[PATCH V4 1/5] dt-bindings: fsl: scu: add scu key binding
From: Anson Huang <hidden>
Date: 2019-09-16 02:54:31
Also in:
linux-devicetree, linux-input, lkml
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
NXP i.MX8QXP is an ARMv8 SoC with a Cortex-M4 core inside as system controller, the system controller is in charge of system power, clock and scu key event etc. management, Linux kernel has to communicate with system controller via MU (message unit) IPC to get scu key event, add binding doc for i.MX system controller key driver. Signed-off-by: Anson Huang <redacted> --- No changes. --- .../devicetree/bindings/arm/freescale/fsl,scu.txt | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
index c149fad..5eab7d0 100644
--- a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
+++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt@@ -157,6 +157,15 @@ Required properties: Optional properties: - timeout-sec: contains the watchdog timeout in seconds. +SCU key bindings based on SCU Message Protocol +------------------------------------------------------------ + +Required properties: +- compatible: should be: + "fsl,imx8qxp-sc-key" + followed by "fsl,imx-sc-key"; +- linux,keycodes: See Documentation/devicetree/bindings/input/keys.txt + Example (imx8qxp): ------------- aliases {
@@ -220,6 +229,11 @@ firmware { compatible = "fsl,imx8qxp-sc-rtc"; }; + scu_key: scu-key { + compatible = "fsl,imx8qxp-sc-key", "fsl,imx-sc-key"; + linux,keycode = <KEY_POWER>; + }; + watchdog { compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt"; timeout-sec = <60>;
--
2.7.4
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