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dt-bindings: watchdog: move i.MX system controller watchdog binding to SCU 

i.MX system controller watchdog depends on SCU driver to support
interrupt function, so it needs to be subnode of SCU node in DT,
binding doc should be moved to fsl,scu.txt as well.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This commit is contained in:
Anson Huang 2019-05-27 15:03:15 +08:00 committed by Wim Van Sebroeck
parent 15f7d7fc55
commit 8c21ead3ea
2 changed files with 15 additions and 24 deletions
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15
Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
View File

@ -133,6 +133,16 @@ RTC bindings based on SCU Message Protocol
Required properties:
- compatible: should be "fsl,imx8qxp-sc-rtc";
Watchdog bindings based on SCU Message Protocol
------------------------------------------------------------
Required properties:
- compatible: should be:
"fsl,imx8qxp-sc-wdt"
followed by "fsl,imx-sc-wdt";
Optional properties:
- timeout-sec: contains the watchdog timeout in seconds.
Example (imx8qxp):
-------------
aliases {
@ -185,6 +195,11 @@ firmware {
rtc: rtc {
compatible = "fsl,imx8qxp-sc-rtc";
};
watchdog {
compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt";
timeout-sec = <60>;
};
};
};

24
Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt
View File

@ -1,24 +0,0 @@
* Freescale i.MX System Controller Watchdog
i.MX system controller watchdog is for i.MX SoCs with system controller inside,
the watchdog is managed by system controller, users can ONLY communicate with
system controller from secure mode for watchdog operations, so Linux i.MX system
controller watchdog driver will call ARM SMC API and trap into ARM-Trusted-Firmware
for watchdog operations, ARM-Trusted-Firmware is running at secure EL3 mode and
it will request system controller to execute the watchdog operation passed from
Linux kernel.
Required properties:
- compatible: Should be :
"fsl,imx8qxp-sc-wdt"
followed by "fsl,imx-sc-wdt";
Optional properties:
- timeout-sec : Contains the watchdog timeout in seconds.
Examples:
watchdog {
compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt";
timeout-sec = <60>;
};