lkml.org 
[lkml]   [2019]   [Aug]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/5] dt-bindings: fsl: scu: add scu power key binding
Date
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 power key event etc. management, Linux kernel
has to communicate with system controller via MU (message unit)
IPC to get power key event, add binding doc for i.MX system
controller power key driver.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
---
.../devicetree/bindings/arm/freescale/fsl,scu.txt | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
index c149fad..001d0b7 100644
--- a/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
+++ b/Documentation/devicetree/bindings/arm/freescale/fsl,scu.txt
@@ -157,6 +157,17 @@ Required properties:
Optional properties:
- timeout-sec: contains the watchdog timeout in seconds.

+Power key bindings based on SCU Message Protocol
+------------------------------------------------------------
+
+Required properties:
+- compatible: should be:
+ "fsl,imx8qxp-sc-pwrkey"
+ followed by "fsl,imx-sc-pwrkey";
+- linux,keycodes: See Documentation/devicetree/bindings/input/keys.txt
+Optional Properties:
+- wakeup-source: See Documentation/devicetree/bindings/power/wakeup-source.txt
+
Example (imx8qxp):
-------------
aliases {
@@ -220,6 +231,13 @@ firmware {
compatible = "fsl,imx8qxp-sc-rtc";
};

+ scu_pwrkey: scu-pwrkey {
+ compatible = "fsl,imx8qxp-sc-pwrkey", "fsl,imx-sc-pwrkey";
+ linux,keycode = <KEY_POWER>;
+ wakeup-source;
+ status = "disabled";
+ };
+
watchdog {
compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt";
timeout-sec = <60>;
--
2.7.4
\
 
 \ /
  Last update: 2019-08-30 10:56    [W:0.048 / U:0.256 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site