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dt-bindings: watchdog: Add bindings for RAVE SP watchdog driver

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Add Device Tree bindings for RAVE SP watchdog drvier - an MFD cell of
parent RAVE SP driver (documented in
Documentation/devicetree/bindings/mfd/zii,rave-sp.txt).

Acked-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Andrey Smirnov 2017-12-20 22:51:18 -08:00 committed by Lee Jones
parent c3bb333457
commit a8b751eb70
1 changed files with 39 additions and 0 deletions
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Documentation/devicetree/bindings/watchdog/zii,rave-sp-wdt.txt Normal file
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Zodiac Inflight Innovations RAVE Supervisory Processor Watchdog Bindings
RAVE SP watchdog device is a "MFD cell" device corresponding to
watchdog functionality of RAVE Supervisory Processor. It is expected
that its Device Tree node is specified as a child of the node
corresponding to the parent RAVE SP device (as documented in
Documentation/devicetree/bindings/mfd/zii,rave-sp.txt)
Required properties:
- compatible: Depending on wire protocol implemented by RAVE SP
firmware, should be one of:
- "zii,rave-sp-watchdog"
- "zii,rave-sp-watchdog-legacy"
Optional properties:
- wdt-timeout: Two byte nvmem cell specified as per
Documentation/devicetree/bindings/nvmem/nvmem.txt
Example:
rave-sp {
compatible = "zii,rave-sp-rdu1";
current-speed = <38400>;
eeprom {
wdt_timeout: wdt-timeout@8E {
reg = <0x8E 2>;
};
};
watchdog {
compatible = "zii,rave-sp-watchdog";
nvmem-cells = <&wdt_timeout>;
nvmem-cell-names = "wdt-timeout";
};
}