linux-kernel - [PATCH v1 2/6] dt-bindings: i2c: hpe,gxp-i2c

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Date:   Fri, 16 Dec 2022 12:35:28 -0600
From:   nick.hawkins@....com
To:     verdun@....com, nick.hawkins@....com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, lee@...nel.org,
        linux@...linux.org.uk, linux-i2c@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v1 2/6] dt-bindings: i2c: hpe,gxp-i2c

From: Nick Hawkins <nick.hawkins@....com>

Document binding to support I2C controller in GXP.

Signed-off-by: Nick Hawkins <nick.hawkins@....com>
---
 .../devicetree/bindings/i2c/hpe,gxp-i2c.yaml  | 63 +++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml

diff --git a/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml b/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml
new file mode 100644
index 000000000000..fa378e991fdb
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml
@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/hpe,gxp-i2c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HPE GXP SoC I2C Controller
+
+maintainers:
+  - Nick Hawkins <nick.hawkins@....com>
+
+allOf:
+  - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+  compatible:
+    const: hpe,gxp-i2c
+
+  '#address-cells':
+    const: 1
+
+  interrupts:
+    maxItems: 1
+
+  reg:
+    maxItems: 1
+
+  hpe,i2c-max-bus-freq:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Desired frequency in Hz of the bus.
+    default: 100000
+
+  hpe,sysreg-phandle:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: Pandle to syscon used to control the system registers.
+
+  '#size-cells':
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c@...0 {
+        compatible = "hpe,gxp-i2c";
+        reg = <0x2500 0x70>;
+        interrupts = <9>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+        hpe,sysreg-phandle = <&sysreg_system_controller>;
+        hpe,i2c-max-bus-freq = <10000>;
+
+        eeprom@50 {
+            compatible = "atmel,24c128";
+            reg = <0x50>;
+        };
+    };
-- 
2.17.1