linux-kernel - [PATCH] dt-bindings: nvmem: nxp,lpc1850-otp: convert to DT schema

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Message-Id: <20260123-lpc1850-otp-v1-1-8bd957dd9c98@gmail.com>
Date: Fri, 23 Jan 2026 15:19:47 +0000
From: Akhila YS <akhilayalmati@...il.com>
To: Srinivas Kandagatla <srini@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Akhila YS <akhilayalmati@...il.com>
Subject: [PATCH] dt-bindings: nvmem: nxp,lpc1850-otp: convert to DT schema

Convert NXP LPC18xx OTP memory controller binding to YAML format.

Signed-off-by: Akhila YS <akhilayalmati@...il.com>
---
 .../devicetree/bindings/nvmem/lpc1850-otp.txt      | 20 ---------
 .../devicetree/bindings/nvmem/nxp,lpc1850-otp.yaml | 51 ++++++++++++++++++++++
 2 files changed, 51 insertions(+), 20 deletions(-)

diff --git a/Documentation/devicetree/bindings/nvmem/lpc1850-otp.txt b/Documentation/devicetree/bindings/nvmem/lpc1850-otp.txt
deleted file mode 100644
index 853b6a754644..000000000000
--- a/Documentation/devicetree/bindings/nvmem/lpc1850-otp.txt
+++ /dev/null
@@ -1,20 +0,0 @@
-* NXP LPC18xx OTP memory
-
-Internal OTP (One Time Programmable) memory for NXP LPC18xx/43xx devices.
-
-Required properties:
-  - compatible: Should be "nxp,lpc1850-otp"
-  - reg: Must contain an entry with the physical base address and length
-    for each entry in reg-names.
-  - address-cells: must be set to 1.
-  - size-cells: must be set to 1.
-
-See nvmem.txt for more information.
-
-Example:
-  otp: otp@...45000 {
-    compatible = "nxp,lpc1850-otp";
-    reg = <0x40045000 0x1000>;
-    #address-cells = <1>;
-    #size-cells = <1>;
-  };
diff --git a/Documentation/devicetree/bindings/nvmem/nxp,lpc1850-otp.yaml b/Documentation/devicetree/bindings/nvmem/nxp,lpc1850-otp.yaml
new file mode 100644
index 000000000000..d37e928e7a35
--- /dev/null
+++ b/Documentation/devicetree/bindings/nvmem/nxp,lpc1850-otp.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/nvmem/nxp,lpc1850-otp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP LPC18xx / LPC43xx One-Time Programmable (OTP) memory
+
+maintainers:
+  - Srinivas Kandagatla <srini@...nel.org>
+
+description:
+  The internal OTP memory in NXP LPC18xx and LPC43xx microcontrollers
+  provides a dedicated non-volatile storage area designed for permanent,
+  one-time configuration and data storage.The OTP controller manages write
+  protection, programming sequencing, and error detection mechanisms to
+  guarantee reliable and safe permanent programming under software control.
+
+allOf:
+  - $ref: nvmem.yaml#
+
+properties:
+  compatible:
+    const: nxp,lpc1850-otp
+
+  reg:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - "#address-cells"
+  - "#size-cells"
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    otp@...45000 {
+        compatible = "nxp,lpc1850-otp";
+        reg = <0x40045000 0x1000>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+    };
+...

---
base-commit: cc3aa43b44bdb43dfbac0fcb51c56594a11338a8
change-id: 20260121-lpc1850-otp-eec5d3c3072c

Best regards,
-- 
Akhila YS <akhilayalmati@...il.com>