[PATCH v2 0/2] arm64: dts: qcom: Add RPi 7-inch DSI panel overlays for Monaco/Lemans EVK

[PATCH v2 0/2] arm64: dts: qcom: Add RPi 7-inch DSI panel overlays for Monaco/Lemans EVK

[Shashank Maurya]

Add device tree overlays to enable support for the Raspberry Pi 7-inch
DSI touchscreen panel on Qualcomm Monaco and Lemans EVK platforms.

The overlays configure the panel on the primary DSI interface using
a 2-lane DSI connection and instantiate the panel MCU on the
corresponding touchscreen I2C bus for each platform. The changes
allow the Raspberry Pi 7-inch display to be used as an external
display option on both EVKs without affecting the default platform
configuration.

---
To: Bjorn Andersson <andersson@kernel.org>
To: Konrad Dybcio <konradybcio@kernel.org>
To: Rob Herring <robh@kernel.org>
To: Krzysztof Kozlowski <krzk+dt@kernel.org>
To: Conor Dooley <conor+dt@kernel.org>
To: Florian Fainelli <florian.fainelli@broadcom.com>
To: Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>
Cc: linux-arm-msm@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-rpi-kernel@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org

---
Shashank Maurya (2):
      arm64: dts: qcom: monaco-evk: Add Raspberry Pi 7-inch DSI panel overlay
      arm64: dts: qcom: lemans-evk: Add Raspberry Pi 7-inch DSI panel overlay

 arch/arm64/boot/dts/qcom/Makefile                  |  4 ++
 .../dts/qcom/lemans-evk-raspberrypi-dsi-7inch.dtso | 83 ++++++++++++++++++++++
 .../dts/qcom/monaco-evk-raspberrypi-dsi-7inch.dtso | 82 +++++++++++++++++++++
 3 files changed, 169 insertions(+)
---
base-commit: ed2647532a225739e86c7f236a2ce82764ec2772
change-id: 20260907-rpi_dts_overlay-58088ffce047
prerequisite-message-id: <20260907-rpi_reg-v2-0-0c59aa60d31f@oss.qualcomm.com>
prerequisite-patch-id: 5212bf185b35c36ed8857a67f29e60386d59ac60
prerequisite-patch-id: 056a90b913170106a6f8c1feb2366ee83c4375b9

Best regards,
--  
Shashank Maurya <shashank.maurya@oss.qualcomm.com>

[PATCH v2 1/2] arm64: dts: qcom: monaco-evk: Add Raspberry Pi 7-inch DSI panel overlay

[Shashank Maurya]

Add a DT overlay for the Raspberry Pi 7" DSI touchscreen panel on
Monaco EVK, using mdss_dsi0 with 2 data lanes and the panel MCU on
I2C8.

Signed-off-by: Shashank Maurya <shashank.maurya@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/Makefile                  |  2 +
 .../dts/qcom/monaco-evk-raspberrypi-dsi-7inch.dtso | 82 ++++++++++++++++++++++
 2 files changed, 84 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 1c86e7e98f55..38554195fc98 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -71,6 +71,8 @@ monaco-evk-el2-dtbs := monaco-evk.dtb monaco-el2.dtbo
 dtb-$(CONFIG_ARCH_QCOM)	+= monaco-evk-el2.dtb
 monaco-evk-ifp-mezzanine-dtbs	:= monaco-evk.dtb monaco-evk-ifp-mezzanine.dtbo
 dtb-$(CONFIG_ARCH_QCOM)	+= monaco-evk-ifp-mezzanine.dtb
+monaco-evk-raspberrypi-dsi-7inch-dtbs	:= monaco-evk.dtb monaco-evk-raspberrypi-dsi-7inch.dtbo
+dtb-$(CONFIG_ARCH_QCOM)	+= monaco-evk-raspberrypi-dsi-7inch.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8216-samsung-fortuna3g.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-acer-a1-724.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-alcatel-idol347.dtb
diff --git a/arch/arm64/boot/dts/qcom/monaco-evk-raspberrypi-dsi-7inch.dtso b/arch/arm64/boot/dts/qcom/monaco-evk-raspberrypi-dsi-7inch.dtso
new file mode 100644
index 000000000000..f27b5a4a6093
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/monaco-evk-raspberrypi-dsi-7inch.dtso
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+&{/} {
+	display_bl: backlight {
+		compatible = "pwm-backlight";
+		power-supply = <&reg_dsi_touch>;
+		pwms = <&reg_backlight 0 50000 0>;
+	};
+
+	reg_dsi_touch: regulator-touch {
+		compatible = "regulator-fixed";
+		regulator-name = "rpi-touch";
+		regulator-min-microvolt = <5500000>;
+		regulator-max-microvolt = <5500000>;
+		gpio = <&expander3 5 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		regulator-always-on;
+	};
+};
+
+&i2c8 {
+	qcom,load-firmware;
+	qcom,xfer-mode = <1>;
+
+	status = "okay";
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	reg_backlight: reg_backlight@45 {
+		compatible = "raspberrypi,touchscreen-panel-regulator-v2";
+		reg = <0x45>;
+
+		vcc-supply = <&reg_dsi_touch>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		#pwm-cells = <3>;
+	};
+};
+
+&mdss_dsi0 {
+	vdda-supply = <&vreg_l1c>;
+
+	status = "okay";
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	panel@0 {
+		compatible = "raspberrypi,dsi-7inch";
+		reg = <0>;
+
+		reset-gpios = <&reg_backlight 0 GPIO_ACTIVE_LOW>;
+		power-supply = <&reg_dsi_touch>;
+		iovcc-supply = <&reg_dsi_touch>;
+		backlight = <&display_bl>;
+
+		port {
+			panel0_in: endpoint {
+				remote-endpoint = <&mdss_dsi0_out>;
+			};
+		};
+	};
+};
+
+&mdss_dsi0_out {
+	remote-endpoint = <&panel0_in>;
+	data-lanes = <0 1>;
+};
+
+&mdss_dsi0_phy {
+	vdds-supply = <&vreg_l4a>;
+
+	status = "okay";
+};

