[7/8] dt-bindings: clk: Add KUnit clk_parent_data test

Commit Message

Stephen Boyd March 2, 2023, 1:38 a.m. UTC

Describe a binding for a device that provides and consumes clks in DT so
that a KUnit test can register clks based on the device node and test
clk_hw_register() with clk_parent_data.

Cc: Rob Herring <[e-mail]>
Cc: Krzysztof Kozlowski <[e-mail]>
Cc: Brendan Higgins <[e-mail]>
Cc: David Gow <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>
---
 .../clock/linux,clk-kunit-parent-data.yaml    | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/linux,clk-kunit-parent-data.yaml

Patch

diff --git a/Documentation/devicetree/bindings/clock/linux,clk-kunit-parent-data.yaml b/Documentation/devicetree/bindings/clock/linux,clk-kunit-parent-data.yaml
new file mode 100644
index 000000000000..29609e07c115
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/linux,clk-kunit-parent-data.yaml
@@ -0,0 +1,47 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/linux,clk-kunit-parent-data.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: KUnit clk provider for clk_parent_data unit tests
+
+maintainers:
+  - Stephen Boyd <[e-mail]>
+
+description: |
+  A clk provider to test the struct clk_parent_data implementation in the Linux
+  kernel.
+
+properties:
+  compatible:
+    const: linux,clk-kunit-parent-data
+
+  clocks:
+    items:
+      - description: Fixed parent
+      - description: 50 MHz fixed parent
+
+  clock-names:
+    items:
+      - const: parent_fwname
+      - const: "50"
+
+  "#clock-cells":
+    const: 1
+
+required:
+  - compatible
+  - "#clock-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    clock-controller {
+      compatible = "linux,clk-kunit-parent-data";
+      #clock-cells = <1>;
+      clocks = <&fixed_parent>, <&fixed_50MHz>;
+      clock-names = "parent_fwname", "50";
+    };
+...