[PATCH v5 2/5] dt-bindings: i2c: Add hpe,gxp-i2c

nick.hawkins
2023-02-17T15:56:42Z

Document compatibility string to support I2C controller
in GXP.

Signed-off-by: Nick Hawkins <nick.hawkins@hpe.com>

---
v5:
*No change
v4:
*Provide even greater description with the use
of Phandle
*Reorder properties so they match the required
order
v3:
*Provide better description with use of Phandle
v2:
*Removed uneccessary size-cells and address-cells
*Removed phandle from hpe,sysreg-phandle
*Changed hpe,i2c-max-bus-freq to clock-frequency
---
.../devicetree/bindings/i2c/hpe,gxp-i2c.yaml | 59 +++++++++++++++++++
1 file changed, 59 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..6604dcd47251
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/hpe,gxp-i2c.yaml
@@ -0,0 +1,59 @@
+# 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@hpe.com>
+
+allOf:
+ - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+ compatible:
+ const: hpe,gxp-i2c
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clock-frequency:
+ default: 100000
+
+ hpe,sysreg:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ Phandle to the global status and enable interrupt registers shared
+ between each I2C engine controller instance. It enables the I2C
+ engine controller to act as both a master or slave by being able to
+ arm and respond to interrupts from its engine. Each bit in the
+ registers represent the respective bit position.
+
+required:
+ - compatible
+ - reg
+ - interrupts
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ i2c@2600 {
+ compatible = "hpe,gxp-i2c";
+ reg = <0x2500 0x70>;
+ interrupts = <9>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ hpe,sysreg = <&sysreg_system_controller>;
+ clock-frequency = <10000>;
+
+ eeprom@50 {
+ compatible = "atmel,24c128";
+ reg = <0x50>;
+ };
+ };