linux-kernel - Re: [PATCH] drm/ingenic: Fix pixclock rate for 24-bit serial panels

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Message-ID: <YKJsj+dDUshm/ZiT@phenom.ffwll.local>
Date:   Mon, 17 May 2021 15:15:59 +0200
From:   Daniel Vetter <daniel@...ll.ch>
To:     Paul Cercueil <paul@...pouillou.net>
Cc:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        Sam Ravnborg <sam@...nborg.org>, od@...c.me,
        linux-mips@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH] drm/ingenic: Fix pixclock rate for 24-bit serial panels

On Thu, May 13, 2021 at 01:29:30PM +0100, Paul Cercueil wrote:
> Hi,
> 
> Almost two months later,

Since you're committer it's expected that you go actively out to look for
review or trade with someone else who has some patches that need a quick
look. It will not happen automatically, this is on you.

Also generally after 2 weeks the patch is lost and you need to ping it.
-Daniel

> 
> 
> Le mar., mars 23 2021 at 14:40:08 +0000, Paul Cercueil
> <paul@...pouillou.net> a écrit :
> > When using a 24-bit panel on a 8-bit serial bus, the pixel clock
> > requested by the panel has to be multiplied by 3, since the subpixels
> > are shifted sequentially.
> > 
> > The code (in ingenic_drm_encoder_atomic_check) already computed
> > crtc_state->adjusted_mode->crtc_clock accordingly, but clk_set_rate()
> > used crtc_state->adjusted_mode->clock instead.
> > 
> > Fixes: 28ab7d35b6e0 ("drm/ingenic: Properly compute timings when using a
> > 3x8-bit panel")
> > Cc: stable@...r.kernel.org # v5.10
> > Signed-off-by: Paul Cercueil <paul@...pouillou.net>
> 
> Can I get an ACK for my patch?
> 
> Thanks!
> -Paul
> 
> > ---
> >  drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
> > b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
> > index d60e1eefc9d1..cba68bf52ec5 100644
> > --- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
> > +++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
> > @@ -342,7 +342,7 @@ static void ingenic_drm_crtc_atomic_flush(struct
> > drm_crtc *crtc,
> >  	if (priv->update_clk_rate) {
> >  		mutex_lock(&priv->clk_mutex);
> >  		clk_set_rate(priv->pix_clk,
> > -			     crtc_state->adjusted_mode.clock * 1000);
> > +			     crtc_state->adjusted_mode.crtc_clock * 1000);
> >  		priv->update_clk_rate = false;
> >  		mutex_unlock(&priv->clk_mutex);
> >  	}
> > --
> > 2.30.2
> > 
> 
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch