From 688f1dfb69b4efd111121d0b185c7eec1b184a00 Mon Sep 17 00:00:00 2001 From: Anson Huang Date: Tue, 15 Oct 2019 17:27:21 -0700 Subject: Input: keyboard - imx_sc: Add i.MX system controller key support i.MX8QXP is an ARMv8 SoC which has a Cortex-M4 system controller inside, the system controller is in charge of controlling power, clock and scu key etc.. Adds i.MX system controller key driver support, Linux kernel has to communicate with system controller via MU (message unit) IPC to get scu key's status. Signed-off-by: Anson Huang Reviewed-by: Rob Herring Link: https://lore.kernel.org/r/1570412509-7893-2-git-send-email-Anson.Huang@nxp.com Signed-off-by: Dmitry Torokhov --- .../devicetree/bindings/arm/freescale/fsl,scu.txt | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'Documentation/devicetree/bindings/arm') diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt index a575e42f7fec..e57eaff07738 100644 --- a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt +++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt @@ -155,6 +155,15 @@ 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 { @@ -218,6 +227,11 @@ firmware { compatible = "fsl,imx8qxp-sc-rtc"; }; + scu_key: scu-key { + compatible = "fsl,imx8qxp-sc-key", "fsl,imx-sc-key"; + linux,keycodes = ; + }; + watchdog { compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt"; timeout-sec = <60>; -- cgit v1.2.3