[PATCH 0/8] Add display support for stm32f769-disco board

[PATCH 0/8] Add display support for stm32f769-disco board

[Dario Binacchi]

The series adds display support for the stm32f769-disco board. It has been
tested on hardware revisions MB1225-B03 and MB1166-A09. This required
modifications to the nt35510 driver. As I do not have the Hydis HVA40WV1
display, it would be better if someone tested the driver in that
configuration.


Dario Binacchi (8):
  dt-bindings: mfd: stm32f7: Add binding definition for DSI
  ARM: dts: stm32: add DSI support on stm32f769
  ARM: dts: stm32: rename mmc_vcard to vcc-3v3 on stm32f769-disco
  ARM: dts: stm32: add display support on stm32f769-disco
  dt-bindings: nt35510: add compatible for FRIDA FRD400B25025-A-CTK
  ARM: dts: add stm32f769-disco-mb1225-revb03-mb1166-reva09
  drm/panel: nt35510: refactor panel initialization
  drm/panel: nt35510: support FRIDA FRD400B25025-A-CTK

 .../display/panel/novatek,nt35510.yaml        |  20 +-
 arch/arm/boot/dts/st/Makefile                 |   1 +
 ...f769-disco-mb1225-revb03-mb1166-reva09.dts |  13 +
 arch/arm/boot/dts/st/stm32f769-disco.dts      |  78 +-
 arch/arm/boot/dts/st/stm32f769.dtsi           |  21 +
 drivers/gpu/drm/panel/panel-novatek-nt35510.c | 872 +++++-------------
 include/dt-bindings/mfd/stm32f7-rcc.h         |   1 +
 7 files changed, 362 insertions(+), 644 deletions(-)
 create mode 100644 arch/arm/boot/dts/st/stm32f769-disco-mb1225-revb03-mb1166-reva09.dts
 create mode 100644 arch/arm/boot/dts/st/stm32f769.dtsi

-- 
2.43.0

[PATCH 1/8] dt-bindings: mfd: stm32f7: Add binding definition for DSI

[Dario Binacchi]

Add binding definition for MIPI DSI Host controller.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

 include/dt-bindings/mfd/stm32f7-rcc.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/dt-bindings/mfd/stm32f7-rcc.h b/include/dt-bindings/mfd/stm32f7-rcc.h
index 8d73a9c51e2b..a4e4f9271395 100644
--- a/include/dt-bindings/mfd/stm32f7-rcc.h
+++ b/include/dt-bindings/mfd/stm32f7-rcc.h
@@ -108,6 +108,7 @@
 #define STM32F7_RCC_APB2_SAI1		22
 #define STM32F7_RCC_APB2_SAI2		23
 #define STM32F7_RCC_APB2_LTDC		26
+#define STM32F7_RCC_APB2_DSI		27
 
 #define STM32F7_APB2_RESET(bit)	(STM32F7_RCC_APB2_##bit + (0x24 * 8))
 #define STM32F7_APB2_CLOCK(bit)	(STM32F7_RCC_APB2_##bit + 0xA0)
-- 
2.43.0

Re: [PATCH 1/8] dt-bindings: mfd: stm32f7: Add binding definition for DSI

[Conor Dooley]

[-- Attachment #1: Type: text/plain, Size: 270 bytes --]

On Fri, Dec 29, 2023 at 02:51:16PM +0100, Dario Binacchi wrote:
> Add binding definition for MIPI DSI Host controller.
> 
> Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>

Acked-by: Conor Dooley <conor.dooley@microchip.com>

Cheers,
Conor.

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]

[PATCH 2/8] ARM: dts: stm32: add DSI support on stm32f769

[Dario Binacchi]

Add support for MIPI DSI Host controller. Since MIPI DSI is not
available on stm32f746, the patch adds the "stm32f769.dtsi" file
containing the dsi node inside.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

 arch/arm/boot/dts/st/stm32f769.dtsi | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 arch/arm/boot/dts/st/stm32f769.dtsi

diff --git a/arch/arm/boot/dts/st/stm32f769.dtsi b/arch/arm/boot/dts/st/stm32f769.dtsi
new file mode 100644
index 000000000000..e09184f7079c
--- /dev/null
+++ b/arch/arm/boot/dts/st/stm32f769.dtsi
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023 Dario Binacchi <dario.binacchi@amarulasolutions.com>
+ */
+
+#include "stm32f746.dtsi"
+
+/ {
+	soc {
+		dsi: dsi@40016c00 {
+			compatible = "st,stm32-dsi";
+			reg = <0x40016c00 0x800>;
+			interrupts = <98>;
+			clocks = <&rcc 1 CLK_F769_DSI>, <&clk_hse>;
+			clock-names = "pclk", "ref";
+			resets = <&rcc STM32F7_APB2_RESET(DSI)>;
+			reset-names = "apb";
+			status = "disabled";
+		};
+	};
+};
-- 
2.43.0

