linux-kernel - [PATCH v9 1/4] dt-bindings: pwm: fix microchip corePWM's pwm-cells

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Date:   Fri, 19 Aug 2022 09:57:01 +0100
From:   Conor Dooley <conor.dooley@...rochip.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        "Rob Herring" <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
CC:     Daire McNamara <daire.mcnamara@...rochip.com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-pwm@...r.kernel.org>, <linux-riscv@...ts.infradead.org>,
        Conor Dooley <conor.dooley@...rochip.com>,
        Rob Herring <robh@...nel.org>
Subject: [PATCH v9 1/4] dt-bindings: pwm: fix microchip corePWM's pwm-cells

corePWM is capable of inverted operation but the binding requires
\#pwm-cells of 2. Expand the binding to support setting the polarity.

Fixes: df77f7735786 ("dt-bindings: pwm: add microchip corepwm binding")
Acked-by: Rob Herring <robh@...nel.org>
Acked-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
---
 Documentation/devicetree/bindings/pwm/microchip,corepwm.yaml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/pwm/microchip,corepwm.yaml b/Documentation/devicetree/bindings/pwm/microchip,corepwm.yaml
index a7fae1772a81..cd8e9a8907f8 100644
--- a/Documentation/devicetree/bindings/pwm/microchip,corepwm.yaml
+++ b/Documentation/devicetree/bindings/pwm/microchip,corepwm.yaml
@@ -30,7 +30,9 @@ properties:
     maxItems: 1
 
   "#pwm-cells":
-    const: 2
+    enum: [2, 3]
+    description:
+      The only flag supported by the controller is PWM_POLARITY_INVERTED.
 
   microchip,sync-update-mask:
     description: |
-- 
2.36.1