This adds a property "mediatek,num-pwms" in example so that we could
set the number of PWM channels via device tree.

Signed-off-by: Ryder Lee <ryder....@mediatek.com>
---
 Documentation/devicetree/bindings/pwm/pwm-mediatek.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt 
b/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt
index 991728c..f9e2d1f 100644
--- a/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt
+++ b/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt
@@ -20,6 +20,7 @@ Required properties:
  - pinctrl-names: Must contain a "default" entry.
  - pinctrl-0: One property must exist for each entry in pinctrl-names.
    See pinctrl/pinctrl-bindings.txt for details of the property values.
+ - mediatek,num-pwms: the number of PWM channels.
 
 Example:
        pwm0: pwm@11006000 {
@@ -37,4 +38,5 @@ Example:
                              "pwm3", "pwm4", "pwm5";
                pinctrl-names = "default";
                pinctrl-0 = <&pwm0_pins>;
+               mediatek,num-pwms = <5>;
        };
-- 
1.9.1

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