linux-kernel - Re: [PATCH v1 3/3] drm/panel-edp: Add BOE NV140WUM-N64

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Message-ID: <CAD=FV=Xd_xL=PYvVNqQWFZGmqN+Q=SvvaBTfbv9k+fDb8QwUtQ@mail.gmail.com>
Date: Tue, 29 Jul 2025 08:49:58 -0700
From: Doug Anderson <dianders@...omium.org>
To: Aleksandrs Vinarskis <alex.vinarskis@...il.com>
Cc: dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Neil Armstrong <neil.armstrong@...aro.org>, 
	Jessica Zhang <jessica.zhang@....qualcomm.com>, David Airlie <airlied@...il.com>, 
	Simona Vetter <simona@...ll.ch>, Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
	Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>
Subject: Re: [PATCH v1 3/3] drm/panel-edp: Add BOE NV140WUM-N64

Hi,

On Sun, Jul 27, 2025 at 9:58 AM Aleksandrs Vinarskis
<alex.vinarskis@...il.com> wrote:
>
> Timings taken from NV140WUM-N41. It is found in some arm64 laptops,
> eg. Asus Zenbook A14 UX3407QA.
>
> The raw edid of the panel is:
> 00 ff ff ff ff ff ff 00 09 e5 f6 0c 00 00 00 00
> 10 22 01 04 a5 1e 13 78 07 8e 95 a6 52 4c 9d 26
> 0f 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
> 01 01 01 01 01 01 5d 30 80 a0 70 b0 28 40 30 20
> 36 00 2e bc 10 00 00 1a 00 00 00 fd 00 28 3c 4a
> 4a 0f 01 0a 20 20 20 20 20 20 00 00 00 fe 00 3d
> 4c 33 30 20 20 20 20 20 20 20 20 ff 00 00 00 fc
> 00 4e 56 31 34 30 57 55 4d 2d 4e 36 34 0a 01 f8
>
> 70 20 79 02 00 21 00 1d c8 0b 5d 07 80 07 b0 04
> 88 66 ea 51 cc 74 9d 66 52 0f 02 35 54 40 5e 40
> 5e 00 44 12 78 22 00 14 7f 5c 02 85 7f 07 9f 00
> 2f 00 1f 00 af 04 27 00 02 00 05 00 2b 00 0c 27
> 00 28 3b 00 00 27 00 28 2f 00 00 2e 00 06 00 44
> 40 5e 40 5e 81 00 1e 72 1a 00 00 03 71 28 3c 00
> 00 60 ff 60 ff 3c 00 00 00 00 e3 05 04 00 e6 06
> 01 01 60 60 ff 00 00 00 00 00 00 00 00 00 de 90
>
> Signed-off-by: Aleksandrs Vinarskis <alex.vinarskis@...il.com>
> ---
>  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 9a56e208cbdd..b334926e96ed 100644
> --- a/drivers/gpu/drm/panel/panel-edp.c
> +++ b/drivers/gpu/drm/panel/panel-edp.c
> @@ -1947,6 +1947,7 @@ static const struct edp_panel_entry edp_panels[] = {
>         EDP_PANEL_ENTRY('B', 'O', 'E', 0x0c20, &delay_200_500_e80, "NT140FHM-N47"),
>         EDP_PANEL_ENTRY('B', 'O', 'E', 0x0c93, &delay_200_500_e200, "Unknown"),
>         EDP_PANEL_ENTRY('B', 'O', 'E', 0x0cb6, &delay_200_500_e200, "NT116WHM-N44"),
> +       EDP_PANEL_ENTRY('B', 'O', 'E', 0x0cf6, &delay_200_500_e50_p2e80, "NV140WUM-N64"),

Since this is a "guess" timing without any datasheet, I'd be more
comfortable picking the most conservative of the "cousin" timings. Can
you re-send with "delay_200_500_e200" instead?

-Doug