Re: Re: [PATCH v13 2/5] dt-bindings: pwm: dwc: Add eswin compatible

["Xuyang Dong" <dongxuyang@eswincomputing.com>]

> 
> Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
> - [Medium] Strict positional constraint on independent optional resets prevents using only the second reset ('timer').
> --
> 
> --- Patch [2]: [PATCH v13 2/5] dt-bindings: pwm: dwc: Add eswin compatible ---
> commit 5ab967af16c3b9f7a1cfa80ab82369dd37f82452
> Author: Xuyang Dong <dongxuyang@eswincomputing.com>
> 
> dt-bindings: pwm: dwc: Add eswin compatible
> 
> This commit adds the eswin,eic7700-pwm compatible string to the DesignWare 
> PWM IP binding. It constrains the resets property for this specific hardware 
> variant to exactly one combined reset line, and modifies the base reset 
> properties to require at least one reset.
> 
> > 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 1f9d72f9f3590..c65174e2045a7 100644
> > --- a/Documentation/devicetree/bindings/pwm/snps,dw-apb-timers-pwm2.yaml
> > +++ b/Documentation/devicetree/bindings/pwm/snps,dw-apb-timers-pwm2.yaml
> [ ... ]
> > @@ -44,11 +43,13 @@ properties:
> >        - const: timer
> >  
> >    resets:
> > +    minItems: 1
> >      items:
> >        - description: Interface bus (presetn) reset
> >        - description: PWM timer logic (timer_N_resetn) reset
> >  
> >    reset-names:
> > +    minItems: 1
> >      items:
> >        - const: bus
> >        - const: timer
> 
> [Severity: Medium]
> Does this strict positional constraint on reset-names prevent a generic
> device from using only the second reset?
> 
> The generic compatible allows up to two independent resets, meaning any
> combination should be valid. However, if a platform wires only the
> independent timer reset and provides a single element array with just
> "timer", the dt-schema validates it sequentially against the items list.
> Because it expects the first position to be "bus", providing just the
> timer reset will result in a validation error for an otherwise valid
> hardware configuration.
> 

Hi Sashiko,

Drop minItems of reset-names in the next version.

Best regards,
Xuyang Dong

> -- 
> Sashiko AI review · https://sashiko.dev/#/patchset/20260724084153.1473-1-dongxuyang@eswincomputing.com?part=2