linux-kernel - [PATCH v2 2/8] dt-bindings: fuse: Document R-Car E-FUSE / OTP

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Date: Wed, 29 May 2024 11:29:31 +0200
From: Geert Uytterhoeven <geert+renesas@...der.be>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Magnus Damm <magnus.damm@...il.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
Cc: devicetree@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	linux-gpio@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH v2 2/8] dt-bindings: fuse: Document R-Car E-FUSE / OTP_MEM

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@...der.be>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
---
v2:
  - Add Reviewed-by.
---
 .../bindings/fuse/renesas,rcar-otp.yaml       | 38 +++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/fuse/renesas,rcar-otp.yaml

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@...der.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@...be000 {
+            compatible = "renesas,r8a779g0-otp";
+            reg = <0xe61be000 0x1000>, <0xe61bf000 0x1000>;
+    };
-- 
2.34.1