From: Krzysztof Kozlowski <krzk@kernel.org>
To: Conor Dooley <conor@kernel.org>
Cc: dongxuyang@eswincomputing.com, ukleinek@kernel.org,
robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org,
ben-linux@fluff.org, ben.dooks@codethink.co.uk,
p.zabel@pengutronix.de, linux-pwm@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
ningyu@eswincomputing.com, linmin@eswincomputing.com,
xuxiang@eswincomputing.com, wangguosheng@eswincomputing.com,
pinkesh.vaghela@einfochips.com
Subject: Re: [PATCH v4 1/2] dt-bindings: pwm: dwc: add reset optional
Date: Thu, 16 Apr 2026 10:24:29 +0200 [thread overview]
Message-ID: <20260416-wandering-solemn-uakari-083ae7@quoll> (raw)
In-Reply-To: <20260415-reacquire-handstand-d1923af82c9d@spud>
On Wed, Apr 15, 2026 at 04:09:49PM +0100, Conor Dooley wrote:
> On Wed, Apr 15, 2026 at 05:50:20PM +0800, dongxuyang@eswincomputing.com wrote:
> > From: Xuyang Dong <dongxuyang@eswincomputing.com>
> >
> > 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@eswincomputing.com>
>
> This commit implies that your hardware differs from existing devices,
> I think you should add a device-specific compatible.
>
> > ---
> > .../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
And this should really be listed with description, because order is
fixed.
Best regards,
Krzysztof
next prev parent reply other threads:[~2026-04-16 8:24 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-15 9:49 [PATCH v4 0/2] Update designware pwm driver dongxuyang
2026-04-15 9:50 ` [PATCH v4 1/2] dt-bindings: pwm: dwc: add reset optional dongxuyang
2026-04-15 15:09 ` Conor Dooley
2026-04-16 8:24 ` Krzysztof Kozlowski [this message]
2026-04-16 9:38 ` Xuyang Dong
2026-04-16 15:29 ` Conor Dooley
2026-04-17 3:11 ` Xuyang Dong
2026-04-16 19:53 ` Uwe Kleine-König
2026-04-17 3:13 ` Xuyang Dong
2026-04-15 9:50 ` [PATCH v4 2/2] pwm: dwc: add of/platform support dongxuyang
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