linux-kernel - Re: [PATCH] drm/panel: boe-tv101wum-nl6: Fine tune Himax83102-j02 panel HFP and HBP

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Message-ID: <CAD=FV=UP9NxfmT8rqLd-HUq8QwJXa5xO7UbrgYHLw4vOKZO7hA@mail.gmail.com>
Date: Mon, 4 Mar 2024 08:51:06 -0800
From: Doug Anderson <dianders@...omium.org>
To: Cong Yang <yangcong5@...qin.corp-partner.google.com>
Cc: sam@...nborg.org, neil.armstrong@...aro.org, daniel@...ll.ch, 
	hsinyi@...omium.org, swboyd@...omium.org, airlied@...il.com, 
	dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/panel: boe-tv101wum-nl6: Fine tune Himax83102-j02
 panel HFP and HBP

Hi,

On Thu, Feb 29, 2024 at 10:11 PM Cong Yang
<yangcong5@...qin.corp-partner.google.com> wrote:
>
> The current measured frame rate is 59.95Hz, which does not meet the
> requirements of touch-stylus and stylus cannot work normally. After
> adjustment, the actual measurement is 60.001Hz. Now this panel looks
> like it's only used by me on the MTK platform, so let's change this
> set of parameters.
>
> Fixes: cea7008190ad ("drm/panel: Fine tune Himax83102-j02 panel HFP and HBP")

Your "Fixes:" tag is not quite right. It needs to have the _exact_
subject of the old commit message, AKA:

Fixes: cea7008190ad ("drm/panel: boe-tv101wum-nl6: Fine tune
Himax83102-j02 panel HFP and HBP")

> Signed-off-by: Cong Yang <yangcong5@...qin.corp-partner.google.com>
> ---
>  drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)

A little odd that the patch you're fixing claimed that it caused the
measured rate to be 60.01Hz and here you're saying that it ended up
being 59.95Hz. I guess there was a measurement error when the previous
patch was posted?

In any case, the argument still holds that this is a panel that still
appears to be only used by your board, so small tweaks to the numbers
here seem OK.

Landed to "drm-misc-fixes" after:
* Adding "(again)" to the end of the subject to make it distinct from
the previous patch description
* Fixing your Fixes tag

9dfc46c87cdc drm/panel: boe-tv101wum-nl6: Fine tune Himax83102-j02
panel HFP and HBP (again)


-Doug