Messages in this thread Patch in this message | | | From | Anson Huang <> | Subject | [PATCH V8 1/4] dt-bindings: watchdog: add i.MX system controller watchdog | Date | Fri, 15 Mar 2019 06:17:16 +0000 |
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Add i.MX system controller watchdog binding doc.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com> --- New patch, as watchdog node is moved out of SCU, so we need to add binding doc for it. --- .../devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt
diff --git a/Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt b/Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt new file mode 100644 index 0000000..e461c85 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt @@ -0,0 +1,20 @@ +* 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"; + +Examples: + +watchdog { + compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt"; +}; -- 2.7.4
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