linux-kernel - [PATCH 1/3] dt-bindings: nvmem: Add the nxp,s32g-ocotp yaml file

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Message-ID: <7d0e025ed3fdc9e545f1d0b84f6a1cbb9dfb4e91.1755341000.git.dan.carpenter@linaro.org>
Date: Sat, 16 Aug 2025 13:47:03 +0300
From: Ciprian Costea <dan.carpenter@...aro.org>
To: Srinivas Kandagatla <srini@...nel.org>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Ciprian Costea <ciprianmarian.costea@....com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linaro-s32@...aro.org, NXP S32 Linux Team <s32@....com>,
	Srinivas Kandagatla <srini@...nel.org>
Subject: [PATCH 1/3] dt-bindings: nvmem: Add the nxp,s32g-ocotp yaml file

Add bindings to expose the On Chip One-Time Programmable Controller
(OCOTP) for the NXP s32g chipset.  There are three versions of this
chip but they're compatible so we can fall back to the nxp,s32g2-ocotp
compatible.

Signed-off-by: Ciprian Costea <ciprianmarian.costea@....com>
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
 .../bindings/nvmem/nxp,s32g-ocotp-nvmem.yaml  | 57 +++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/nvmem/nxp,s32g-ocotp-nvmem.yaml

diff --git a/Documentation/devicetree/bindings/nvmem/nxp,s32g-ocotp-nvmem.yaml b/Documentation/devicetree/bindings/nvmem/nxp,s32g-ocotp-nvmem.yaml
new file mode 100644
index 000000000000..19f3bb6b7eb0
--- /dev/null
+++ b/Documentation/devicetree/bindings/nvmem/nxp,s32g-ocotp-nvmem.yaml
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/nvmem/nxp,s32g-ocotp-nvmem.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP S32G OCOTP NVMEM driver
+
+maintainers:
+  - Ciprian Costea <ciprianmarian.costea@....com>
+
+description: |
+  The drivers provides an interface to access One Time
+  Programmable memory pages, such as TMU fuse values.
+
+allOf:
+  - $ref: nvmem.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - items:
+          - enum:
+              - nxp,s32g3-ocotp
+              - nxp,s32r45-ocotp
+          - const: nxp,s32g2-ocotp
+
+  reg:
+    description:
+      Address and Size of the fuse bank to be read.
+    maxItems: 1
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - '#address-cells'
+  - '#size-cells'
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/nvmem/s32g-ocotp-nvmem.h>
+
+    ocotp: ocotp@...a4000 {
+      compatible = "nxp,s32g2-ocotp";
+      reg = <0x400a4000 0x400>;
+      #address-cells = <1>;
+      #size-cells = <1>;
+      status = "okay";
+    };
-- 
2.47.2