linux-kernel - [PATCH 1/2] dt-bindings: nvmem: Add sophgo,efuses

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Message-Id: <20231119131332.999-2-jszhang@kernel.org>
Date:   Sun, 19 Nov 2023 21:13:31 +0800
From:   Jisheng Zhang <jszhang@...nel.org>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-riscv@...ts.infradead.org, Chao Wei <chao.wei@...hgo.com>,
        Chen Wang <unicorn_wang@...look.com>
Subject: [PATCH 1/2] dt-bindings: nvmem: Add sophgo,efuses

Sophgo SoCs such as CV1800B come with eFuses used to store
factory-programmed data such as calibration settings for the built-in
ethernet PHY.

Signed-off-by: Jisheng Zhang <jszhang@...nel.org>
---
 .../bindings/nvmem/sophgo,efuse.yaml          | 54 +++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/nvmem/sophgo,efuse.yaml

diff --git a/Documentation/devicetree/bindings/nvmem/sophgo,efuse.yaml b/Documentation/devicetree/bindings/nvmem/sophgo,efuse.yaml
new file mode 100644
index 000000000000..e4ae81a1742a
--- /dev/null
+++ b/Documentation/devicetree/bindings/nvmem/sophgo,efuse.yaml
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/nvmem/sophgo,efuse.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sophgo SoC eFuse-based NVMEM
+
+description: |
+  Sophgo SoCs such as the CV1800B contain factory-programmed eFuses used to e.g. store
+  calibration data for the built-in ethernet PHY.
+maintainers:
+  - Jisheng Zhang <jszhang@...nel.org>
+
+allOf:
+  - $ref: nvmem.yaml#
+  - $ref: nvmem-deprecated-cells.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - sophgo,cv1800b-efuse
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    description:
+      eFuse clock id.
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    efuse@...0000 {
+        compatible = "sophgo,cv1800b-efuse";
+        reg = <0x3050000 0x1000>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        clocks = <&clk 1>;
+
+        ephy_txitune: ephy-txitune@24 {
+            reg = <0x24 0x4>;
+        };
+    };
+
+...
-- 
2.42.0