linux-kernel - Re: [PATCH] pwm: loongson: Fix LOONGSON_PWM_FREQ

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Message-ID: <1f0cad5f8fd36ea72e54d642f6866334a61b808e.camel@xry111.site>
Date: Wed, 20 Aug 2025 15:14:15 +0800
From: Xi Ruoyao <xry111@...111.site>
To: Uwe Kleine-König <ukleinek@...nel.org>, Binbin Zhou
	 <zhoubb.aaron@...il.com>
Cc: Binbin Zhou <zhoubinbin@...ngson.cn>, Juxin Gao <gaojuxin@...ngson.cn>, 
 Huacai Chen <chenhuacai@...nel.org>, Xuerui Wang <kernel@...0n.name>,
 linux-pwm@...r.kernel.org, 	loongarch@...ts.linux.dev,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pwm: loongson: Fix LOONGSON_PWM_FREQ_DEFAULT

On Wed, 2025-08-20 at 08:36 +0200, Uwe Kleine-König wrote:
> Hi Binbin,
> 
> On Mon, Aug 18, 2025 at 05:38:34PM +0800, Binbin Zhou wrote:
> > On Sun, Aug 17, 2025 at 6:59 PM Uwe Kleine-König <ukleinek@...nel.org> wrote:
> > > 
> > > Hello,
> > > 
> > > [adding Juxin Gao to Cc:]
> > > 
> > > On Sat, Aug 16, 2025 at 06:49:05PM +0800, Xi Ruoyao wrote:
> > > > Per the 7A1000 and 7A2000 user manual, the clock frequency of their
> > > > PWM controllers is 50 MHz, not 50 kHz.
> > > > 
> > > > Fixes: 2b62c89448dd ("pwm: Add Loongson PWM controller support")
> > 
> > I have confirmed once again that this was indeed my mistake. Thank you again!
> > 
> > Reviewed-by: Binbin Zhou <zhoubinbin@...ngson.cn>
> 
> Thanks for your confirmation. 
> 
> My gut feeling is that this isn't very urgent and taking this as merge
> window material for 6.18-rc1 is fine. I still applied it to
> https://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux.git pwm/fixes
> and will send it along if something more urgent pops up. Please tell me
> if you think I should bother Linus with it and get it into 6.17.

Just FYI: the issue was detected when I debugged a screen flickering
with a downstream backlight control driver.  As this backlight control
driver is not upstream yet anyway I don't see an emergency myself.


-- 
Xi Ruoyao <xry111@...111.site>