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

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

[Marek Vasut]

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@mailbox.org>
---
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: David Airlie <airlied@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Jessica Zhang <jesszhan0024@gmail.com>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: devicetree@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-renesas-soc@vger.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

[PATCH v3 2/2] arm64: dts: renesas: sparrow-hawk: Add overlay for WaveShare Display 13.3"

[Marek Vasut]

Add a DT overlay to bind the WaveShare 13.3inch 1920x1080 DSI Capacitive
Touch Display on the Retronix R-Car V4H Sparrow Hawk board.

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

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
---
DEPENDS:
- https://lore.kernel.org/linux-input/20260112234534.225954-1-marek.vasut+renesas@mailbox.org/
- https://lore.kernel.org/linux-devicetree/20260112234834.226128-1-marek.vasut+renesas@mailbox.org/
---
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: David Airlie <airlied@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Jessica Zhang <jesszhan0024@gmail.com>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: devicetree@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org
---
V2: No change
V3: Use compatible = "waveshare,13.3inch-panel" and drop timings
    and dimensions, those are part of panel-simple
---
 arch/arm64/boot/dts/renesas/Makefile          |  3 +
 ...r8a779g3-sparrow-hawk-ws-display-13in.dtso | 90 +++++++++++++++++++
 2 files changed, 93 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-ws-display-13in.dtso

diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index 1fab1b50f20e6..8a2d1baa69c77 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -120,6 +120,9 @@ dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g3-sparrow-hawk-rpi-display-2-5in.dtb
 dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g3-sparrow-hawk-rpi-display-2-7in.dtbo
 r8a779g3-sparrow-hawk-rpi-display-2-7in-dtbs := r8a779g3-sparrow-hawk.dtb r8a779g3-sparrow-hawk-rpi-display-2-7in.dtbo
 dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g3-sparrow-hawk-rpi-display-2-7in.dtb
+dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g3-sparrow-hawk-ws-display-13in.dtbo
+r8a779g3-sparrow-hawk-ws-display-13in-dtbs := r8a779g3-sparrow-hawk.dtb r8a779g3-sparrow-hawk-ws-display-13in.dtbo
+dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g3-sparrow-hawk-ws-display-13in.dtb
 
 dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g3-white-hawk-single.dtb
 r8a779g3-white-hawk-single-ard-audio-da7212-dtbs := r8a779g3-white-hawk-single.dtb white-hawk-ard-audio-da7212.dtbo
diff --git a/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-ws-display-13in.dtso b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-ws-display-13in.dtso
new file mode 100644
index 0000000000000..4c3bfd28848aa
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-ws-display-13in.dtso
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Overlay for the Waveshare 13.3 MIPI DSI panel connected
+ * to J4:DSI on R-Car V4H ES3.0 Sparrow Hawk board
+ *
+ * Copyright (C) 2025-2026 Marek Vasut <marek.vasut+renesas@mailbox.org>
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+&{/} {
+	panel {
+		compatible = "waveshare,13.3inch-panel";
+		power-supply = <&reg_5p0v>;
+
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&bridge_out>;
+			};
+		};
+	};
+
+	reg_5p0v: regulator-5p0v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-5.0V";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+};
+
+&i2c0_mux3 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	touchscreen@41 {
+		compatible = "ilitek,ili251x";
+		reg = <0x41>;
+	};
+
+	bridge@45 {
+		compatible = "waveshare,dsi2dpi";
+		reg = <0x45>;
+		power-supply = <&reg_5p0v>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				bridge_in: endpoint {
+					data-lanes = <1 2 3 4>;
+					remote-endpoint = <&dsi0_out>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				bridge_out: endpoint {
+					remote-endpoint = <&panel_in>;
+				};
+			};
+		};
+	};
+};
+
+&dsi0 {
+	status = "okay";
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@1 {
+			reg = <1>;
+
+			dsi0_out: endpoint {
+				remote-endpoint = <&bridge_in>;
+				data-lanes = <1 2 3 4>;
+			};
+		};
+	};
+};
-- 
2.51.0

Re: [PATCH v3 2/2] arm64: dts: renesas: sparrow-hawk: Add overlay for WaveShare Display 13.3"

[Geert Uytterhoeven]

On Sat, 17 Jan 2026 at 01:50, Marek Vasut
<marek.vasut+renesas@mailbox.org> wrote:
> Add a DT overlay to bind the WaveShare 13.3inch 1920x1080 DSI Capacitive
> Touch Display on the Retronix R-Car V4H Sparrow Hawk board.
>
> Current device link is at https://www.waveshare.com/13.3inch-dsi-lcd.htm
>
> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
> ---
> DEPENDS:
> - https://lore.kernel.org/linux-input/20260112234534.225954-1-marek.vasut+renesas@mailbox.org/
> - https://lore.kernel.org/linux-devicetree/20260112234834.226128-1-marek.vasut+renesas@mailbox.org/

> ---
> V2: No change
> V3: Use compatible = "waveshare,13.3inch-panel" and drop timings
>     and dimensions, those are part of panel-simple

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v7.1.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v3 2/2] arm64: dts: renesas: sparrow-hawk: Add overlay for WaveShare Display 13.3"

[Geert Uytterhoeven]

