From 2956111189fb240a5f2ea1816c7ce97d219b558c Mon Sep 17 00:00:00 2001
From: Christian Marangi <ansuelsmth@gmail.com>
Date: Sat, 30 May 2026 21:53:29 +0100
Subject: [PATCH] dt-bindings: nvmem: airoha: add SMC eFuses schema

Add Airoha SMC eFuses schema to document new Airoha SoC AN7581/AN7583
way of accessing the 2 eFuse bank via the SMC command.

Each eFuse bank expose 64 eFuse cells of 32 bit used to give information
on HW Revision, PHY Calibration,  Device Model, Private Key and
all kind of other info specific to the SoC or the running system.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Srinivas Kandagatla <srini@kernel.org>
Link: https://patch.msgid.link/20260530205333.117458-11-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 .../bindings/nvmem/airoha,smc-efuses.yaml     | 67 +++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/nvmem/airoha,smc-efuses.yaml

diff --git a/Documentation/devicetree/bindings/nvmem/airoha,smc-efuses.yaml b/Documentation/devicetree/bindings/nvmem/airoha,smc-efuses.yaml
new file mode 100644
index 000000000000..c52f8d4bec39
--- /dev/null
+++ b/Documentation/devicetree/bindings/nvmem/airoha,smc-efuses.yaml
@@ -0,0 +1,67 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/nvmem/airoha,smc-efuses.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Airoha SMC eFuses
+
+description: |
+  Airoha new SoC AN7581 expose banks of eFuse accessible
+  via specific SMC commands.
+
+  2 different bank of eFuse or 64 cells of 32 bit are exposed
+  read-only used to give information on HW Revision, PHY Calibration,
+  Device Model, Private Key...
+
+maintainers:
+  - Christian Marangi <ansuelsmth@gmail.com>
+
+properties:
+  compatible:
+    enum:
+      - airoha,an7581-efuses
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+patternProperties:
+  '^efuse-bank@[0-1]$':
+    type: object
+
+    allOf:
+      - $ref: nvmem.yaml#
+
+    properties:
+      reg:
+        description: Identify the eFuse bank.
+        enum: [0, 1]
+
+    required:
+      - reg
+
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - '#address-cells'
+  - '#size-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    efuse {
+        compatible = "airoha,an7581-efuses";
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        efuse-bank@0 {
+           reg = <0>;
+        };
+    };
+
+...