dt-bindings: pwm: allwinner: Add H6 PWM description
authorJernej Skrabec <jernej.skrabec@siol.net>
Tue, 19 Nov 2019 17:53:12 +0000 (18:53 +0100)
committerMaxime Ripard <maxime@cerno.tech>
Wed, 11 Dec 2019 09:19:10 +0000 (10:19 +0100)
H6 PWM block is basically the same as A20 PWM, except that it also has
bus clock and reset line which needs to be handled accordingly.

Expand Allwinner PWM binding with H6 PWM specifics.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Documentation/devicetree/bindings/pwm/allwinner,sun4i-a10-pwm.yaml

index 0ac52f83a58cce4f222f20a266fc2d4528416284..fab89f052450e6f37df05aa64aff304e520f7caa 100644 (file)
@@ -30,13 +30,51 @@ properties:
       - items:
           - const: allwinner,sun50i-h5-pwm
           - const: allwinner,sun5i-a13-pwm
+      - const: allwinner,sun50i-h6-pwm
 
   reg:
     maxItems: 1
 
   clocks:
+    minItems: 1
+    maxItems: 2
+    items:
+      - description: Module Clock
+      - description: Bus Clock
+
+  # Even though it only applies to subschemas under the conditionals,
+  # not listing them here will trigger a warning because of the
+  # additionalsProperties set to false.
+  clock-names: true
+
+  resets:
     maxItems: 1
 
+if:
+  properties:
+    compatible:
+      contains:
+        const: allwinner,sun50i-h6-pwm
+
+then:
+  properties:
+    clocks:
+      maxItems: 2
+
+    clock-names:
+      items:
+        - const: mod
+        - const: bus
+
+  required:
+    - clock-names
+    - resets
+
+else:
+  properties:
+    clocks:
+      maxItems: 1
+
 required:
   - "#pwm-cells"
   - compatible
@@ -54,4 +92,17 @@ examples:
         #pwm-cells = <3>;
     };
 
+  - |
+    #include <dt-bindings/clock/sun50i-h6-ccu.h>
+    #include <dt-bindings/reset/sun50i-h6-ccu.h>
+
+    pwm@300a000 {
+      compatible = "allwinner,sun50i-h6-pwm";
+      reg = <0x0300a000 0x400>;
+      clocks = <&osc24M>, <&ccu CLK_BUS_PWM>;
+      clock-names = "mod", "bus";
+      resets = <&ccu RST_BUS_PWM>;
+      #pwm-cells = <3>;
+    };
+
 ...