[PATCH v2] drm/panel/panel-edp: Add CSOT MPP36 T9 eDP panel

[Adam Szyma]

From: Adam Szyma <adamszyma@xxxxx>
To: neil.armstrong@xxxxxxxxxx, dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx, Andrzej Hajda 
<andrzej.hajda@xxxxxxxxx>, Robert Foss <rfoss@xxxxxxxxxx>, Laurent 
Pinchart <Laurent.pinchart@xxxxxxxxxxxxxxxx>, Jonas Karlman 
<jonas@xxxxxxxxx>, Jernej Skrabec <jernej.skrabec@xxxxxxxxx>
Subject: [PATCH v2] drm/panel/panel-edp: Add CSOT MPP36 T9 eDP panel
In-Reply-To: <bc921525-1577-424c-a4f7-a0436f8a0ca1@xxxxxxxxxx>
References: <20260429145251.8445-1-adamszyma@xxxxx> 
<bc921525-1577-424c-a4f7-a0436f8a0ca1@xxxxxxxxxx>
MIME-Version: 1.0
Content-Type: text/plain


Add support for the CSOT MPP36 T9 eDP panel (manufacturer ID: CSW,
product ID: 0x143d) used in the Dell Inspiron 14 Plus 5441 laptop.

Without this entry the kernel logs:
  panel-simple-dp-aux: Unknown panel CSW 0x143d, using conservative timings

and brightness control is non-functional on affected devices.

Signed-off-by: Adam Szyma <adamszyma@xxxxx>
---
 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/panel-edp.c
index f3cdaea89..0d0072f29 100644
--- a/drivers/gpu/drm/panel/panel-edp.c
+++ b/drivers/gpu/drm/panel/panel-edp.c
@@ -2073,6 +2073,7 @@ static const struct edp_panel_entry edp_panels[] = {
     EDP_PANEL_ENTRY('C', 'S', 'W', 0x1103, &delay_200_500_e80_d50, 
"MNB601LS1-3"),
     EDP_PANEL_ENTRY('C', 'S', 'W', 0x1104, &delay_200_500_e50_d100, 
"MNB601LS1-4"),
     EDP_PANEL_ENTRY('C', 'S', 'W', 0x110a, &delay_200_500_e50, 
"PNB601LS1-2"),
+    EDP_PANEL_ENTRY('C', 'S', 'W', 0x143d, &delay_200_500_e50, "MPP36 
CSOT T9"),
     EDP_PANEL_ENTRY('C', 'S', 'W', 0x143f, &delay_200_500_e50, 
"MNE007QS3-6"),
     EDP_PANEL_ENTRY('C', 'S', 'W', 0x1448, &delay_200_500_e50, 
"MNE007QS3-7"),
     EDP_PANEL_ENTRY('C', 'S', 'W', 0x144b, &delay_200_500_e80, 
"MNE001BS1-4"),
--
2.53.0


W dniu 30.04.2026 o 11:45, Neil Armstrong pisze:
> On 4/29/26 16:52, Adam Szyma wrote:
> > Add support for the CSOT MPP36 T9 eDP panel (manufacturer ID: CSW,
> > product ID: 0x143d) used in the Dell Inspiron 14 Plus 5441 laptop.
> >
> > Without this entry the kernel logs:
> >    panel-simple-dp-aux: Unknown panel CSW 0x143d, using conservative 
> > timings
> >
> > and brightness control is non-functional on affected devices.
> >
> > Tested-by: Adam Szyma <adamszyma@xxxxx>
>
> I think it's assumed you tested the patch, so drop this.
>
> Neil
>
> > Signed-off-by: Adam Szyma <adamszyma@xxxxx>
> > ---
> >   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/panel-edp.c
> > index f3cdaea89..0d0072f29 100644
> > --- a/drivers/gpu/drm/panel/panel-edp.c
> > +++ b/drivers/gpu/drm/panel/panel-edp.c
> > @@ -2073,6 +2073,7 @@ static const struct edp_panel_entry 
> > edp_panels[] = {
> >       EDP_PANEL_ENTRY('C', 'S', 'W', 0x1103, &delay_200_500_e80_d50, 
> > "MNB601LS1-3"),
> >       EDP_PANEL_ENTRY('C', 'S', 'W', 0x1104, &delay_200_500_e50_d100, 
> > "MNB601LS1-4"),
> >       EDP_PANEL_ENTRY('C', 'S', 'W', 0x110a, &delay_200_500_e50, 
> > "PNB601LS1-2"),
> > +    EDP_PANEL_ENTRY('C', 'S', 'W', 0x143d, &delay_200_500_e50, 
> > "MPP36 CSOT T9"),
> >       EDP_PANEL_ENTRY('C', 'S', 'W', 0x143f, &delay_200_500_e50, 
> > "MNE007QS3-6"),
> >       EDP_PANEL_ENTRY('C', 'S', 'W', 0x1448, &delay_200_500_e50, 
> > "MNE007QS3-7"),
> >       EDP_PANEL_ENTRY('C', 'S', 'W', 0x144b, &delay_200_500_e80, 
> > "MNE001BS1-4"),