[PATCH 05/13] dt-bindings: i2c: add bindings for microchip mpfs i2c

conor.dooley
2021-11-08T15:07:52Z

From: Conor Dooley <conor.dooley@microchip.com>

Add device tree bindings for the i2c controller on
the Microchip PolarFire SoC.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Daire McNamara <daire.mcnamara@microchip.com>
---
.../bindings/i2c/microchip,mpfs-i2c.yaml | 74 +++++++++++++++++++
1 file changed, 74 insertions(+)
create mode 100644 Documentation/devicetree/bindings/i2c/microchip,mpfs-i2c.yaml

diff --git a/Documentation/devicetree/bindings/i2c/microchip,mpfs-i2c.yaml b/Documentation/devicetree/bindings/i2c/microchip,mpfs-i2c.yaml
new file mode 100644
index 000000000000..bc4ea4498d35
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/microchip,mpfs-i2c.yaml
@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/microchip,mpfs-i2c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip MPFS I2C Controller Device Tree Bindings
+
+maintainers:
+ - Daire McNamara <daire.mcnamara@microchip.com>
+
+description: |
+ This I2C controller is found on the Microchip PolarFire SoC.
+
+allOf:
+ - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+ compatible:
+ enum:
+ - microchip,mpfs-i2c # Microchip PolarFire SoC compatible SoCs
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ description: Phandle of the clock feeding the I2C controller.
+ minItems: 1
+
+ clock-frequency:
+ description: |
+ Desired I2C bus clock frequency in Hz. As only Standard and Fast
+ modes are supported, possible values are 100000 and 400000.
+ enum: [100000, 400000]
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/microchip,mpfs-clock.h>
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ i2c@2010a000 {
+ compatible = "microchip,mpfs-i2c";
+ reg = <0 0x2010a000 0 0x1000>;
+ interrupts = <58>;
+ clock-frequency = <100000>;
+ clocks = <&clkcfg CLK_I2C0>;
+ };
+ };
+ - |
+ #include <dt-bindings/clock/microchip,mpfs-clock.h>
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ i2c@2010b000 {
+ compatible = "microchip,mpfs-i2c";
+ reg = <0 0x2010b000 0 0x1000>;
+ interrupts = <61>;
+ clock-frequency = <100000>;
+ clocks = <&clkcfg CLK_I2C1>;
+ };
+ };
+...
--
2.33.1