add device tree bindings document for reboot-mode driver
Signed-off-by: Andy Yan <andy.yan@xxxxxxxxxxxxxx>
---
Changes in v1: None
.../devicetree/bindings/misc/reboot-mode.txt | 41 ++++++++++++++++++++++
1 file changed, 41 insertions(+)
create mode 100644 Documentation/devicetree/bindings/misc/reboot-mode.txt
diff --git a/Documentation/devicetree/bindings/misc/reboot-mode.txt b/Documentation/devicetree/bindings/misc/reboot-mode.txt
new file mode 100644
index 0000000..082bc0c
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/reboot-mode.txt
@@ -0,0 +1,41 @@
+Generic reboot mode communication driver
+
+This driver get reboot mode arguments from userspace
+and stores it in special register or ram . Then the
+bootloader will read it and take different action
+according the argument stored.
+
+Required properties:
+ - compatible = "reboot-mode" or other vendor compatible string;
+
+Each mode is represented as a sub-node of reboot_mode:
+
+Subnode required properties:
+ - linux,mode: reboot mode command,such as "loader","recovery", "fastboot".
+ - linux,magic: magic number for the mode, this is vendor specific.
+
+example:
+ reboot_mode {
+ compatible = "rockchip,reboot-mode";
+ rockchip,regmap = <&pmu>;
+ offset = <0x40>;
+ loader {
+ linux,mode = "loader";
+ linux,magic = <0x5242C301>;
+ };
+
+ maskrom {
+ linux,mode = "maskrom";
+ linux,magic = <0x5242C302>;
+ };
+
+ recovery {
+ linux,mode = "recovery";
+ linux,magic = <0x5242C303>;
+ };
+
+ fastboot {
+ linux,mode = "fastboot";
+ linux,magic = <0x5242C309>;
+ };
+ };
--
1.9.1
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