From a8b751eb709ecefe0a81a0112d9c01b2181a3efa Mon Sep 17 00:00:00 2001 From: Andrey Smirnov Date: Wed, 20 Dec 2017 22:51:18 -0800 Subject: dt-bindings: watchdog: Add bindings for RAVE SP watchdog driver 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 Acked-by: Pavel Machek Acked-by: Rob Herring Reviewed-by: Guenter Roeck Signed-off-by: Nikita Yushchenko Signed-off-by: Andrey Smirnov Signed-off-by: Lee Jones --- .../bindings/watchdog/zii,rave-sp-wdt.txt | 39 ++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/zii,rave-sp-wdt.txt (limited to 'Documentation/devicetree/bindings/watchdog') diff --git a/Documentation/devicetree/bindings/watchdog/zii,rave-sp-wdt.txt b/Documentation/devicetree/bindings/watchdog/zii,rave-sp-wdt.txt new file mode 100644 index 000000000000..3de96186e92e --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/zii,rave-sp-wdt.txt @@ -0,0 +1,39 @@ +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"; + }; + } + -- cgit v1.2.3-59-g8ed1b