linux-kernel - [PATCH v22 17/18] dt-bindings: mtd: pl353-nand: Describe this hardware controller

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Date:   Wed,  9 Jun 2021 10:01:11 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Tudor Ambarus <Tudor.Ambarus@...rochip.com>,
        <linux-mtd@...ts.infradead.org>, Rob Herring <robh+dt@...nel.org>,
        <devicetree@...r.kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Cc:     Michal Simek <monstr@...str.eu>,
        Naga Sureshkumar Relli <nagasure@...inx.com>,
        Amit Kumar Mahapatra <akumarma@...inx.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, helmut.grohne@...enta.de,
        Srinivas Goud <sgoud@...inx.com>,
        Siva Durga Prasad Paladugu <sivadur@...inx.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>
Subject: [PATCH v22 17/18] dt-bindings: mtd: pl353-nand: Describe this hardware controller

Add a yaml description of this NAND controller which is described as a
subnode of the SMC bus.

Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
---
 .../bindings/mtd/arm,pl353-nand-r2p1.yaml     | 57 +++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mtd/arm,pl353-nand-r2p1.yaml

diff --git a/Documentation/devicetree/bindings/mtd/arm,pl353-nand-r2p1.yaml b/Documentation/devicetree/bindings/mtd/arm,pl353-nand-r2p1.yaml
new file mode 100644
index 000000000000..e72fa14b4385
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/arm,pl353-nand-r2p1.yaml
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/arm,pl353-nand-r2p1.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: PL353 NAND Controller device tree bindings
+
+allOf:
+  - $ref: "nand-controller.yaml"
+
+maintainers:
+  - Miquel Raynal <miquel.raynal@...tlin.com>
+  - Naga Sureshkumar Relli <naga.sureshkumar.relli@...inx.com>
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - arm,pl353-nand-r2p1
+
+  reg:
+    items:
+      - items:
+          - description: CS with regard to the parent ranges property
+          - description: Offset of the memory region requested by the device
+          - description: Length of the memory region requested by the device
+
+  "#address-cells": true
+  "#size-cells": true
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    smcc: memory-controller@...0e000 {
+      compatible = "arm,pl353-smc-r2p1", "arm,primecell";
+      reg = <0xe000e000 0x0001000>;
+      clock-names = "memclk", "apb_pclk";
+      clocks = <&clkc 11>, <&clkc 44>;
+      ranges = <0x0 0x0 0xe1000000 0x1000000 /* Nand CS region */
+                0x1 0x0 0xe2000000 0x2000000 /* SRAM/NOR CS0 region */
+                0x2 0x0 0xe4000000 0x2000000>; /* SRAM/NOR CS1 region */
+      #address-cells = <2>;
+      #size-cells = <1>;
+
+      nfc0: nand-controller@0,0 {
+        compatible = "arm,pl353-nand-r2p1";
+        reg = <0 0 0x1000000>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+      };
+    };
-- 
2.27.0