linux-kernel - Re: [PATCH v4 1/1] pwm: imx27: workaround of the pwm output bug when decrease the duty cycle

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Message-ID: <clldpp6n5qsbrfjwpkz6cwidmvf6ujezlg3qim5dtiahte4dch@2ccocj2y3lql>
Date: Tue, 10 Sep 2024 09:53:31 +0200
From: Uwe Kleine-König <u.kleine-koenig@...libre.com>
To: Marek Vasut <marex@...x.de>
Cc: Frank Li <Frank.Li@....com>, conor+dt@...nel.org, 
	devicetree@...r.kernel.org, festevam@...il.com, francesco@...cini.it, imx@...ts.linux.dev, 
	jun.li@....com, kernel@...gutronix.de, krzk+dt@...nel.org, 
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-pwm@...r.kernel.org, 
	p.zabel@...gutronix.de, pratikmanvar09@...il.com, robh@...nel.org, 
	s.hauer@...gutronix.de, shawnguo@...nel.org, xiaoning.wang@....com
Subject: Re: [PATCH v4 1/1] pwm: imx27: workaround of the pwm output bug when
 decrease the duty cycle

On Mon, Sep 09, 2024 at 10:19:59PM +0200, Marek Vasut wrote:
> On 9/9/24 9:38 PM, Frank Li wrote:
> 
> [...]
> 
> > +	 * Use __raw_writel() to minimize the interval between two writes to
> > +	 * the SAR register to increase the fastest pwm frequency supported.
> > +	 *
> > +	 * When the PWM period is longer than 2us(or <500KHz), this workaround
> > +	 * can solve this problem. No software workaround is available If PMW
> 
> PWM , typo

Also s/If/if/

Best regards
Uwe

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