linux-kernel - [PATCH] dt-bindings: mtd: microchip,mchp23k256: convert to DT schema

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Message-Id: <20251229-nxp-v1-1-a415fe0080a8@gmail.com>
Date: Mon, 29 Dec 2025 12:49:00 +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: microchip,mchp23k256: convert to DT
 schema

Convert Microchip 23K256 SPI SRAM MTD driver binding to YAML format.

Signed-off-by: Akhila YS <akhilayalmati@...il.com>
---
 .../bindings/mtd/microchip,mchp23k256.txt          | 18 -------
 .../bindings/mtd/microchip,mchp23k256.yaml         | 58 ++++++++++++++++++++++
 2 files changed, 58 insertions(+), 18 deletions(-)

diff --git a/Documentation/devicetree/bindings/mtd/microchip,mchp23k256.txt b/Documentation/devicetree/bindings/mtd/microchip,mchp23k256.txt
deleted file mode 100644
index 7328eb92a03c..000000000000
--- a/Documentation/devicetree/bindings/mtd/microchip,mchp23k256.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-* MTD SPI driver for Microchip 23K256 (and similar) serial SRAM
-
-Required properties:
-- #address-cells, #size-cells : Must be present if the device has sub-nodes
-  representing partitions.
-- compatible : Must be one of "microchip,mchp23k256" or "microchip,mchp23lcv1024"
-- reg : Chip-Select number
-- spi-max-frequency : Maximum frequency of the SPI bus the chip can operate at
-
-Example:
-
-	spi-sram@0 {
-		#address-cells = <1>;
-		#size-cells = <1>;
-		compatible = "microchip,mchp23k256";
-		reg = <0>;
-		spi-max-frequency = <20000000>;
-	};
diff --git a/Documentation/devicetree/bindings/mtd/microchip,mchp23k256.yaml b/Documentation/devicetree/bindings/mtd/microchip,mchp23k256.yaml
new file mode 100644
index 000000000000..e6cdfa5f0808
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/microchip,mchp23k256.yaml
@@ -0,0 +1,58 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/microchip,mchp23k256.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip 23K256 (and similar) SPI SRAM MTD driver
+
+maintainers:
+  - Richard Weinberger <richard@....at>
+
+description: |
+  Driver for Microchip 23K256 and compatible (e.g. 23LCV1024) serial SRAM devices
+  accessed via SPI. The device exposes the SRAM as an MTD device and supports
+  optional partitioning via child nodes.
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+  compatible:
+    enum:
+      - microchip,mchp23k256
+      - microchip,mchp23lcv1024
+
+  reg:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+required:
+  - reg
+  - compatible
+  - "#address-cells"
+  - "#size-cells"
+  - spi-max-frequency
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        sram@0 {
+            #address-cells = <1>;
+            #size-cells = <1>;
+            compatible = "microchip,mchp23k256";
+            reg = <0>;
+            spi-max-frequency = <20000000>;
+        };
+    };
+...

---
base-commit: cc3aa43b44bdb43dfbac0fcb51c56594a11338a8
change-id: 20251229-nxp-526e29da9f29

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