linux-kernel - [PATCH 2/5] dt-bindings: nvmem: add YAML schema for the ONIE tlv layout

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Message-Id: <20221028092337.822840-3-miquel.raynal@bootlin.com>
Date:   Fri, 28 Oct 2022 11:23:34 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        <linux-kernel@...r.kernel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        devicetree@...r.kernel.org
Cc:     Marcin Wojtas <mw@...ihalf.com>,
        Russell King <linux@...linux.org.uk>,
        Maxime Chevallier <maxime.chevallier@...tlin.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>, netdev@...r.kernel.org,
        Robert Marko <robert.marko@...tura.hr>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Michael Walle <michael@...le.cc>,
        Miquel Raynal <miquel.raynal@...tlin.com>
Subject: [PATCH 2/5] dt-bindings: nvmem: add YAML schema for the ONIE tlv layout

Add a schema for the ONIE tlv NVMEM layout that can be found on any ONIE
compatible networking device.

Signed-off-by: Miquel Raynal <miquel.raynal@...tlin.com>
---
 .../nvmem/layouts/onie,tlv-layout.yaml        | 96 +++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/nvmem/layouts/onie,tlv-layout.yaml

diff --git a/Documentation/devicetree/bindings/nvmem/layouts/onie,tlv-layout.yaml b/Documentation/devicetree/bindings/nvmem/layouts/onie,tlv-layout.yaml
new file mode 100644
index 000000000000..388547d46646
--- /dev/null
+++ b/Documentation/devicetree/bindings/nvmem/layouts/onie,tlv-layout.yaml
@@ -0,0 +1,96 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/nvmem/layouts/onie,tlv-layout.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVMEM layout of the ONIE tlv table
+
+maintainers:
+  - Miquel Raynal <miquel.raynal@...tlin.com>
+
+description:
+  Modern networking hardware implementing the Open Compute Project ONIE
+  infrastructure shall provide a non-volatile memory with a table whose the
+  content is well specified and gives many information about the manufacturer
+  (name, country of manufacture, etc) as well as device caracteristics (serial
+  number, hardware version, mac addresses, etc). The underlaying device type
+  (flash, EEPROM,...) is not specified. The exact location of each value is also
+  dynamic and should be discovered at run time because it depends on the
+  parameters the manufacturer decided to embed.
+
+allOf:
+  - $ref: "../nvmem.yaml#"
+
+select:
+  properties:
+    compatible:
+      contains:
+        const: onie,tlv-layout
+  required:
+    - compatible
+
+properties:
+  compatible: true
+
+  product-name: true
+
+  part-number: true
+
+  serial-number: true
+
+  mac-address:
+    type: object
+    description:
+      Base MAC address for all on-module network interfaces. The first
+      argument of the phandle will be treated as an offset.
+
+    properties:
+      "#nvmem-cell-cells":
+        const: 1
+
+    additionalProperties: false
+
+  manufacture-date: true
+
+  device-version: true
+
+  label-revision: true
+
+  platforn-name: true
+
+  onie-version: true
+
+  num-macs: true
+
+  manufacturer: true
+
+  country-code: true
+
+  vendor: true
+
+  diag-version: true
+
+  service-tag: true
+
+  vendor-extension: true
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+        onie {
+            compatible = "onie,tlv-layout", "vendor,device";
+
+            serial_number: serial-number {
+            };
+
+            mac_address: mac-address {
+                #nvmem-cell-cells = <1>;
+            };
+        };
+
+...
-- 
2.34.1