[PATCH] dt-bindings: i2c: brcm,bcm2835-i2c: convert to YAML schema

* [PATCH] dt-bindings: i2c: brcm,bcm2835-i2c: convert to YAML schema
@ 2021-12-06 18:46 David Heidelberg
  2021-12-06 22:27 ` Florian Fainelli
  2021-12-09  8:56 ` Wolfram Sang
  0 siblings, 2 replies; 4+ messages in thread
From: David Heidelberg @ 2021-12-06 18:46 UTC (permalink / raw)
  To: Rob Herring, Florian Fainelli, Ray Jui, Scott Branden,
	bcm-kernel-feedback-list, Nicolas Saenz Julienne, Stephen Warren
  Cc: ~okias/devicetree, David Heidelberg, linux-i2c, devicetree,
	linux-rpi-kernel, linux-arm-kernel, linux-kernel

Switch the DT binding to a YAML schema to enable the DT validation.

Signed-off-by: David Heidelberg <david@ixit.cz>
---
 .../bindings/i2c/brcm,bcm2835-i2c.txt         | 22 --------
 .../bindings/i2c/brcm,bcm2835-i2c.yaml        | 54 +++++++++++++++++++
 2 files changed, 54 insertions(+), 22 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt
 create mode 100644 Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.yaml

diff --git a/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt b/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt
deleted file mode 100644
index a8a35df41951..000000000000
--- a/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt
+++ /dev/null
@@ -1,22 +0,0 @@
-Broadcom BCM2835 I2C controller
-
-Required properties:
-- compatible : Should be one of:
-	"brcm,bcm2711-i2c"
-	"brcm,bcm2835-i2c"
-- reg: Should contain register location and length.
-- interrupts: Should contain interrupt.
-- clocks : The clock feeding the I2C controller.
-
-Recommended properties:
-- clock-frequency : desired I2C bus clock frequency in Hz.
-
-Example:
-
-i2c@7e205000 {
-	compatible = "brcm,bcm2835-i2c";
-	reg = <0x7e205000 0x1000>;
-	interrupts = <2 21>;
-	clocks = <&clk_i2c>;
-	clock-frequency = <100000>;
-};
diff --git a/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.yaml b/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.yaml
new file mode 100644
index 000000000000..8256490a7af2
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.yaml
@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/brcm,bcm2835-i2c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom BCM2835 I2C controller
+
+maintainers:
+  - Stephen Warren <swarren@wwwdotorg.org>
+
+allOf:
+  - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - brcm,bcm2835-i2c
+      - items:
+          - const: brcm,bcm2711-i2c
+          - const: brcm,bcm2835-i2c
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clock-names:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-frequency: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i2c@7e205000 {
+        compatible = "brcm,bcm2835-i2c";
+        reg = <0x7e205000 0x1000>;
+        interrupts = <2 21>;
+        clocks = <&clk_i2c>;
+        clock-frequency = <100000>;
+    };
-- 
2.33.0


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