dt-bindings: clock: imx8m: Integrate duplicated i.MX 8M schemas

The clock controller schemas for i.MX 8M Mini, 8M Nano, 8M Plus and 8M
Quad are basically the same.  The only minor difference appears on 8M
Quad which needs one more clock.

There is no point to have four schemas for almost the same binding.  Any
fixes or changes would have to be duplicated four times.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>

1 files changed, 125 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/clock/imx8m-clock.yaml b/Documentation/devicetree/bindings/clock/imx8m-clock.yaml
new file mode 100644
index 000000000000..31e7cc9693c3
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/imx8m-clock.yaml
@@ -0,0 +1,125 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/imx8m-clock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP i.MX8M Family Clock Control Module Binding
+
+maintainers:
+  - Anson Huang <Anson.Huang@nxp.com>
+
+description: |
+  NXP i.MX8M Mini/Nano/Plus/Quad clock control module is an integrated clock
+  controller, which generates and supplies to all modules.
+
+properties:
+  compatible:
+    enum:
+      - fsl,imx8mm-ccm
+      - fsl,imx8mn-ccm
+      - fsl,imx8mp-ccm
+      - fsl,imx8mq-ccm
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    minItems: 6
+    maxItems: 7
+
+  clock-names:
+    minItems: 6
+    maxItems: 7
+
+  '#clock-cells':
+    const: 1
+    description:
+      The clock consumer should specify the desired clock by having the clock
+      ID in its "clocks" phandle cell. See include/dt-bindings/clock/imx8m-clock.h
+      for the full list of i.MX8M clock IDs.
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#clock-cells'
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: fsl,imx8mq-ccm
+    then:
+      properties:
+        clocks:
+          minItems: 7
+          maxItems: 7
+          items:
+            - description: 32k osc
+            - description: 25m osc
+            - description: 27m osc
+            - description: ext1 clock input
+            - description: ext2 clock input
+            - description: ext3 clock input
+            - description: ext4 clock input
+        clock-names:
+          minItems: 7
+          maxItems: 7
+          items:
+            - const: ckil
+            - const: osc_25m
+            - const: osc_27m
+            - const: clk_ext1
+            - const: clk_ext2
+            - const: clk_ext3
+            - const: clk_ext4
+    else:
+      properties:
+        clocks:
+          items:
+            - description: 32k osc
+            - description: 24m osc
+            - description: ext1 clock input
+            - description: ext2 clock input
+            - description: ext3 clock input
+            - description: ext4 clock input
+
+        clock-names:
+          items:
+            - const: osc_32k
+            - const: osc_24m
+            - const: clk_ext1
+            - const: clk_ext2
+            - const: clk_ext3
+            - const: clk_ext4
+
+unevaluatedProperties: false
+
+examples:
+  # Clock Control Module node:
+  - |
+    clock-controller@30380000 {
+        compatible = "fsl,imx8mm-ccm";
+        reg = <0x30380000 0x10000>;
+        #clock-cells = <1>;
+        clocks = <&osc_32k>, <&osc_24m>, <&clk_ext1>, <&clk_ext2>,
+                 <&clk_ext3>, <&clk_ext4>;
+        clock-names = "osc_32k", "osc_24m", "clk_ext1", "clk_ext2",
+                      "clk_ext3", "clk_ext4";
+    };
+
+  - |
+    clock-controller@30390000 {
+        compatible = "fsl,imx8mq-ccm";
+        reg = <0x30380000 0x10000>;
+        #clock-cells = <1>;
+        clocks = <&ckil>, <&osc_25m>, <&osc_27m>, <&clk_ext1>,
+                 <&clk_ext2>, <&clk_ext3>, <&clk_ext4>;
+        clock-names = "ckil", "osc_25m", "osc_27m", "clk_ext1",
+                      "clk_ext2", "clk_ext3", "clk_ext4";
+    };
+
+...