linux-kernel - [PATCH] drm/panel-edp: Add panel used by T14s Gen6 Snapdragon (OLED)

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Message-Id: <20250320-wip-obbardc-qcom-t14s-oled-panel-v1-1-05bc4bdcd82a@linaro.org>
Date: Thu, 20 Mar 2025 12:47:09 +0000
From: Christopher Obbard <christopher.obbard@...aro.org>
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, 
 linux-arm-msm@...r.kernel.org, Johan Hovold <johan+linaro@...nel.org>, 
 Christopher Obbard <christopher.obbard@...aro.org>
Subject: [PATCH] drm/panel-edp: Add panel used by T14s Gen6 Snapdragon
 (OLED)

The Lenovo Thinkpad T14s Gen6 Snapdragon OLED model has a Samsung
panel. The kernel currently prints a warning due to not having the
correct timings.

This panel appears to work with the default conservative timings,
so add the OLED panel to the list of supported panels with default
timings.

The raw EDID is:

00 ff ff ff ff ff ff 00 4c 83 9f 41 00 00 00 00
00 21 01 04 b5 1e 13 78 02 0c f1 ae 52 3c b9 23
0c 50 54 00 00 00 01 01 01 01 01 01 01 01 01 01
01 01 01 01 01 01 ca fe 40 64 b0 08 18 70 20 08
88 00 2e bd 10 00 00 1b ca fe 40 64 b0 08 38 77
08 20 88 00 2e bd 10 00 00 1b 00 00 00 fe 00 53
44 43 20 20 20 20 20 20 20 20 20 20 00 00 00 fe
00 41 54 4e 41 34 30 59 4b 32 30 2d 30 20 01 cf
02 03 0f 00 e3 05 80 00 e6 06 05 01 74 60 07 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 b7

Signed-off-by: Christopher Obbard <christopher.obbard@...aro.org>
---
 drivers/gpu/drm/panel/panel-edp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-edp.c b/drivers/gpu/drm/panel/panel-edp.c
index 52028c8f8988d4b771bd2604256aea4cde4f4020..56eb57c8023fbbb5ba39f5fdbfa8e577400f751a 100644
--- a/drivers/gpu/drm/panel/panel-edp.c
+++ b/drivers/gpu/drm/panel/panel-edp.c
@@ -2008,6 +2008,8 @@ static const struct edp_panel_entry edp_panels[] = {
 	EDP_PANEL_ENTRY('L', 'G', 'D', 0x05f1, &delay_200_500_e200_d200, "Unknown"),
 	EDP_PANEL_ENTRY('L', 'G', 'D', 0x0778, &delay_200_500_e200_d200, "134WT1"),
 
+	EDP_PANEL_ENTRY('S', 'D', 'C', 0x419f, &delay_200_500_e200, "ATNA40YK20-0"),
+
 	EDP_PANEL_ENTRY('S', 'H', 'P', 0x1511, &delay_200_500_e50, "LQ140M1JW48"),
 	EDP_PANEL_ENTRY('S', 'H', 'P', 0x1523, &delay_80_500_e50, "LQ140M1JW46"),
 	EDP_PANEL_ENTRY('S', 'H', 'P', 0x153a, &delay_200_500_e50, "LQ140T1JH01"),

---
base-commit: 707bd8cceaac1af31d3eeeee166687bdde580fd3
change-id: 20250320-wip-obbardc-qcom-t14s-oled-panel-b74fed21d600

Best regards,
-- 
Christopher Obbard <christopher.obbard@...aro.org>