[PATCH 3/8] ARM: dts: stm32: rename mmc_vcard to vcc-3v3 on stm32f769-disco

[Dario Binacchi]

In the schematics of document UM2033, the power supply for the micro SD
card is the same 3v3 voltage that is used to power other devices on the
board. By generalizing the name of the voltage regulator, it can be
referenced by other nodes in the device tree without creating
misunderstandings.

This patch is preparatory for future developments.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

 arch/arm/boot/dts/st/stm32f769-disco.dts | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/st/stm32f769-disco.dts b/arch/arm/boot/dts/st/stm32f769-disco.dts
index 5d12ae25b327..8632bd866272 100644
--- a/arch/arm/boot/dts/st/stm32f769-disco.dts
+++ b/arch/arm/boot/dts/st/stm32f769-disco.dts
@@ -92,9 +92,9 @@ usbotg_hs_phy: usb-phy {
 		clock-names = "main_clk";
 	};
 
-	mmc_vcard: mmc_vcard {
+	vcc_3v3: vcc_3v3 {
 		compatible = "regulator-fixed";
-		regulator-name = "mmc_vcard";
+		regulator-name = "vcc_3v3";
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
 	};
@@ -128,7 +128,7 @@ &rtc {
 
 &sdio2 {
 	status = "okay";
-	vmmc-supply = <&mmc_vcard>;
+	vmmc-supply = <&vcc_3v3>;
 	cd-gpios = <&gpioi 15 GPIO_ACTIVE_LOW>;
 	broken-cd;
 	pinctrl-names = "default", "opendrain", "sleep";
-- 
2.43.0

[PATCH 4/8] ARM: dts: stm32: add display support on stm32f769-disco

[Dario Binacchi]

The patch adds display support on the stm32f769-disco board.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

 arch/arm/boot/dts/st/stm32f769-disco.dts | 72 +++++++++++++++++++++++-
 1 file changed, 71 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/st/stm32f769-disco.dts b/arch/arm/boot/dts/st/stm32f769-disco.dts
index 8632bd866272..d1eb5f9c78bf 100644
--- a/arch/arm/boot/dts/st/stm32f769-disco.dts
+++ b/arch/arm/boot/dts/st/stm32f769-disco.dts
@@ -41,7 +41,7 @@
  */
 
 /dts-v1/;
-#include "stm32f746.dtsi"
+#include "stm32f769.dtsi"
 #include "stm32f769-pinctrl.dtsi"
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/gpio/gpio.h>
@@ -60,6 +60,19 @@ memory@c0000000 {
 		reg = <0xC0000000 0x1000000>;
 	};
 
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		linux,dma {
+			compatible = "shared-dma-pool";
+			linux,dma-default;
+			no-map;
+			size = <0x100000>;
+		};
+	};
+
 	aliases {
 		serial0 = &usart1;
 	};
@@ -85,6 +98,13 @@ button-0 {
 		};
 	};
 
+	panel_backlight: panel-backlight {
+		compatible = "gpio-backlight";
+		gpios = <&gpioi 14 GPIO_ACTIVE_HIGH>;
+		default-on;
+		status = "okay";
+	};
+
 	usbotg_hs_phy: usb-phy {
 		#phy-cells = <0>;
 		compatible = "usb-nop-xceiv";
@@ -114,6 +134,46 @@ &clk_hse {
 	clock-frequency = <25000000>;
 };
 
+&dsi {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+			dsi_in: endpoint {
+				remote-endpoint = <&ltdc_out_dsi>;
+			};
+		};
+
+		port@1 {
+			reg = <1>;
+			dsi_out: endpoint {
+				remote-endpoint = <&dsi_panel_in>;
+			};
+		};
+	};
+
+	panel0: panel-dsi@0 {
+		compatible = "orisetech,otm8009a";
+		reg = <0>; /* dsi virtual channel (0..3) */
+		reset-gpios = <&gpioj 15 GPIO_ACTIVE_LOW>;
+		power-supply = <&vcc_3v3>;
+		backlight = <&panel_backlight>;
+		status = "okay";
+
+		port {
+			dsi_panel_in: endpoint {
+				remote-endpoint = <&dsi_out>;
+			};
+		};
+	};
+};
+
 &i2c1 {
 	pinctrl-0 = <&i2c1_pins_b>;
 	pinctrl-names = "default";
@@ -122,6 +182,16 @@ &i2c1 {
 	status = "okay";
 };
 
