linux-kernel - Re: [PATCH v3] pwm: mediatek: fix up PWM4 and PWM5 malfunction on MT7623

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Date:   Wed, 28 Mar 2018 00:30:48 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Sean Wang <sean.wang@...iatek.com>
Cc:     matthias.bgg@...il.com, linux-pwm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org, Zhi Mao <zhi.mao@...iatek.com>,
        John Crispin <john@...ozen.org>
Subject: Re: [PATCH v3] pwm: mediatek: fix up PWM4 and PWM5 malfunction on
 MT7623

On Sat, Mar 03, 2018 at 06:34:50AM +0800, Sean Wang wrote:
> On Fri, 2018-03-02 at 11:57 +0100, Thierry Reding wrote:
> > On Thu, Mar 01, 2018 at 04:19:12PM +0800, sean.wang@...iatek.com wrote:
> > > From: Sean Wang <sean.wang@...iatek.com>
> > > 
> > > Since the offset for both registers, PWMDWIDTH and PWMTHRES, used to
> > > control PWM4 or PWM5 are distinct from the other PWMs, whose wrong
> > > programming on PWM hardware causes waveform cannot be output as expected.
> > > Thus, the patch adds the extra condition for fixing up the weird case to
> > > let PWM4 or PWM5 able to work on MT7623.
> > > 
> > > v1 -> v2: use pwm45_fixup naming instead of pwm45_quirk
> > > v2 -> v3: add more tags for Reviewed-by, Fixes, and Cc stable
> > > 
> > > Cc: stable@...r.kernel.org
> > > Fixes: caf065f8fd58 ("pwm: Add MediaTek PWM support")
> > > Signed-off-by: Sean Wang <sean.wang@...iatek.com>
> > > Reviewed-by: Matthias Brugger <matthias.bgg@...il.com>
> > > Cc: Zhi Mao <zhi.mao@...iatek.com>
> > > Cc: John Crispin <john@...ozen.org>
> > > Cc: Matthias Brugger <matthias.bgg@...il.com>
> > > ---
> > >  drivers/pwm/pwm-mediatek.c | 24 +++++++++++++++++++++---
> > >  1 file changed, 21 insertions(+), 3 deletions(-)

Applied, thanks.

Thierry

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