Re: [PATCH v3] pwm: mediatek: fix up PWM4 and PWM5 malfunction on MT7623
From: Thierry Reding
Date: Tue Mar 27 2018 - 18:30:57 EST
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@xxxxxxxxxxxx wrote:
> > > From: Sean Wang <sean.wang@xxxxxxxxxxxx>
> > >
> > > 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@xxxxxxxxxxxxxxx
> > > Fixes: caf065f8fd58 ("pwm: Add MediaTek PWM support")
> > > Signed-off-by: Sean Wang <sean.wang@xxxxxxxxxxxx>
> > > Reviewed-by: Matthias Brugger <matthias.bgg@xxxxxxxxx>
> > > Cc: Zhi Mao <zhi.mao@xxxxxxxxxxxx>
> > > Cc: John Crispin <john@xxxxxxxxxxx>
> > > Cc: Matthias Brugger <matthias.bgg@xxxxxxxxx>
> > > ---
> > > drivers/pwm/pwm-mediatek.c | 24 +++++++++++++++++++++---
> > > 1 file changed, 21 insertions(+), 3 deletions(-)
Applied, thanks.
Thierry
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