linux-kernel - [PATCH v2 3/3] dt-bindings: hwinfo: Add mtk-socinfo driver

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Date:   Fri, 15 Sep 2023 23:26:07 +0800
From:   William-tw Lin <william-tw.lin@...iatek.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Kevin Hilman <khilman@...nel.org>
CC:     <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>,
        William-tw Lin <william-tw.lin@...iatek.com>
Subject: [PATCH v2 3/3] dt-bindings: hwinfo: Add mtk-socinfo driver

dt-binding documentation for mtk-socinfo driver.
mtk-socinfo driver provides SoC-related information.
Such information includes manufacturer information, SoC name,
SoC segment name, and SoC marketing name.

Signed-off-by: William-tw Lin <william-tw.lin@...iatek.com>
---
 .../bindings/hwinfo/mtk-socinfo.yaml          | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/hwinfo/mtk-socinfo.yaml

diff --git a/Documentation/devicetree/bindings/hwinfo/mtk-socinfo.yaml b/Documentation/devicetree/bindings/hwinfo/mtk-socinfo.yaml
new file mode 100644
index 000000000000..74f03f1dc404
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwinfo/mtk-socinfo.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwinfo/mtk-socinfo.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek SoC ChipID
+
+maintainers:
+  - William Lin <william-tw.lin@...iatek.com>
+  - Matthias Brugger <matthias.bgg@...il.com>
+  - Kevin Hilman <khilman@...nel.org>
+  - AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
+
+description:
+  MediaTek SoCs store various product information in eFuses, including
+  Chip ID and Revision fields, usable to identify the manufacturer,
+  SoC version, plus segment and marketing names.
+
+properties:
+  compatible:
+    const: mediatek,socinfo
+
+  nvmem-cells:
+    maxItems: 2
+    description: Phandle to nvmem cells containing SoC identification data
+
+  nvmem-cell-names:
+    minItems: 1
+    items:
+      - const: socinfo-data1
+      - const: socinfo-data2
+
+required:
+  - compatible
+  - nvmem-cells
+  - nvmem-cell-names
+
+additionalProperties: false
+
+examples:
+  - |
+        socinfo {
+            compatible = "mediatek,socinfo";
+            nvmem-cells = <&socinfo_data1>, <&socinfo_data2>;
+            nvmem-cell-names = "socinfo-data1", "socinfo-data2";
+        };
+
-- 
2.18.0