diff mbox series

[v3,1/3] dt-bindings: aspeed: Add silicon id node to SCU

Message ID 20200921091644.133107-2-joel@jms.id.au (mailing list archive)
State New, archived
Headers show
Series ARM: aspeed: Add socinfo driver | expand

Commit Message

Joel Stanley Sept. 21, 2020, 9:16 a.m. UTC 
Different ASPEED families have various unique hardware silicon
identifiers within the SoC.

Signed-off-by: Joel Stanley <joel@jms.id.au>
---
v2:
 - Fix 2500 string
 - Be explicit about which ast2600 register to use
---
 .../devicetree/bindings/mfd/aspeed-scu.txt    | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

Comments

Andrew Jeffery Sept. 24, 2020, 6:46 a.m. UTC | #1 
On Mon, 21 Sep 2020, at 18:46, Joel Stanley wrote:
> Different ASPEED families have various unique hardware silicon
> identifiers within the SoC.
> 
> Signed-off-by: Joel Stanley <joel@jms.id.au>

Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/mfd/aspeed-scu.txt b/Documentation/devicetree/bindings/mfd/aspeed-scu.txt
index 4d92c0bb6687..857ee33f7329 100644
--- a/Documentation/devicetree/bindings/mfd/aspeed-scu.txt
+++ b/Documentation/devicetree/bindings/mfd/aspeed-scu.txt
@@ -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>;
+};