From 6a85afe4bc88fa9cbb0c1e76efd0d2588b2b572c Mon Sep 17 00:00:00 2001
From: Jernej Skrabec <jernej.skrabec@siol.net>
Date: Tue, 19 Nov 2019 18:53:12 +0100
Subject: [PATCH] dt-bindings: pwm: allwinner: Add H6 PWM description
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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>
---
 .../bindings/pwm/allwinner,sun4i-a10-pwm.yaml | 51 +++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/Documentation/devicetree/bindings/pwm/allwinner,sun4i-a10-pwm.yaml b/Documentation/devicetree/bindings/pwm/allwinner,sun4i-a10-pwm.yaml
index 0ac52f83a58c..fab89f052450 100644
--- a/Documentation/devicetree/bindings/pwm/allwinner,sun4i-a10-pwm.yaml
+++ b/Documentation/devicetree/bindings/pwm/allwinner,sun4i-a10-pwm.yaml
@@ -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>;
+    };
+
 ...