+&ltdc {
+	status = "okay";
+
+	port {
+		ltdc_out_dsi: endpoint@0 {
+			remote-endpoint = <&dsi_in>;
+		};
+	};
+};
+
 &rtc {
 	status = "okay";
 };
-- 
2.43.0

[PATCH 5/8] dt-bindings: nt35510: add compatible for FRIDA FRD400B25025-A-CTK

[Dario Binacchi]

The patch adds the FRIDA FRD400B25025-A-CTK panel, which belongs to the
Novatek NT35510-based panel family.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

 .../display/panel/novatek,nt35510.yaml        | 20 +++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml b/Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml
index bc92928c805b..511b93a376b7 100644
--- a/Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml
+++ b/Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml
@@ -14,14 +14,18 @@ allOf:
 
 properties:
   compatible:
-    items:
-      - const: hydis,hva40wv1
-      - const: novatek,nt35510
-    description: This indicates the panel manufacturer of the panel
-      that is in turn using the NT35510 panel driver. The compatible
-      string determines how the NT35510 panel driver shall be configured
-      to work with the indicated panel. The novatek,nt35510 compatible shall
-      always be provided as a fallback.
+    oneOf:
+      items:
+        - const: hydis,hva40wv1
+        - const: novatek,nt35510
+      items:
+        - const: frida,frd400b25025
+        - const: novatek,nt35510
+      description: This indicates the panel manufacturer of the panel
+        that is in turn using the NT35510 panel driver. The compatible
+        string determines how the NT35510 panel driver shall be configured
+        to work with the indicated panel. The novatek,nt35510 compatible shall
+        always be provided as a fallback.
   reg: true
   reset-gpios: true
   vdd-supply:
-- 
2.43.0

Re: [PATCH 5/8] dt-bindings: nt35510: add compatible for FRIDA FRD400B25025-A-CTK

[Rob Herring]

On Fri, 29 Dec 2023 14:51:20 +0100, Dario Binacchi wrote:
> The patch adds the FRIDA FRD400B25025-A-CTK panel, which belongs to the
> Novatek NT35510-based panel family.
> 
> Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
> ---
> 
>  .../display/panel/novatek,nt35510.yaml        | 20 +++++++++++--------
>  1 file changed, 12 insertions(+), 8 deletions(-)
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:
./Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml:21:7: [error] duplication of key "items" in mapping (key-duplicates)

dtschema/dtc warnings/errors:
make[2]: *** Deleting file 'Documentation/devicetree/bindings/display/panel/novatek,nt35510.example.dts'
Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml:21:7: found duplicate key "items" with value "[]" (original value: "[]")
make[2]: *** [Documentation/devicetree/bindings/Makefile:26: Documentation/devicetree/bindings/display/panel/novatek,nt35510.example.dts] Error 1
make[2]: *** Waiting for unfinished jobs....
./Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml:21:7: found duplicate key "items" with value "[]" (original value: "[]")
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml: ignoring, error parsing file
make[1]: *** [/builds/robherring/dt-review-ci/linux/Makefile:1424: dt_binding_check] Error 2
make: *** [Makefile:234: __sub-make] Error 2

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20231229135154.675946-6-dario.binacchi@amarulasolutions.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.

Re: [PATCH 5/8] dt-bindings: nt35510: add compatible for FRIDA FRD400B25025-A-CTK

[Linus Walleij]

Hi Dario,

thanks for your patch!

On Fri, Dec 29, 2023 at 2:52 PM Dario Binacchi
<dario.binacchi@amarulasolutions.com> wrote:

> The patch adds the FRIDA FRD400B25025-A-CTK panel, which belongs to the
> Novatek NT35510-based panel family.
>
> Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
(...)


> +    oneOf:
> +      items:
> +        - const: hydis,hva40wv1
> +        - const: novatek,nt35510
> +      items:
> +        - const: frida,frd400b25025
> +        - const: novatek,nt35510

You need a dash in from of each "items:" for that to work.

