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authorHan Nandor <nandor.han@vaisala.com>2019-05-15 10:47:15 +0000
committerSebastian Reichel <sre@kernel.org>2019-06-25 23:49:57 +0200
commitcba155e50a117465b64e197e197aedc18770c4cd (patch)
tree27e6f7ba0bb5da43d6fe54e6d8bb0f2c36b9529d /Documentation/devicetree/bindings/power
parentfce5430f6a86911ba3b4c8343ab04a88d7ad7795 (diff)
dt-bindings: power: reset: add document for NVMEM based reboot-mode
Add the device tree bindings document for the NVMEM based reboot-mode driver. Signed-off-by: Nandor Han <nandor.han@vaisala.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'Documentation/devicetree/bindings/power')
-rw-r--r--Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.txt26
1 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.txt b/Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.txt
new file mode 100644
index 000000000000..752d6126d5da
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.txt
@@ -0,0 +1,26 @@
+NVMEM reboot mode driver
+
+This driver gets reboot mode magic value from reboot-mode driver
+and stores it in a NVMEM cell named "reboot-mode". Then the bootloader
+can read it and take different action according to the magic
+value stored.
+
+Required properties:
+- compatible: should be "nvmem-reboot-mode".
+- nvmem-cells: A phandle to the reboot mode provided by a nvmem device.
+- nvmem-cell-names: Should be "reboot-mode".
+
+The rest of the properties should follow the generic reboot-mode description
+found in reboot-mode.txt
+
+Example:
+ reboot-mode {
+ compatible = "nvmem-reboot-mode";
+ nvmem-cells = <&reboot_mode>;
+ nvmem-cell-names = "reboot-mode";
+
+ mode-normal = <0xAAAA5501>;
+ mode-bootloader = <0xBBBB5500>;
+ mode-recovery = <0xCCCC5502>;
+ mode-test = <0xDDDD5503>;
+ };