dt-bindings: clocks: Convert Allwinner legacy clocks to schemas

The Allwinner SoCs have a legacy set of bindings (and a framework to
support it in Linux) for their clock controllers.

Now that we have the DT validation in place, let's split into separate file
and convert the device tree bindings for those clocks to schemas, and mark
them all as deprecated.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Rob Herring <robh@kernel.org>

1 files changed, 80 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/clock/allwinner,sun4i-a10-mod0-clk.yaml b/Documentation/devicetree/bindings/clock/allwinner,sun4i-a10-mod0-clk.yaml
new file mode 100644
index 000000000000..3e2abe3e67c1
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/allwinner,sun4i-a10-mod0-clk.yaml
@@ -0,0 +1,80 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/allwinner,sun4i-a10-mod0-clk.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Allwinner A10 Module 0 Clock Device Tree Bindings
+
+maintainers:
+  - Chen-Yu Tsai <wens@csie.org>
+  - Maxime Ripard <mripard@kernel.org>
+
+deprecated: true
+
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - allwinner,sun4i-a10-mod0-clk
+          - allwinner,sun9i-a80-mod0-clk
+
+  # The PRCM on the A31 and A23 will have the reg property missing,
+  # since it's set at the upper level node, and will be validated by
+  # PRCM's schema. Make sure we only validate standalone nodes.
+  required:
+    - compatible
+    - reg
+
+properties:
+  "#clock-cells":
+    const: 0
+
+  compatible:
+    enum:
+      - allwinner,sun4i-a10-mod0-clk
+      - allwinner,sun9i-a80-mod0-clk
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    # On the A80, the PRCM mod0 clocks have 2 parents.
+    minItems: 2
+    maxItems: 3
+    description: >
+      The parent order must match the hardware programming order.
+
+  clock-output-names:
+    maxItems: 1
+
+required:
+  - "#clock-cells"
+  - compatible
+  - reg
+  - clocks
+  - clock-output-names
+
+additionalProperties: false
+
+examples:
+  - |
+    clk@1c20080 {
+        #clock-cells = <0>;
+        compatible = "allwinner,sun4i-a10-mod0-clk";
+        reg = <0x01c20080 0x4>;
+        clocks = <&osc24M>, <&pll6 1>, <&pll5 1>;
+        clock-output-names = "nand";
+    };
+
+  - |
+    clk@8001454 {
+        #clock-cells = <0>;
+        compatible = "allwinner,sun4i-a10-mod0-clk";
+        reg = <0x08001454 0x4>;
+        clocks = <&osc32k>, <&osc24M>;
+        clock-output-names = "r_ir";
+    };
+
+...