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

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Message-ID: <20260117005028.126361-1-marek.vasut+renesas@mailbox.org>
Date: Sat, 17 Jan 2026 01:49:48 +0100
From: Marek Vasut <marek.vasut+renesas@...lbox.org>
To: dri-devel@...ts.freedesktop.org
Cc: Marek Vasut <marek.vasut+renesas@...lbox.org>,
	Conor Dooley <conor+dt@...nel.org>,
	David Airlie <airlied@...il.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	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: [PATCH v3 1/2] drm/panel: simple: Add Waveshare 13.3" panel support

Add WaveShare 13.3inch 1920x1080 DSI Capacitive Touch Display support.

While the panel is described as DPI panel, it is part of a larger unit
in non-removable metal casing, so the actual internal configuration is
not known. The panel is attached to "waveshare,dsi2dpi" bridge via DT.
It is likely that internally, this panel is an LVDS panel, connected to
ICN6211 DSI-to-DPI bridge and then another unknown DPI-to-LVDS bridge.

Current device link is at https://www.waveshare.com/13.3inch-dsi-lcd.htm

Signed-off-by: Marek Vasut <marek.vasut+renesas@...lbox.org>
---
Cc: Conor Dooley <conor+dt@...nel.org>
Cc: David Airlie <airlied@...il.com>
Cc: Geert Uytterhoeven <geert+renesas@...der.be>
Cc: Jessica Zhang <jesszhan0024@...il.com>
Cc: Krzysztof Kozlowski <krzk+dt@...nel.org>
Cc: Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>
Cc: Magnus Damm <magnus.damm@...il.com>
Cc: Maxime Ripard <mripard@...nel.org>
Cc: Neil Armstrong <neil.armstrong@...aro.org>
Cc: Rob Herring <robh@...nel.org>
Cc: Sam Ravnborg <sam@...nborg.org>
Cc: Simona Vetter <simona@...ll.ch>
Cc: Thierry Reding <thierry.reding@...il.com>
Cc: Thomas Zimmermann <tzimmermann@...e.de>
Cc: devicetree@...r.kernel.org
Cc: dri-devel@...ts.freedesktop.org
Cc: linux-kernel@...r.kernel.org
Cc: linux-renesas-soc@...r.kernel.org
---
V3: New patch. Note that the compatible string is already part of
    Documentation/devicetree/bindings/display/panel/panel-simple.yaml
---
 drivers/gpu/drm/panel/panel-simple.c | 30 ++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 91ab280869bac..40a73c32b0b17 100644
--- 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,
+};
+
+static const struct panel_desc waveshare_133inch = {
+	.modes = &waveshare_133inch_mode,
+	.num_modes = 1,
+	.bpc = 8,
+	.size = {
+		.width = 293,
+		.height = 163,
+	},
+	.bus_format = MEDIA_BUS_FMT_RGB888_1X24,
+	.connector_type = DRM_MODE_CONNECTOR_DPI,
+	.bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_POSEDGE |
+		     DRM_BUS_FLAG_SYNC_SAMPLE_POSEDGE,
+};
+
 static const struct drm_display_mode winstar_wf35ltiacd_mode = {
 	.clock = 6410,
 	.hdisplay = 320,
@@ -5598,6 +5625,9 @@ static const struct of_device_id platform_of_match[] = {
 	}, {
 		.compatible = "vxt,vl050-8048nt-c01",
 		.data = &vl050_8048nt_c01,
+	}, {
+		.compatible = "waveshare,13.3inch-panel",
+		.data = &waveshare_133inch,
 	}, {
 		.compatible = "winstar,wf35ltiacd",
 		.data = &winstar_wf35ltiacd,
-- 
2.51.0