linux-kernel - [PATCH 1/5] dt-bindings: mtd: samsung-onenand: Add new binding

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Date:   Fri, 22 Apr 2022 20:45:24 -0700
From:   Jonathan Bakker <xc-racer2@...e.ca>
To:     Miquel Raynal <miquel.raynal@...tlin.com>
Cc:     Kyungmin Park <kyungmin.park@...sung.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Jonathan Bakker <xc-racer2@...e.ca>
Subject: [PATCH 1/5] dt-bindings: mtd: samsung-onenand: Add new binding

Add a yaml binding document for the Samsung OneNAND controller.
It is found in several older Samsung SoC, notably the S5PV210.

Signed-off-by: Jonathan Bakker <xc-racer2@...e.ca>
---
 .../bindings/mtd/samsung,onenand.yaml         | 89 +++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mtd/samsung,onenand.yaml

diff --git a/Documentation/devicetree/bindings/mtd/samsung,onenand.yaml b/Documentation/devicetree/bindings/mtd/samsung,onenand.yaml
new file mode 100644
index 000000000000..25012248add6
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/samsung,onenand.yaml
@@ -0,0 +1,89 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/samsung,onenand.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung OneNAND controller
+
+maintainers:
+  - Jonathan Bakker <xc-racer2@...e.ca>
+
+properties:
+  compatible:
+    enum:
+      - samsung,s3c6400-onenand
+      - samsung,s3c6410-onenand
+      - samsung,s5pv210-onenand
+
+  reg:
+    maxItems: 3
+
+  interrupts:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: bus
+      - const: onenand
+
+  clocks:
+    minItems: 2
+    maxItems: 2
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+allOf:
+  - $ref: nand-controller.yaml
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - samsung,s5pv210-onenand
+    then:
+      required:
+        - interrupts
+        - clock-names
+        - clocks
+
+patternProperties:
+  "^nand@[a-f0-9]+$":
+    type: object
+    properties:
+      reg:
+        minimum: 0
+        maximum: 1
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/s5pv210.h>
+    onenand: nand-controller@...00000 {
+        compatible = "samsung,s5pv210-onenand";
+        reg = <0xb0600000 0x2000>,
+          <0xb0000000 0x20000>,
+          <0xb0040000 0x20000>;
+        interrupt-parent = <&vic1>;
+        interrupts = <31>;
+        clocks = <&clocks CLK_NANDXL>, <&clocks DOUT_FLASH>;
+        clock-names = "bus", "onenand";
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        nand@0 {
+          reg = <0>;
+        };
+    };
-- 
2.30.2