[PATCH v2 2/6] pwm: pxa: add optional reset control

Guodong Xu guodong at riscstar.com
Sun Apr 27 23:50:52 PDT 2025


On Thu, Apr 24, 2025 at 3:30 PM Uwe Kleine-König <ukleinek at kernel.org> wrote:
>
> Hello,
>
> On Sun, Apr 20, 2025 at 03:02:47PM +0800, Guodong Xu wrote:
> > @@ -49,10 +50,10 @@ MODULE_DEVICE_TABLE(platform, pwm_id_table);
> >  #define PWMDCR_FD    (1 << 10)
> >
> >  struct pxa_pwm_chip {
> > -     struct device   *dev;
> > -
> > -     struct clk      *clk;
> > -     void __iomem    *mmio_base;
> > +     struct device           *dev;
> > +     struct clk              *clk;
> > +     void __iomem            *mmio_base;
> > +     struct reset_control    *reset;
>
> Changes like these are the reason I prefer to not align the member
> names. Luckily reset is a write only variable and you can just drop this
> hunk if you use a local variable for it in pwm_probe() below.
>

Thanks Uwe for the suggestion, I agree.
I will update it in v3 by dropping this hunk and using a local variable for
reset in pwm_probe() as you recommended.

BR,
Guodong

> >  };
> >
> >  static inline struct pxa_pwm_chip *to_pxa_pwm_chip(struct pwm_chip *chip)
> > @@ -179,6 +180,11 @@ static int pwm_probe(struct platform_device *pdev)
> >       if (IS_ERR(pc->clk))
> >               return PTR_ERR(pc->clk);
> >
> > +     pc->reset = devm_reset_control_get_optional_exclusive_deasserted(
> > +                     &pdev->dev, NULL);
> > +     if (IS_ERR(pc->reset))
> > +             return PTR_ERR(pc->reset);
> > +
> >       chip->ops = &pxa_pwm_ops;
> >
> >       if (IS_ENABLED(CONFIG_OF))
>
> Best regards
> Uwe



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