Hi Marek,

On Sat, 17 Jan 2026 at 01:50, Marek Vasut
<marek.vasut+renesas@mailbox.org> wrote:
> Add a DT overlay to bind the WaveShare 13.3inch 1920x1080 DSI Capacitive
> Touch Display on the Retronix R-Car V4H Sparrow Hawk board.
>
> Current device link is at https://www.waveshare.com/13.3inch-dsi-lcd.htm
>
> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

> --- /dev/null
> +++ b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-ws-display-13in.dtso
> @@ -0,0 +1,90 @@
> +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +/*
> + * Device Tree Overlay for the Waveshare 13.3 MIPI DSI panel connected
> + * to J4:DSI on R-Car V4H ES3.0 Sparrow Hawk board
> + *
> + * Copyright (C) 2025-2026 Marek Vasut <marek.vasut+renesas@mailbox.org>
> + */
> +
> +/dts-v1/;
> +/plugin/;
> +
> +#include <dt-bindings/gpio/gpio.h>

This include is not needed, so I will drop it while applying.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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

[Geert Uytterhoeven]

Hi Marek,

On Sat, 17 Jan 2026 at 01:50, Marek Vasut
<marek.vasut+renesas@mailbox.org> wrote:
> 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@mailbox.org>

Thanks for your patch!

> --- 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.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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

[Marek Vasut]

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 ?

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

[Geert Uytterhoeven]

Hi Marek,

On Mon, 19 Jan 2026 at 20:08, Marek Vasut <marek.vasut@mailbox.org> wrote:
> On 1/19/26 4:56 PM, Geert Uytterhoeven wrote:
> >> --- 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 ?

I am just wondering if there is a better way for panels that use
standard timings.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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

[Marek Vasut]

On 1/20/26 10:33 AM, Geert Uytterhoeven wrote:

Hello Geert,

>>> 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 ?
> 
> I am just wondering if there is a better way for panels that use
> standard timings.

I sent a support request to waveshare to get hw details, but I am not 
holding my breath.

I don't think this panel should use standard timings in the first place, 
it should use timings which match the panel, but those are unknown, 
because the content of the metal case is unknown. For now, the timings 
come from the waveshare DTO, which only by coincidence matches the 
standard timings, but that may have to be updated in the future, at 
which point the use of standard timings would have to be removed anyway.

I don't think we should press for standard timings for this particular 
panel. For other panels, the timings come from their EDID/DPCD/... so 
that is already a solved problem.

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

[Neil Armstrong]

On 1/17/26 01:49, Marek Vasut wrote:
> 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@mailbox.org>
> ---
> Cc: Conor Dooley <conor+dt@kernel.org>
> Cc: David Airlie <airlied@gmail.com>
> Cc: Geert Uytterhoeven <geert+renesas@glider.be>
> Cc: Jessica Zhang <jesszhan0024@gmail.com>
> Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> Cc: Magnus Damm <magnus.damm@gmail.com>
> Cc: Maxime Ripard <mripard@kernel.org>
> Cc: Neil Armstrong <neil.armstrong@linaro.org>
> Cc: Rob Herring <robh@kernel.org>
> Cc: Sam Ravnborg <sam@ravnborg.org>
> Cc: Simona Vetter <simona@ffwll.ch>
> Cc: Thierry Reding <thierry.reding@gmail.com>
> Cc: Thomas Zimmermann <tzimmermann@suse.de>
> Cc: devicetree@vger.kernel.org
> Cc: dri-devel@lists.freedesktop.org
> Cc: linux-kernel@vger.kernel.org
> Cc: linux-renesas-soc@vger.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,

LGTM


Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>

Thanks,
Neil

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

[Marek Vasut]

On 2/16/26 5:01 PM, Neil Armstrong wrote:
> On 1/17/26 01:49, Marek Vasut wrote:
>> 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@mailbox.org>
>> ---
>> Cc: Conor Dooley <conor+dt@kernel.org>
>> Cc: David Airlie <airlied@gmail.com>
>> Cc: Geert Uytterhoeven <geert+renesas@glider.be>
>> Cc: Jessica Zhang <jesszhan0024@gmail.com>
>> Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
>> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
>> Cc: Magnus Damm <magnus.damm@gmail.com>
>> Cc: Maxime Ripard <mripard@kernel.org>
>> Cc: Neil Armstrong <neil.armstrong@linaro.org>
>> Cc: Rob Herring <robh@kernel.org>
>> Cc: Sam Ravnborg <sam@ravnborg.org>
>> Cc: Simona Vetter <simona@ffwll.ch>
>> Cc: Thierry Reding <thierry.reding@gmail.com>
>> Cc: Thomas Zimmermann <tzimmermann@suse.de>
>> Cc: devicetree@vger.kernel.org
>> Cc: dri-devel@lists.freedesktop.org
>> Cc: linux-kernel@vger.kernel.org
>> Cc: linux-renesas-soc@vger.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,
> 
> LGTM
> 
> 
> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Would it be OK to apply this now ? Thank you

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

[Neil Armstrong]

Hi,

On Sat, 17 Jan 2026 01:49:48 +0100, Marek Vasut wrote:
> 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.
> 
> [...]

Thanks, Applied to https://gitlab.freedesktop.org/drm/misc/kernel.git (drm-misc-next)

[1/2] drm/panel: simple: Add Waveshare 13.3" panel support
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/46be11b678e0a9a5deaf132cb21afd1259e32d6e
[2/2] arm64: dts: renesas: sparrow-hawk: Add overlay for WaveShare Display 13.3"
      (no commit info)

-- 
Neil