add device tree bindings document for reboot-mode driver
Signed-off-by: Andy Yan <andy....@rock-chips.com>
---
Changes in v4:
- remove mode-maskrom
- rename mode-fastboot to mode-bootloader to keep compatible with the exiting
Android device
Changes in v3:
- descirbe all reboot mode as properity instead of subnode
Changes in v2: None
Changes in v1: None
.../bindings/power/reset/reboot-mode.txt | 24 +++++++++++++++
.../bindings/power/reset/syscon-reboot-mode.txt | 35 ++++++++++++++++++++++
2 files changed, 59 insertions(+)
create mode 100644
Documentation/devicetree/bindings/power/reset/reboot-mode.txt
create mode 100644
Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt
diff --git a/Documentation/devicetree/bindings/power/reset/reboot-mode.txt
b/Documentation/devicetree/bindings/power/reset/reboot-mode.txt
new file mode 100644
index 0000000..f131a11
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/reset/reboot-mode.txt
@@ -0,0 +1,24 @@
+Generic reboot mode core map driver
+
+This driver get reboot mode arguments and call the write
+interface to stores the magic value in special register
+or ram . Then the bootloader can read it and take different
+action according the argument stored.
+
+All mode properties are vendor specific, it is a indication to tell
+the bootloder what to do when the system reboot, and should be named
+as mode-xxx = <magic> (xxx is mode name).
+
+- mode-normal: Normal reboot mode, system reboot with command "reboot".
+- mode-recovery: Android Recovery mode, it is a mode to format the device or
update a new image.
+- mode-bootloader: Android fastboot mode, it's a mode to re-flash partitions
on the Android based device.
+- mode-loader: A bootloader mode, it's a mode used to download image on
Rockchip platform,
+ usually used in development.
+
+Example:
+ reboot-mode {
+ mode-normal = <BOOT_NORMAL>;
+ mode-recovery = <BOOT_RECOVERY>;
+ mode-bootloader = <BOOT_FASTBOOT>;
+ mode-loader = <BOOT_LOADER>;
+ }
diff --git
a/Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt
b/Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt
new file mode 100644
index 0000000..1908e54
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/reset/syscon-reboot-mode.txt
@@ -0,0 +1,35 @@
+SYSCON reboot mode driver
+
+This driver get reboot mode magic value form reboot-mode driver
+and stores it in a SYSCON mapped register. Then the bootloader
+can read it and take different action according to the magic
+value stored.
+
+This DT node should be represented as a sub-node of a "syscon", "simple-mfd"
+node.
+
+Required properties:
+- compatible: should be "syscon-reboot-mode"
+- offset: offset in the register map for the storage register (in bytes)
+
+Optional properity:
+- mask: the mask bits of the mode magic value, default set to 0xffffffff if
missing.
+
+The rest of the properties should follow the generic reboot-mode discription
+found in reboot-mode.txt
+
+Example:
+ pmu: pmu@20004000 {
+ compatible = "rockchip,rk3066-pmu", "syscon", "simple-mfd";
+ reg = <0x20004000 0x100>;
+
+ reboot-mode {
+ compatible = "syscon-reboot-mode";
+ offset = <0x40>;
+ mode-normal = <BOOT_NORMAL>;
+ mode-recovery = <BOOT_RECOVERY>;
+ mode-fastboot = <BOOT_FASTBOOT>;
+ mode-loader = <BOOT_LOADER>;
+
+ };
+ };
--
1.9.1
