[PATCH V2 4/6] dt-bindings: pwm: sprd: Convert to YAML

[Wenhua Lin]

Convert Spreadtrum PWM controller bindings to DT schema.

Signed-off-by: Wenhua Lin <Wenhua.Lin@xxxxxxxxxx>
---
 .../devicetree/bindings/pwm/pwm-sprd.txt      | 40 --------
 .../devicetree/bindings/pwm/pwm-sprd.yaml     | 93 +++++++++++++++++++
 2 files changed, 93 insertions(+), 40 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/pwm/pwm-sprd.txt
 create mode 100644 Documentation/devicetree/bindings/pwm/pwm-sprd.yaml

diff --git a/Documentation/devicetree/bindings/pwm/pwm-sprd.txt b/Documentation/devicetree/bindings/pwm/pwm-sprd.txt
deleted file mode 100644
index 87b206fd0618..000000000000
--- a/Documentation/devicetree/bindings/pwm/pwm-sprd.txt
+++ /dev/null
@@ -1,40 +0,0 @@
-Spreadtrum PWM controller
-
-Spreadtrum SoCs PWM controller provides 4 PWM channels.
-
-Required properties:
-- compatible : Should be "sprd,ums512-pwm".
-- reg: Physical base address and length of the controller's registers.
-- clocks: The phandle and specifier referencing the controller's clocks.
-- clock-names: Should contain following entries:
-  "pwmn": used to derive the functional clock for PWM channel n (n range: 0 ~ 3).
-  "enablen": for PWM channel n enable clock (n range: 0 ~ 3).
-- #pwm-cells: Should be 2. See pwm.yaml in this directory for a description of
-  the cells format.
-
-Optional properties:
-- assigned-clocks: Reference to the PWM clock entries.
-- assigned-clock-parents: The phandle of the parent clock of PWM clock.
-
-Example:
-	pwms: pwm@32260000 {
-		compatible = "sprd,ums512-pwm";
-		reg = <0 0x32260000 0 0x10000>;
-		clock-names = "pwm0", "enable0",
-			"pwm1", "enable1",
-			"pwm2", "enable2",
-			"pwm3", "enable3";
-		clocks = <&aon_clk CLK_PWM0>, <&aonapb_gate CLK_PWM0_EB>,
-		       <&aon_clk CLK_PWM1>, <&aonapb_gate CLK_PWM1_EB>,
-		       <&aon_clk CLK_PWM2>, <&aonapb_gate CLK_PWM2_EB>,
-		       <&aon_clk CLK_PWM3>, <&aonapb_gate CLK_PWM3_EB>;
-		assigned-clocks = <&aon_clk CLK_PWM0>,
-			<&aon_clk CLK_PWM1>,
-			<&aon_clk CLK_PWM2>,
-			<&aon_clk CLK_PWM3>;
-		assigned-clock-parents = <&ext_26m>,
-			<&ext_26m>,
-			<&ext_26m>,
-			<&ext_26m>;
-		#pwm-cells = <2>;
-	};
diff --git a/Documentation/devicetree/bindings/pwm/pwm-sprd.yaml b/Documentation/devicetree/bindings/pwm/pwm-sprd.yaml
new file mode 100644
index 000000000000..81c5fd688c3c
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/pwm-sprd.yaml
@@ -0,0 +1,93 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2023 Unisoc Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/pwm-sprd.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Spreadtrum PWM controller
+
+maintainers:
+  - Orson Zhai <orsonzhai@xxxxxxxxx>
+  - Baolin Wang <baolin.wang7@xxxxxxxxx>
+  - Chunyan Zhang <zhang.lyra@xxxxxxxxx>
+
+description: |
+  Spreadtrum SoCs PWM controller provides 4 PWM channels.
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - sprd,ums512-pwm
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    minItems: 8
+    maxItems: 8
+
+  clock-names:
+    items:
+      - const: pwm0
+      - const: enable0
+      - const: pwm1
+      - const: enable1
+      - const: pwm2
+      - const: enable2
+      - const: pwm3
+      - const: enable3
+    description: |
+      Should contain following entries:
+      "pwmn": used to derive the functional clock for PWM channel n (n range: 0 ~ 3).
+      "enablen": for PWM channel n enable clock (n range: 0 ~ 3).
+
+  assigned-clocks:
+    minItems: 4
+    maxItems: 4
+
+  assigned-clock-parents:
+    minItems: 4
+    maxItems: 4
+
+  "#pwm-cells":
+    const: 2
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/sprd,ums512-clk.h>
+    pwms: pwm@32260000 {
+        compatible = "sprd,ums512-pwm";
+        reg = <0x32260000 0x10000>;
+        clock-names = "pwm0", "enable0",
+                      "pwm1", "enable1",
+                      "pwm2", "enable2",
+                      "pwm3", "enable3";
+        clocks = <&aon_clk CLK_PWM0>, <&aonapb_gate CLK_PWM0_EB>,
+                 <&aon_clk CLK_PWM1>, <&aonapb_gate CLK_PWM1_EB>,
+                 <&aon_clk CLK_PWM2>, <&aonapb_gate CLK_PWM2_EB>,
+                 <&aon_clk CLK_PWM3>, <&aonapb_gate CLK_PWM3_EB>;
+        assigned-clocks = <&aon_clk CLK_PWM0>,
+                          <&aon_clk CLK_PWM1>,
+                          <&aon_clk CLK_PWM2>,
+                          <&aon_clk CLK_PWM3>;
+        assigned-clock-parents = <&ext_26m>,
+                                 <&ext_26m>,
+                                 <&ext_26m>,
+                                 <&ext_26m>;
+        #pwm-cells = <2>;
+    };
+
+...
-- 
2.17.1