linux-kernel - Re: [PATCH v2] drm/panel-edp: Add SDC ATNA45AF01

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Date:   Tue, 5 Dec 2023 10:05:06 -0800
From:   Doug Anderson <dianders@...omium.org>
To:     Abel Vesa <abel.vesa@...aro.org>
Cc:     Neil Armstrong <neil.armstrong@...aro.org>,
        Jessica Zhang <quic_jesszhan@...cinc.com>,
        Sam Ravnborg <sam@...nborg.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] drm/panel-edp: Add SDC ATNA45AF01

Hi,

On Mon, Dec 4, 2023 at 8:46 AM Doug Anderson <dianders@...omium.org> wrote:
>
> Hi,
>
> On Mon, Dec 4, 2023 at 12:54 AM Abel Vesa <abel.vesa@...aro.org> wrote:
> >
> > Add support for the SDC ATNA45AF01 panel.
> >
> > Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
> > ---
> > Changes in v2:
> > - moved the panel entry in the proper place, as suggested by Doug
> > - Link to v1: https://lore.kernel.org/r/20231201-x1e80100-drm-panel-edp-v1-1-ef9def711d8a@linaro.org
> > ---
> >  drivers/gpu/drm/panel/panel-edp.c | 2 ++
> >  1 file changed, 2 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/panel/panel-edp.c b/drivers/gpu/drm/panel/panel-edp.c
> > index 825fa2a0d8a5..78565c99b54d 100644
> > --- a/drivers/gpu/drm/panel/panel-edp.c
> > +++ b/drivers/gpu/drm/panel/panel-edp.c
> > @@ -1983,6 +1983,8 @@ static const struct edp_panel_entry edp_panels[] = {
> >         EDP_PANEL_ENTRY('K', 'D', 'C', 0x0809, &delay_200_500_e50, "KD116N2930A15"),
> >         EDP_PANEL_ENTRY('K', 'D', 'B', 0x1120, &delay_200_500_e80_d50, "116N29-30NK-C007"),
> >
> > +       EDP_PANEL_ENTRY('S', 'D', 'C', 0x416d, &delay_100_500_e200, "ATNA45AF01"),
> > +
>
> Looks fine to me now. I will note that e200 is pretty long and I
> wonder if you've got this because of a requirement of T3+T4+T5+T6+T8
> being more than 200ms. If so, I wonder if Pin-yen's patch [1] would
> help you optimize things?
>
> In any case, this looks fine to me.
>
> Reviewed-by: Douglas Anderson <dianders@...omium.org>
>
> ...I'll wait a day in case you say this would be better atop Pin-yen's
> patch and want me to wait, but I also have no objections to landing
> this now and later optimizing the delays.
>
> [1] https://crrev.com/c/5052150

Pushed to drm-misc-next.

8ebb1fc2e69a drm/panel-edp: Add SDC ATNA45AF01

If you can optimize this after Pin-yen's patch, feel free to send another patch.

-Doug