Yours,
Linus Walleij

Re: [PATCH 5/8] dt-bindings: nt35510: add compatible for FRIDA FRD400B25025-A-CTK

[Dario Binacchi]

Hi Linus,

On Fri, Dec 29, 2023 at 6:34 PM Linus Walleij <linus.walleij@linaro.org> wrote:
>
> Hi Dario,
>
> thanks for your patch!
>
> On Fri, Dec 29, 2023 at 2:52 PM Dario Binacchi
> <dario.binacchi@amarulasolutions.com> wrote:
>
> > The patch adds the FRIDA FRD400B25025-A-CTK panel, which belongs to the
> > Novatek NT35510-based panel family.
> >
> > Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
> (...)
>
>
> > +    oneOf:
> > +      items:
> > +        - const: hydis,hva40wv1
> > +        - const: novatek,nt35510
> > +      items:
> > +        - const: frida,frd400b25025
> > +        - const: novatek,nt35510
>
> You need a dash in from of each "items:" for that to work.

Thanks for your help.

Regards
Dario

>
> Yours,
> Linus Walleij



-- 

Dario Binacchi

Senior Embedded Linux Developer

dario.binacchi@amarulasolutions.com

__________________________________


Amarula Solutions SRL

Via Le Canevare 30, 31100 Treviso, Veneto, IT

T. +39 042 243 5310
info@amarulasolutions.com

www.amarulasolutions.com

Re: [PATCH 5/8] dt-bindings: nt35510: add compatible for FRIDA FRD400B25025-A-CTK

[kernel test robot]

Hi Dario,

kernel test robot noticed the following build warnings:

[auto build test WARNING on atorgue-stm32/stm32-next]
[also build test WARNING on drm-misc/drm-misc-next lee-mfd/for-mfd-next robh/for-next linus/master v6.7-rc7 next-20231222]
[cannot apply to lee-mfd/for-mfd-fixes]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Dario-Binacchi/dt-bindings-mfd-stm32f7-Add-binding-definition-for-DSI/20231229-215601
base:   https://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32.git stm32-next
patch link:    https://lore.kernel.org/r/20231229135154.675946-6-dario.binacchi%40amarulasolutions.com
patch subject: [PATCH 5/8] dt-bindings: nt35510: add compatible for FRIDA FRD400B25025-A-CTK
:::::: branch date: 20 hours ago
:::::: commit date: 20 hours ago
compiler: loongarch64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231230/202312301748.2BRGs7Xs-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202312301748.2BRGs7Xs-lkp@intel.com/

dtcheck warnings: (new ones prefixed by >>)
>> Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml:21:7: [error] duplication of key "items" in mapping (key-duplicates)
--
>> Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml:21:7: found duplicate key "items" with value "[]" (original value: "[]")
   Documentation/devicetree/bindings/iio/pressure/honeywell,mprls0025pa.yaml: properties:honeywell,pmin-pascal: '$ref' should not be valid under {'const': '$ref'}
   	hint: Standard unit suffix properties don't need a type $ref
   	from schema $id: http://devicetree.org/meta-schemas/core.yaml#
   Documentation/devicetree/bindings/iio/pressure/honeywell,mprls0025pa.yaml: properties:honeywell,pmax-pascal: '$ref' should not be valid under {'const': '$ref'}
   	hint: Standard unit suffix properties don't need a type $ref
   	from schema $id: http://devicetree.org/meta-schemas/core.yaml#
--
>> Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml: ignoring, error parsing file
   Documentation/devicetree/bindings/net/snps,dwmac.yaml: mac-mode: missing type definition

vim +/items +21 Documentation/devicetree/bindings/display/panel/novatek,nt35510.yaml

