linux-kernel - [PATCH v4 2/5] dt-bindings: nintendo-otp: Document the Wii and Wii U OTP support

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Date:   Sun,  1 Aug 2021 09:38:19 +0200
From:   Emmanuel Gil Peyrot <linkmauve@...kmauve.fr>
To:     Rob Herring <robh+dt@...nel.org>, linuxppc-dev@...ts.ozlabs.org,
        devicetree@...r.kernel.org
Cc:     Emmanuel Gil Peyrot <linkmauve@...kmauve.fr>,
        Ash Logan <ash@...quark.com>,
        Jonathan Neuschäfer <j.ne@...teo.net>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>, linux-kernel@...r.kernel.org
Subject: [PATCH v4 2/5] dt-bindings: nintendo-otp: Document the Wii and Wii U OTP support

Both of these consoles use the exact same two registers, even at the
same address, but the Wii U has eight banks of 128 bytes memory while
the Wii only has one, hence the two compatible strings.

Signed-off-by: Emmanuel Gil Peyrot <linkmauve@...kmauve.fr>
---
 .../bindings/nvmem/nintendo-otp.yaml          | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/nvmem/nintendo-otp.yaml

diff --git a/Documentation/devicetree/bindings/nvmem/nintendo-otp.yaml b/Documentation/devicetree/bindings/nvmem/nintendo-otp.yaml
new file mode 100644
index 000000000000..dbe4ffdd644c
--- /dev/null
+++ b/Documentation/devicetree/bindings/nvmem/nintendo-otp.yaml
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/nvmem/nintendo-otp.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Nintendo Wii and Wii U OTP Device Tree Bindings
+
+description: |
+  This binding represents the OTP memory as found on a Nintendo Wii or Wii U,
+  which contains common and per-console keys, signatures and related data
+  required to access peripherals.
+
+  See https://wiiubrew.org/wiki/Hardware/OTP
+
+maintainers:
+  - Emmanuel Gil Peyrot <linkmauve@...kmauve.fr>
+
+allOf:
+  - $ref: "nvmem.yaml#"
+
+properties:
+  compatible:
+    enum:
+      - nintendo,hollywood-otp
+      - nintendo,latte-otp
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    otp@...01ec {
+        compatible = "nintendo,latte-otp";
+        reg = <0x0d8001ec 0x8>;
+    };
+
+...
-- 
2.32.0