Re: [PATCH v2 09/14] dt-bindings: pinctrl: realtek: Rename 'realtek,duty-cycle' to 'realtek,pulse-width-adjust'

[Krzysztof Kozlowski]

On Fri, Mar 06, 2026 at 03:52:39PM +0800, Yu-Chun Lin wrote:
> From: Tzuyi Chang <tychang@xxxxxxxxxxx>
> 
> Rename 'realtek,duty-cycle' to 'realtek,pulse-width-adjust'.
> 
> The previous name was misleading because this hardware block is not a PWM
> generator. It does not generate a signal with a specific frequency and
> duty ratio.
> 
> Instead, it provides a fixed nanosecond-level adjustment to the rising/
> falling edges of an existing signal.
> 
> Signed-off-by: Tzuyi Chang <tychang@xxxxxxxxxxx>
> Co-developed-by: Yu-Chun Lin <eleanor.lin@xxxxxxxxxxx>
> Signed-off-by: Yu-Chun Lin <eleanor.lin@xxxxxxxxxxx>
> ---
>  .../bindings/pinctrl/realtek,rtd1315e-pinctrl.yaml       | 9 ++++++---
>  .../bindings/pinctrl/realtek,rtd1319d-pinctrl.yaml       | 9 ++++++---
>  .../bindings/pinctrl/realtek,rtd1619b-pinctrl.yaml       | 9 ++++++---
>  3 files changed, 18 insertions(+), 9 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/realtek,rtd1315e-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/realtek,rtd1315e-pinctrl.yaml
> index 90bd49d87d2e..7b3888b2cea8 100644
> --- a/Documentation/devicetree/bindings/pinctrl/realtek,rtd1315e-pinctrl.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/realtek,rtd1315e-pinctrl.yaml
> @@ -133,10 +133,13 @@ patternProperties:
>          minimum: 0
>          maximum: 7
>  
> -      realtek,duty-cycle:
> +      realtek,pulse-width-adjust:

No, that's ABI break without explanation. "misleading" is not the
sufficient argument for breaking ABI.
You are stuck with the ABI you added back in 2023.

Best regards,
Krzysztof