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-rw-r--r--Documentation/devicetree/bindings/mfd/aspeed-scu.txt28
1 files changed, 26 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/mfd/aspeed-scu.txt b/Documentation/devicetree/bindings/mfd/aspeed-scu.txt
index ce8cf0ec6279..857ee33f7329 100644
--- a/Documentation/devicetree/bindings/mfd/aspeed-scu.txt
+++ b/Documentation/devicetree/bindings/mfd/aspeed-scu.txt
@@ -4,9 +4,7 @@ configuring elements such as clocks, pinmux, and reset.
Required properties:
- compatible: One of:
"aspeed,ast2400-scu", "syscon", "simple-mfd"
- "aspeed,g4-scu", "syscon", "simple-mfd"
"aspeed,ast2500-scu", "syscon", "simple-mfd"
- "aspeed,g5-scu", "syscon", "simple-mfd"
- reg: contains the offset and length of the SCU memory region
- #clock-cells: should be set to <1> - the system controller is also a
@@ -22,3 +20,29 @@ syscon: syscon@1e6e2000 {
#clock-cells = <1>;
#reset-cells = <1>;
};
+
+Silicon ID
+-----------------
+
+Families have unique hardware silicon identifiers within the SoC.
+
+Required properties:
+
+ - compatible: "aspeed,silicon-id" or:
+ "aspeed,ast2400-silicon-id" or
+ "aspeed,ast2500-silicon-id" or
+ "aspeed,ast2600-silicon-id"
+
+ - reg: offset and length of the silicon id information
+ optionally, a second offset and length describes the unique chip id
+
+ The reg should be the unique silicon id register, and
+ not backwards compatible one in eg. the 2600.
+
+Example:
+
+
+silicon-id@7c {
+ compatible = "aspeed,ast2500-silicon-id", "aspeed,silicon-id";
+ reg = <0x7c 0x4 0x150 0x8>;
+};