linux-kernel - [PATCH] dt-bindings: mtd: nand-micronix: convert to DT schema

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Message-Id: <20251230-macronix-v1-1-ff2aaab43644@gmail.com>
Date: Tue, 30 Dec 2025 07:20:21 +0000
From: Akhila YS <akhilayalmati@...il.com>
To: Miquel Raynal <miquel.raynal@...tlin.com>, 
 Richard Weinberger <richard@....at>, Vignesh Raghavendra <vigneshr@...com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-mtd@...ts.infradead.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Akhila YS <akhilayalmati@...il.com>
Subject: [PATCH] dt-bindings: mtd: nand-micronix: convert to DT schema

Convert Macronix NAND Randomizer OTP Enable Property binding to YAML format.

Signed-off-by: Akhila YS <akhilayalmati@...il.com>
---
 .../devicetree/bindings/mtd/nand-macronix.txt      | 27 --------------
 .../devicetree/bindings/mtd/nand-macronix.yaml     | 41 ++++++++++++++++++++++
 2 files changed, 41 insertions(+), 27 deletions(-)

diff --git a/Documentation/devicetree/bindings/mtd/nand-macronix.txt b/Documentation/devicetree/bindings/mtd/nand-macronix.txt
deleted file mode 100644
index ffab28a2c4d1..000000000000
--- a/Documentation/devicetree/bindings/mtd/nand-macronix.txt
+++ /dev/null
@@ -1,27 +0,0 @@
-Macronix NANDs Device Tree Bindings
------------------------------------
-
-Macronix NANDs support randomizer operation for scrambling user data,
-which can be enabled with a SET_FEATURE. The penalty when using the
-randomizer are subpage accesses prohibited and more time period needed
-for program operation, i.e., tPROG 300us to 340us (randomizer enabled).
-Enabling the randomizer is a one time persistent and non reversible
-operation.
-
-For more high-reliability concern, if subpage write is not available
-with hardware ECC and not enabled at UBI level, then enabling the
-randomizer is recommended by default by adding a new specific property
-in children nodes.
-
-Required NAND chip properties in children mode:
-- randomizer enable: should be "mxic,enable-randomizer-otp"
-
-Example:
-
-	nand: nand-controller@...t-address {
-
-		nand@0 {
-			reg = <0>;
-			mxic,enable-randomizer-otp;
-		};
-	};
diff --git a/Documentation/devicetree/bindings/mtd/nand-macronix.yaml b/Documentation/devicetree/bindings/mtd/nand-macronix.yaml
new file mode 100644
index 000000000000..10f1d58adcef
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/nand-macronix.yaml
@@ -0,0 +1,41 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/nand-macronix.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Macronix NAND Randomizer OTP Enable Property
+
+maintainers:
+  - Miquel Raynal <miquel.raynal@...tlin.com>
+  - Richard Weinberger <richard@....at>
+
+description:
+  Macronix NAND chips support an optional one-time programmable (OTP)
+  data randomizer that scrambles user data to improve reliability.
+  Enabling it is irreversible, prohibits subpage accesses, and slightly
+  increases program time. This property requests the driver to enable
+  the randomizer if not already set.
+
+properties:
+  mxic,enable-randomizer-otp:
+    type: boolean
+    description:
+      Presence of this property indicates that the data randomizer should
+      be enabled in OTP mode on the NAND chip.
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    nand-controller {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        nand@0 {
+            reg = <0>;
+            mxic,enable-randomizer-otp;
+        };
+    };
+
+...

---
base-commit: cc3aa43b44bdb43dfbac0fcb51c56594a11338a8
change-id: 20251229-macronix-c9d8b32c00cf

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