linux-kernel - [PATCH v7 1/3] dt-bindings: mtd: Add Loongson-1 NAND Controller

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Date: Tue, 30 Apr 2024 19:11:10 +0800
From: Keguang Zhang via B4 Relay <devnull+keguang.zhang.gmail.com@...nel.org>
To: Miquel Raynal <miquel.raynal@...tlin.com>, 
 Richard Weinberger <richard@....at>, Vignesh Raghavendra <vigneshr@...com>, 
 Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 linux-mips@...r.kernel.org, devicetree@...r.kernel.org, 
 Keguang Zhang <keguang.zhang@...il.com>
Subject: [PATCH v7 1/3] dt-bindings: mtd: Add Loongson-1 NAND Controller

From: Keguang Zhang <keguang.zhang@...il.com>

Add devicetree binding document for Loongson-1 NAND Controller.

Signed-off-by: Keguang Zhang <keguang.zhang@...il.com>
---
Changes in v7:
- rename the file to loongson,ls1b-nfc.yaml

Changes in v6:
- A newly added patch
---
 .../devicetree/bindings/mtd/loongson,ls1b-nfc.yaml | 66 ++++++++++++++++++++++
 1 file changed, 66 insertions(+)

diff --git a/Documentation/devicetree/bindings/mtd/loongson,ls1b-nfc.yaml b/Documentation/devicetree/bindings/mtd/loongson,ls1b-nfc.yaml
new file mode 100644
index 000000000000..a69f22b9fd9e
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/loongson,ls1b-nfc.yaml
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/loongson,ls1b-nfc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Loongson-1 NAND Controller
+
+maintainers:
+  - Keguang Zhang <keguang.zhang@...il.com>
+
+allOf:
+  - $ref: nand-controller.yaml
+
+properties:
+  compatible:
+    oneOf:
+      - const: loongson,ls1b-nfc
+      - items:
+          - enum:
+              - loongson,ls1a-nfc
+              - loongson,ls1c-nfc
+          - const: loongson,ls1b-nfc
+
+  reg:
+    maxItems: 1
+
+  dmas:
+    maxItems: 1
+
+  dma-names:
+    const: rxtx
+
+patternProperties:
+  "^nand@[0-3]$":
+    type: object
+    $ref: raw-nand-chip.yaml
+
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - dmas
+  - dma-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    nand-controller@...78000 {
+        compatible = "loongson,ls1b-nfc";
+        reg = <0x1fe78000 0x40>;
+
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        dmas = <&dma 0>;
+        dma-names = "rxtx";
+
+        nand@0 {
+            reg = <0>;
+            nand-use-soft-ecc-engine;
+            nand-ecc-algo = "hamming";
+        };
+    };

-- 
2.40.1