linux-kernel - Re: [PATCH v3 1/2] drm/panel: simple: Add Waveshare 13.3" panel support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <926a0b23-5159-4f4e-b278-b545ae281410@mailbox.org>
Date: Mon, 19 Jan 2026 20:08:04 +0100
From: Marek Vasut <marek.vasut@...lbox.org>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: dri-devel@...ts.freedesktop.org, Conor Dooley <conor+dt@...nel.org>,
 David Airlie <airlied@...il.com>, Jessica Zhang <jesszhan0024@...il.com>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Magnus Damm <magnus.damm@...il.com>, Maxime Ripard <mripard@...nel.org>,
 Neil Armstrong <neil.armstrong@...aro.org>, Rob Herring <robh@...nel.org>,
 Sam Ravnborg <sam@...nborg.org>, Simona Vetter <simona@...ll.ch>,
 Thierry Reding <thierry.reding@...il.com>,
 Thomas Zimmermann <tzimmermann@...e.de>, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org
Subject: Re: [PATCH v3 1/2] drm/panel: simple: Add Waveshare 13.3" panel
 support

On 1/19/26 4:56 PM, Geert Uytterhoeven wrote:

Hello Geert,

>> --- a/drivers/gpu/drm/panel/panel-simple.c
>> +++ b/drivers/gpu/drm/panel/panel-simple.c
>> @@ -4998,6 +4998,33 @@ static const struct panel_desc vl050_8048nt_c01 = {
>>          .bus_flags = DRM_BUS_FLAG_DE_HIGH | DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE,
>>   };
>>
>> +static const struct drm_display_mode waveshare_133inch_mode = {
>> +       .clock = 148500,
>> +       .hdisplay = 1920,
>> +       .hsync_start = 1920 + 88,
>> +       .hsync_end = 1920 + 88 + 44,
>> +       .htotal = 1920 + 88 + 44 + 148,
>> +       .vdisplay = 1080,
>> +       .vsync_start = 1080 + 4,
>> +       .vsync_end = 1080 + 4 + 5,
>> +       .vtotal = 1080 + 4 + 5 + 36,
>> +       .flags = DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_PHSYNC,
>> +};
> 
> That looks like the plain standard 60Hz Full HD mode.
> Is there really no other copy of that structure available in the kernel?
> 
> auo_t215hvn01_mode is almost the same, except for .clock and .flags.
> drivers/video/fbdev/core/modedb.c has the same mode, but in a different
> structure.

The panel-simple.c is full of similar-ish panel timings . The timings 
above are adapted from the waveshare DTO for this panel. What else would 
you suggest I do/use for this device ?