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-rw-r--r--Documentation/devicetree/bindings/arm/arm,scpi.txt5
1 files changed, 4 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/arm/arm,scpi.txt b/Documentation/devicetree/bindings/arm/arm,scpi.txt
index d1882c4540d0..401831973638 100644
--- a/Documentation/devicetree/bindings/arm/arm,scpi.txt
+++ b/Documentation/devicetree/bindings/arm/arm,scpi.txt
@@ -7,7 +7,10 @@ by Linux to initiate various system control and power operations.
Required properties:
-- compatible : should be "arm,scpi"
+- compatible : should be
+ * "arm,scpi" : For implementations complying to SCPI v1.0 or above
+ * "arm,scpi-pre-1.0" : For implementations complying to all
+ unversioned releases prior to SCPI v1.0
- mboxes: List of phandle and mailbox channel specifiers
All the channels reserved by remote SCP firmware for use by
SCPI message protocol should be specified in any order