linux-kernel - [PATCH] drm/edp-panel: Add touchscreen panel used by Lenovo X13s

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Message-Id: <20250701-x13x-touchscreen-lookup-v1-1-a1277f119f92@riscstar.com>
Date: Tue, 01 Jul 2025 09:16:30 +0100
From: daniel@...cstar.com
To: Douglas Anderson <dianders@...omium.org>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Jessica Zhang <quic_jesszhan@...cinc.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 Daniel Thompson <daniel@...cstar.com>
Subject: [PATCH] drm/edp-panel: Add touchscreen panel used by Lenovo X13s

From: Daniel Thompson <daniel@...cstar.com>

After (checks watch) a little over two years I finally investigated the
boot warning on my Thinkpad X13s and it was caused by the conservative
timings warning in panel-edp.c . The X13s was sold with a variety of
different panel versions; I have the 300 nit multi-touch variant.

I have been unable to secure panel documentation so the I copied the
timings from NV133WUM-N63.

The raw EDID is:

00 ff ff ff ff ff ff 00 09 e5 84 0a 00 00 00 00
1e 1f 01 04 a5 1d 12 78 03 5c 70 a6 51 4c 9c 26
0e 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 74 3c 80 a0 70 b0 28 40 30 20
36 00 1e b3 10 00 00 1a 00 00 00 fd 00 28 3c 4b
4b 10 01 0a 20 20 20 20 20 20 00 00 00 fe 00 42
4f 45 20 48 46 0a 20 20 20 20 20 20 00 00 00 fe
00 4e 56 31 33 33 57 55 4d 2d 54 30 31 0a 00 51

Signed-off-by: Daniel Thompson <daniel@...cstar.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 90e8c154a9788ad40e2101fdf39cbd92f2e0773a..9144de974f1e4abdd1af12613238f6f28d98fc41 100644
--- a/drivers/gpu/drm/panel/panel-edp.c
+++ b/drivers/gpu/drm/panel/panel-edp.c
@@ -1935,6 +1935,7 @@ static const struct edp_panel_entry edp_panels[] = {
 	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a3e, &delay_200_500_e80, "NV116WHM-N49"),
 	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a5d, &delay_200_500_e50, "NV116WHM-N45"),
 	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ac5, &delay_200_500_e50, "NV116WHM-N4C"),
+	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0a84, &delay_200_500_e50, "NV133WUM-T01"),
 	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0ae8, &delay_200_500_e50_p2e80, "NV140WUM-N41"),
 	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b09, &delay_200_500_e50_po2e200, "NV140FHM-NZ"),
 	EDP_PANEL_ENTRY('B', 'O', 'E', 0x0b34, &delay_200_500_e80, "NV122WUM-N41"),

---
base-commit: d0b3b7b22dfa1f4b515fd3a295b3fd958f9e81af
change-id: 20250701-x13x-touchscreen-lookup-03ad81c3fc46

Best regards,
-- 
Daniel Thompson <daniel@...cstar.com>