Re: [PATCH] drm/panel-edp: Add BOE NV140FHD-N43 panel

[Jun Yan]

Hi,

> Hi,
> 
> On Sun, Oct 11, 2026 at 9:44=E2=80=AFAM Jun Yan <jerrysteve1101@xxxxxxxxx> =
> wrote:
> >
> > Add the BOE NV140FHD-N43 14.0" 1920x1080 eDP panel found in the
> > Sunniwell Z96A.
> >
> > raw EDID:
> >
> > 00 ff ff ff ff ff ff 00 09 e5 f4 03 00 00 00 00
> > 13 1c 01 04 a5 1f 11 78 02 3f 62 94 5e 56 94 28
> > 21 4f 58 00 00 00 01 01 01 01 01 01 01 01 01 01
> > 01 01 01 01 01 01 c8 36 80 cc 70 38 14 40 30 20
> > 36 00 35 ae 10 00 00 1a 86 24 80 cc 70 38 14 40
> > 64 64 44 05 35 ad 10 00 00 1a 00 00 00 fe 00 53
> > 54 41 52 52 59 0a 20 20 20 20 20 20 00 00 00 fe
> > 00 4e 56 31 34 30 46 48 44 2d 4e 34 33 0a 00 97
> >
> > Signed-off-by: Jun Yan <jerrysteve1101@xxxxxxxxx>
> > ---
> >  drivers/gpu/drm/panel/panel-edp.c | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/gpu/drm/panel/panel-edp.c b/drivers/gpu/drm/panel/pa=
> nel-edp.c
> > index ac815729aa83..ba981581f3b4 100644
> > --- a/drivers/gpu/drm/panel/panel-edp.c
> > +++ b/drivers/gpu/drm/panel/panel-edp.c
> > @@ -1972,6 +1972,7 @@ static const struct edp_panel_entry edp_panels[] =
> =3D {
> >         EDP_PANEL_ENTRY('A', 'U', 'O', 0xd497, &delay_200_500_e50, "B120X=
> AN01.0"),
> >         EDP_PANEL_ENTRY('A', 'U', 'O', 0xf390, &delay_200_500_e50, "B140X=
> TN07.7"),
> >
> > +       EDP_PANEL_ENTRY('B', 'O', 'E', 0x03f4, &delay_200_500_e50, "NV140=
> FHD-N43"),
> >         EDP_PANEL_ENTRY('B', 'O', 'E', 0x0607, &delay_200_500_e200, "Unkn=
> own"),
> >         EDP_PANEL_ENTRY('B', 'O', 'E', 0x0608, &delay_200_500_e50, "NT116=
> WHM-N11"),
> >         EDP_PANEL_ENTRY('B', 'O', 'E', 0x0609, &delay_200_500_e50_po2e200=
> , "NT116WHM-N21 V4.1"),
> 
> Things look pretty reasonable, but before landing I'd love a little
> more background about this panel and where your timings come from. Do
> you actually have a datasheet here, or are the timings a guess based
> on nearby panels? This panel is also curious in a few other ways:
> 

Thanks for your review.

Regarding the NV140FHD-N43 panel: I could not find its dedicated datasheet.
Instead, I referenced the similar NV140FHM-N43 panel [0], which shares the same
resolution but is 6-bit.

As I understand it, per section 8.0 POWER SEQUENCE:

- hpd_absent maps to T3 (200ms)
- unprepare maps to T10 (500ms)
- enable maps to T17 (20ms).

[0] https://raw.githubusercontent.com/yjun123/e-waste/master/sunniwell-z96a/datasheet/NV140FHM-N43_GZ.pdf

Since delay_200_500_e20 is not defined, I'd avoid adding a new delay entry.
Reusing delay_200_500_e50 is acceptable and works fine on hardware.

> 1. ID (0x03f4) is much lower than other panels.
> 
> 2. The EDID contains the string "STARRY", which is weird for a BOE panel.
> 

These two points are indeed strange and I have no good explanation for them. 
That said, I found a third‑party EDID for this same panel [1].

It contains identical information to the EDID I extracted from the panel, so
this is not an isolated case.

[1] https://github.com/linuxhw/EDID/blob/9c0c1bffc9c0f1cb2044115149a5ecb1652803f8/Digital/BOE/BOE03F4/C26FE7F0F22E

> None of that is necessarily blocking, but I wanted to get a little
> more info. Thanks!
> 
> -Doug