Document: devicetree: input: imx: i.mx snvs power device tree bindings

The snvs-pwrkey is designed to enable POWER key function which controlled
by SNVS ONOFF. the driver can report the status of POWER key and wakeup
system if pressed after system suspend.

Signed-off-by: Frank Li <Frank.Li@freescale.com>
Signed-off-by: Robin Gong <b38343@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

diff --git a/Documentation/devicetree/bindings/crypto/fsl-sec4.txt b/Documentation/devicetree/bindings/crypto/fsl-sec4.txt
index b21e7c2eef21e1e56641b9c093f12e3ee3cc7629..71a39c5bd486dfdf3c5e30e0f79081e449ef4c5f 100644 (file)
--- a/Documentation/devicetree/bindings/crypto/fsl-sec4.txt
+++ b/Documentation/devicetree/bindings/crypto/fsl-sec4.txt
@@ -386,6 +386,47 @@ EXAMPLE
                offset = <0x34>;
        };
 
+=====================================================================
+System ON/OFF key driver
+
+  The snvs-pwrkey is designed to enable POWER key function which controlled
+  by SNVS ONOFF, the driver can report the status of POWER key and wakeup
+  system if pressed after system suspend.
+
+  - compatible:
+      Usage: required
+      Value type: <string>
+      Definition: Mush include "fsl,sec-v4.0-pwrkey".
+
+  - interrupts:
+      Usage: required
+      Value type: <prop_encoded-array>
+      Definition: The SNVS ON/OFF interrupt number to the CPU(s).
+
+  - linux,keycode:
+      Usage: option
+      Value type: <int>
+      Definition: Keycode to emit, KEY_POWER by default.
+
+  - wakeup:
+      Usage: option
+      Value type: <boo>
+      Definition: Button can wake-up the system.
+
+ - regmap:
+      Usage: required:
+      Value type: <phandle>
+      Definition: this is phandle to the register map node.
+
+EXAMPLE:
+       snvs-pwrkey@0x020cc000 {
+               compatible = "fsl,sec-v4.0-pwrkey";
+               regmap = <&snvs>;
+               interrupts = <0 4 0x4>
+               linux,keycode = <116>; /* KEY_POWER */
+               wakeup;
+       };
+
 =====================================================================
 FULL EXAMPLE
 
@@ -466,6 +507,14 @@ FULL EXAMPLE
                        offset = <0x34>;
                        interrupts = <93 2>;
                };
+
+               snvs-pwrkey@0x020cc000 {
+                       compatible = "fsl,sec-v4.0-pwrkey";
+                       regmap = <&sec_mon>;
+                       interrupts = <0 4 0x4>;
+                       linux,keycode = <116>; /* KEY_POWER */
+                       wakeup;
+               };
        };
 
 =====================================================================

diff --git a/Documentation/devicetree/bindings/input/snvs-pwrkey.txt b/Documentation/devicetree/bindings/input/snvs-pwrkey.txt
new file mode 100644 (file)
index 0000000..70c1425
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/snvs-pwrkey.txt
@@ -0,0 +1 @@
+See Documentation/devicetree/bindings/crypto/fsl-sec4.txt