5ce96fe032f43e Linus Walleij  2020-02-23   8  
5ce96fe032f43e Linus Walleij  2020-02-23   9  maintainers:
5ce96fe032f43e Linus Walleij  2020-02-23  10    - Linus Walleij <linus.walleij@linaro.org>
5ce96fe032f43e Linus Walleij  2020-02-23  11  
5ce96fe032f43e Linus Walleij  2020-02-23  12  allOf:
5ce96fe032f43e Linus Walleij  2020-02-23  13    - $ref: panel-common.yaml#
5ce96fe032f43e Linus Walleij  2020-02-23  14  
5ce96fe032f43e Linus Walleij  2020-02-23  15  properties:
5ce96fe032f43e Linus Walleij  2020-02-23  16    compatible:
859f1d9e26606c Dario Binacchi 2023-12-29  17      oneOf:
5ce96fe032f43e Linus Walleij  2020-02-23  18        items:
5ce96fe032f43e Linus Walleij  2020-02-23  19          - const: hydis,hva40wv1
5ce96fe032f43e Linus Walleij  2020-02-23  20          - const: novatek,nt35510
859f1d9e26606c Dario Binacchi 2023-12-29 @21        items:
859f1d9e26606c Dario Binacchi 2023-12-29  22          - const: frida,frd400b25025
859f1d9e26606c Dario Binacchi 2023-12-29  23          - const: novatek,nt35510
5ce96fe032f43e Linus Walleij  2020-02-23  24        description: This indicates the panel manufacturer of the panel
5ce96fe032f43e Linus Walleij  2020-02-23  25          that is in turn using the NT35510 panel driver. The compatible
5ce96fe032f43e Linus Walleij  2020-02-23  26          string determines how the NT35510 panel driver shall be configured
5ce96fe032f43e Linus Walleij  2020-02-23  27          to work with the indicated panel. The novatek,nt35510 compatible shall
5ce96fe032f43e Linus Walleij  2020-02-23  28          always be provided as a fallback.
5ce96fe032f43e Linus Walleij  2020-02-23  29    reg: true
5ce96fe032f43e Linus Walleij  2020-02-23  30    reset-gpios: true
5ce96fe032f43e Linus Walleij  2020-02-23  31    vdd-supply:
5ce96fe032f43e Linus Walleij  2020-02-23  32      description: regulator that supplies the vdd voltage
5ce96fe032f43e Linus Walleij  2020-02-23  33    vddi-supply:
5ce96fe032f43e Linus Walleij  2020-02-23  34      description: regulator that supplies the vddi voltage
5ce96fe032f43e Linus Walleij  2020-02-23  35    backlight: true
5ce96fe032f43e Linus Walleij  2020-02-23  36  
5ce96fe032f43e Linus Walleij  2020-02-23  37  required:
5ce96fe032f43e Linus Walleij  2020-02-23  38    - compatible
5ce96fe032f43e Linus Walleij  2020-02-23  39    - reg
5ce96fe032f43e Linus Walleij  2020-02-23  40  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

[PATCH 6/8] ARM: dts: add stm32f769-disco-mb1225-revb03-mb1166-reva09

[Dario Binacchi]

As reported in the section 8.3 (i. e. Board revision history) of document
UM2033 (i. e. Discovery kit with STM32F769NI MCU) these are the changes
related to the board revisions addressed by the patch:
- Board MB1225 revision B-03:
  - Memory MICRON MT48LC4M32B2B5-6A replaced by ISSI IS42S32400F-6BL
- Board MB1166 revision A-09:
  - LCD FRIDA FRD397B25009-D-CTK replaced by FRIDA FRD400B25025-A-CTK

The patch only adds the DTS support for the new display which belongs to
to the Novatek NT35510-based panel family.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
---

 arch/arm/boot/dts/st/Makefile                       |  1 +
 .../stm32f769-disco-mb1225-revb03-mb1166-reva09.dts | 13 +++++++++++++
 2 files changed, 14 insertions(+)
 create mode 100644 arch/arm/boot/dts/st/stm32f769-disco-mb1225-revb03-mb1166-reva09.dts

diff --git a/arch/arm/boot/dts/st/Makefile b/arch/arm/boot/dts/st/Makefile
index 7892ad69b441..390dbd300a57 100644
--- a/arch/arm/boot/dts/st/Makefile
+++ b/arch/arm/boot/dts/st/Makefile
@@ -23,6 +23,7 @@ dtb-$(CONFIG_ARCH_STM32) += \
 	stm32f469-disco.dtb \
 	stm32f746-disco.dtb \
 	stm32f769-disco.dtb \
+	stm32f769-disco-mb1225-revb03-mb1166-reva09.dts \
 	stm32429i-eval.dtb \
 	stm32746g-eval.dtb \
 	stm32h743i-eval.dtb \
diff --git a/arch/arm/boot/dts/st/stm32f769-disco-mb1225-revb03-mb1166-reva09.dts b/arch/arm/boot/dts/st/stm32f769-disco-mb1225-revb03-mb1166-reva09.dts
new file mode 100644
index 000000000000..ff7ff32371d0
--- /dev/null
+++ b/arch/arm/boot/dts/st/stm32f769-disco-mb1225-revb03-mb1166-reva09.dts
@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023 Dario Binacchi <dario.binacchi@amarulasolutions.com>
+ */
+
+#include "stm32f769-disco.dts"
+
+&panel0 {
+	compatible = "frida,frd400b25025", "novatek,nt35510";
+	vddi-supply = <&vcc_3v3>;
+	vdd-supply = <&vcc_3v3>;
+	/delete-property/power-supply;
+};
-- 
2.43.0