[PATCH] dt-bindings: i2c: convert davinci i2c to dt-schema

[PATCH] dt-bindings: i2c: convert davinci i2c to dt-schema

[Chaitanya Sabnis]

Convert the Texas Instruments DaVinci and Keystone I2C controller
bindings from legacy text format to modern dt-schema (YAML).

During the conversion, the `interrupts` property was made required
to match the strict requirement in the driver probe function. The
custom `ti,has-pfunc` and `power-domains` properties were also
properly defined to match SoC-specific hardware features.

Signed-off-by: Chaitanya Sabnis <chaitanya.msabnis@gmail.com>
---
 .../devicetree/bindings/i2c/i2c-davinci.txt   | 43 -------------
 .../bindings/i2c/ti,davinci-i2c.yaml          | 62 +++++++++++++++++++
 2 files changed, 62 insertions(+), 43 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/i2c/i2c-davinci.txt
 create mode 100644 Documentation/devicetree/bindings/i2c/ti,davinci-i2c.yaml

diff --git a/Documentation/devicetree/bindings/i2c/i2c-davinci.txt b/Documentation/devicetree/bindings/i2c/i2c-davinci.txt
deleted file mode 100644
index 6590501c53d4..000000000000
--- a/Documentation/devicetree/bindings/i2c/i2c-davinci.txt
+++ /dev/null
@@ -1,43 +0,0 @@
-* Texas Instruments Davinci/Keystone I2C
-
-This file provides information, what the device node for the
-davinci/keystone i2c interface contains.
-
-Required properties:
-- compatible: "ti,davinci-i2c" or "ti,keystone-i2c";
-- reg : Offset and length of the register set for the device
-- clocks: I2C functional clock phandle.
-	  For 66AK2G this property should be set per binding,
-	  Documentation/devicetree/bindings/clock/ti,sci-clk.yaml
-
-SoC-specific Required Properties:
-
-The following are mandatory properties for Keystone 2 66AK2G SoCs only:
-
-- power-domains:	Should contain a phandle to a PM domain provider node
-			and an args specifier containing the I2C device id
-			value. This property is as per the binding,
-			Documentation/devicetree/bindings/soc/ti/sci-pm-domain.yaml
-
-Recommended properties :
-- interrupts : standard interrupt property.
-- clock-frequency : desired I2C bus clock frequency in Hz.
-- ti,has-pfunc: boolean; if defined, it indicates that SoC supports PFUNC
-	registers. PFUNC registers allow to switch I2C pins to function as
-	GPIOs, so they can be toggled manually.
-
-Example (enbw_cmc board):
-	i2c@1c22000 {
-		compatible = "ti,davinci-i2c";
-		reg = <0x22000 0x1000>;
-		clock-frequency = <100000>;
-		interrupts = <15>;
-		interrupt-parent = <&intc>;
-		#address-cells = <1>;
-		#size-cells = <0>;
-
-		dtt@48 {
-			compatible = "national,lm75";
-			reg = <0x48>;
-		};
-	};
diff --git a/Documentation/devicetree/bindings/i2c/ti,davinci-i2c.yaml b/Documentation/devicetree/bindings/i2c/ti,davinci-i2c.yaml
new file mode 100644
index 000000000000..89c639d023a3
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/ti,davinci-i2c.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/ti,davinci-i2c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments DaVinci/Keystone I2C
+
+maintainers:
+  - Chaitanya Sabnis <chaitanya.msabni@gmail.com>
+
+allOf:
+  - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+  compatible:
+    enum:
+      - ti,davinci-i2c
+      - ti,keystone-i2c
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  power-domains:
+    maxItems: 1
+
+  ti,has-pfunc:
+    description:
+      Indicates that the SoC supports PFUNC registers, allowing I2C pins 
+      to function as GPIOs for manual toggling.
+    type: boolean
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c@1c22000 {
+        compatible = "ti,davinci-i2c";
+        reg = <0x01c22000 0x1000>;
+        clocks = <&i2c_clk>;
+        clock-frequency = <100000>;
+        interrupts = <15>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        sensor@48 {
+            compatible = "national,lm75";
+            reg = <0x48>;
+        };
+    };
-- 
2.43.0