[PATCH v4 1/2] dt-bindings: pwm: dwc: add reset optional

[dongxuyang]

From: Xuyang Dong <dongxuyang@xxxxxxxxxxxxxxxxxx>

The DesignWare PWM includes separate reset signals dedicated to each clock
domain:
The presetn signal resets logic in pclk domain.
The timer_N_resetn signal resets logic in the timer_N_clk domain.
The resets are active-low.

Signed-off-by: Xuyang Dong <dongxuyang@xxxxxxxxxxxxxxxxxx>
---
 .../devicetree/bindings/pwm/snps,dw-apb-timers-pwm2.yaml       | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/pwm/snps,dw-apb-timers-pwm2.yaml b/Documentation/devicetree/bindings/pwm/snps,dw-apb-timers-pwm2.yaml
index 7523a89a1773..a8bbad0360f8 100644
--- a/Documentation/devicetree/bindings/pwm/snps,dw-apb-timers-pwm2.yaml
+++ b/Documentation/devicetree/bindings/pwm/snps,dw-apb-timers-pwm2.yaml
@@ -43,6 +43,9 @@ properties:
       - const: bus
       - const: timer
 
+  resets:
+    maxItems: 2
+
   snps,pwm-number:
     $ref: /schemas/types.yaml#/definitions/uint32
     description: The number of PWM channels configured for this instance
-- 
2.34.1