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[PATCH/RFC,2/8] dt-bindings: fuse: Document R-Car E-FUSE / OTP_MEM

Message ID 1bdad606a9c07df40d1c2fd77bbdad350a981aa1.1714642390.git.geert+renesas@glider.be (mailing list archive)
State Superseded
Delegated to: Geert Uytterhoeven
Headers show
Series Add R-Car fuse support | expand

Commit Message

Geert Uytterhoeven May 2, 2024, 9:57 a.m. UTC 
Document support for E-FUSE non-volatile memory accessible through
OTP_MEM on R-Car V4H and V4M.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 .../bindings/fuse/renesas,rcar-otp.yaml       | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/fuse/renesas,rcar-otp.yaml
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Patch

diff --git a/Documentation/devicetree/bindings/fuse/renesas,rcar-otp.yaml b/Documentation/devicetree/bindings/fuse/renesas,rcar-otp.yaml
new file mode 100644
index 0000000000000000..d74872ae9ff378f9
--- /dev/null
+++ b/Documentation/devicetree/bindings/fuse/renesas,rcar-otp.yaml
@@ -0,0 +1,38 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/fuse/renesas,rcar-otp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: R-Car E-FUSE connected to OTP_MEM
+
+maintainers:
+  - Geert Uytterhoeven <geert+renesas@glider.be>
+
+description:
+  The E-FUSE is a type of non-volatile memory, which is accessible through the
+  One-Time Programmable Memory (OTP_MEM) module on some R-Car Gen4 SoCs.
+
+properties:
+  compatible:
+    enum:
+      - renesas,r8a779g0-otp # R-CarV4H
+      - renesas,r8a779h0-otp # R-CarV4M
+
+  reg:
+    items:
+      - description: OTP_MEM_0
+      - description: OTP_MEM_1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    otp: otp@e61be000 {
+            compatible = "renesas,r8a779g0-otp";
+            reg = <0xe61be000 0x1000>, <0xe61bf000 0x1000>;
+    };