000 0x10000>;
-		resets = <&rcc MCU_R>;
-		st,syscfg-holdboot = <&rcc 0x10C 0x1>;
-		st,syscfg-tz = <&rcc 0x000 0x1>;
-	};