linux-kernel - [PATCH v2 1/2] dt-bindings: mtd: spi-nand: Convert to DT schema format

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Date:   Mon, 20 Sep 2021 19:57:12 +0530
From:   Apurva Nandan <a-nandan@...com>
To:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Serge Semin <fancer.lancer@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Apurva Nandan <a-nandan@...com>,
        <linux-mtd@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-spi@...r.kernel.org>
CC:     <michael@...le.cc>
Subject: [PATCH v2 1/2] dt-bindings: mtd: spi-nand: Convert to DT schema format

Convert spi-nand.txt binding to YAML format with an added example.

Signed-off-by: Apurva Nandan <a-nandan@...com>
---
 .../devicetree/bindings/mtd/spi-nand.txt      |  5 --
 .../devicetree/bindings/mtd/spi-nand.yaml     | 62 +++++++++++++++++++
 2 files changed, 62 insertions(+), 5 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/mtd/spi-nand.txt
 create mode 100644 Documentation/devicetree/bindings/mtd/spi-nand.yaml

diff --git a/Documentation/devicetree/bindings/mtd/spi-nand.txt b/Documentation/devicetree/bindings/mtd/spi-nand.txt
deleted file mode 100644
index 8b51f3b6d55c..000000000000
--- a/Documentation/devicetree/bindings/mtd/spi-nand.txt
+++ /dev/null
@@ -1,5 +0,0 @@
-SPI NAND flash
-
-Required properties:
-- compatible: should be "spi-nand"
-- reg: should encode the chip-select line used to access the NAND chip
diff --git a/Documentation/devicetree/bindings/mtd/spi-nand.yaml b/Documentation/devicetree/bindings/mtd/spi-nand.yaml
new file mode 100644
index 000000000000..601beba8d971
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/spi-nand.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/spi-nand.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SPI NAND flash
+
+maintainers:
+  - Apurva Nandan <a-nandan@...com>
+
+allOf:
+  - $ref: "mtd.yaml#"
+
+properties:
+  compatible:
+    const: spi-nand
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency: true
+  spi-rx-bus-width: true
+  spi-tx-bus-width: true
+  rx-sample-delay-ns: true
+
+  '#address-cells': true
+  '#size-cells': true
+
+additionalProperties:
+  type: object
+
+examples:
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        flash@6 {
+            #address-cells = <1>;
+            #size-cells = <1>;
+            compatible = "spi-nand";
+            reg = <0x6>;
+            spi-max-frequency = <42000000>;
+
+            partitions {
+                compatible = "fixed-partitions";
+                #address-cells = <1>;
+                #size-cells = <1>;
+
+                partition@0 {
+                    label = "boot";
+                    reg = <0 0x200000>;
+                };
+
+                partition@...000 {
+                    label = "rootfs";
+                    reg = <0x200000 0xce0000>;
+                };
+            };
+        };
+    };
-- 
2.25.1