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Commit ce994077 authored by Andrey Smirnov's avatar Andrey Smirnov Committed by Lee Jones
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dt-bindings: mfd: Add bindings for ZII RAVE devices 



Add Device Tree bindings for RAVE Supervisory Processor, an MCU
implementing varoius bits of housekeeping functionality (watchdoging,
backlight control, LED control, etc) on RAVE family of products by
Zodiac Inflight Innovations.

Acked-by: default avatarRob Herring <robh+dt@kernel.org>
Signed-off-by: default avatarAndrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent 993dc737

Documentation/devicetree/bindings/mfd/zii,rave-sp.txt

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Zodiac Inflight Innovations RAVE Supervisory Processor



RAVE Supervisory Processor communicates with SoC over UART. It is

expected that its Device Tree node is specified as a child of a node

corresponding to UART controller used for communication.



Required parent device properties:



 - compatible: Should be one of:

	- "zii,rave-sp-niu"

	- "zii,rave-sp-mezz"

	- "zii,rave-sp-esb"

	- "zii,rave-sp-rdu1"

	- "zii,rave-sp-rdu2"



 - current-speed: Should be set to baud rate SP device is using



RAVE SP consists of the following sub-devices:



Device				 Description

------				 -----------

rave-sp-wdt			: Watchdog

rave-sp-nvmem			: Interface to onborad EEPROM

rave-sp-backlight		: Display backlight

rave-sp-hwmon			: Interface to onboard hardware sensors

rave-sp-leds			: Interface to onboard LEDs

rave-sp-input			: Interface to onboard power button



Example of usage:



	rdu {

		compatible = "zii,rave-sp-rdu2";

		current-speed = <1000000>;



		watchdog {

			compatible = "zii,rave-sp-watchdog";

		};

	};