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dt-bindings: aspeed: Add silicon id node to SCU

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Different ASPEED families have various unique hardware silicon
identifiers within the SoC.

Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Link: https://lore.kernel.org/r/20200921091644.133107-2-joel@jms.id.au
Signed-off-by: Joel Stanley <joel@jms.id.au>
This commit is contained in:
Joel Stanley 2020-09-21 18:46:42 +09:30
parent 592693a1f8
commit 7c1f628154
1 changed files with 26 additions and 0 deletions
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26
Documentation/devicetree/bindings/mfd/aspeed-scu.txt
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@ -20,3 +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>;
};