-- 
2.34.1

[PATCH v2 2/2] arm64: dts: qcom: lemans-evk: Add Raspberry Pi 7-inch DSI panel overlay

[Shashank Maurya]

Add a DT overlay for the Raspberry Pi 7" DSI touchscreen panel on
Lemans EVK, using mdss0_dsi0 with 2 data lanes and the panel MCU on
I2C1.

Signed-off-by: Shashank Maurya <shashank.maurya@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/Makefile                  |  2 +
 .../dts/qcom/lemans-evk-raspberrypi-dsi-7inch.dtso | 83 ++++++++++++++++++++++
 2 files changed, 85 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 38554195fc98..d17b46a043ad 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -57,6 +57,8 @@ lemans-evk-el2-dtbs := lemans-evk.dtb lemans-el2.dtbo
 dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-el2.dtb
 lemans-evk-ifp-mezzanine-dtbs	:= lemans-evk.dtb lemans-evk-ifp-mezzanine.dtbo
 dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-ifp-mezzanine.dtb
+lemans-evk-raspberrypi-dsi-7inch-dtbs	:= lemans-evk.dtb lemans-evk-raspberrypi-dsi-7inch.dtbo
+dtb-$(CONFIG_ARCH_QCOM)	+= lemans-evk-raspberrypi-dsi-7inch.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= mahua-crd.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= milos-fairphone-fp6.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= milos-nothing-asteroids.dtb
diff --git a/arch/arm64/boot/dts/qcom/lemans-evk-raspberrypi-dsi-7inch.dtso b/arch/arm64/boot/dts/qcom/lemans-evk-raspberrypi-dsi-7inch.dtso
new file mode 100644
index 000000000000..14743b3c3863
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/lemans-evk-raspberrypi-dsi-7inch.dtso
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: BSD-3-Clause
+/*
+ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+ */
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+&{/} {
+	display_bl: backlight {
+		compatible = "pwm-backlight";
+		power-supply = <&reg_dsi_touch>;
+		pwms = <&reg_backlight 0 255 0>;
+	};
+
+	reg_dsi_touch: regulator-touch {
+		compatible = "regulator-fixed";
+		regulator-name = "rpi-dsi-touch";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&expander3 1 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+};
+
+&i2c1 {
+	qcom,load-firmware;
+	qcom,xfer-mode = <1>;
+
+	status = "okay";
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	reg_backlight: reg_backlight@45 {
+		compatible = "raspberrypi,touchscreen-panel-regulator-v2";
+		reg = <0x45>;
+
+		vcc-supply = <&reg_dsi_touch>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		#pwm-cells = <3>;
+	};
+};
+
+&mdss0_dsi0 {
+	vdda-supply = <&vreg_l1c>;
+
+	status = "okay";
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	panel@0 {
+		compatible = "raspberrypi,dsi-7inch";
+		reg = <0>;
+
+		reset-gpios = <&reg_backlight 0 GPIO_ACTIVE_LOW>;
+		power-supply = <&reg_dsi_touch>;
+		iovcc-supply = <&reg_dsi_touch>;
+		backlight = <&display_bl>;
+
+		port {
+			panel0_in: endpoint {
+				remote-endpoint = <&mdss0_dsi0_out>;
+			};
+		};
+	};
+};
+
+&mdss0_dsi0_out {
+	remote-endpoint = <&panel0_in>;
+	data-lanes = <0 1>;
+};
+
+&mdss0_dsi0_phy {
+	vdds-supply = <&vreg_l4a>;
+
+	status = "okay";
+};

-- 
2.34.1

Re: [PATCH v2 1/2] arm64: dts: qcom: monaco-evk: Add Raspberry Pi 7-inch DSI panel overlay

[Konrad Dybcio]

On 9/7/26 8:33 AM, Shashank Maurya wrote:
> Add a DT overlay for the Raspberry Pi 7" DSI touchscreen panel on
> Monaco EVK, using mdss_dsi0 with 2 data lanes and the panel MCU on
> I2C8.
> 
> Signed-off-by: Shashank Maurya <shashank.maurya@oss.qualcomm.com>
> ---

[...]

> +&i2c8 {
> +	qcom,load-firmware;
> +	qcom,xfer-mode = <1>;

This property is undocumented and unconsumed

Konrad

Re: [PATCH v2 1/2] arm64: dts: qcom: monaco-evk: Add Raspberry Pi 7-inch DSI panel overlay

[Konrad Dybcio]

On 9/7/26 8:33 AM, Shashank Maurya wrote:
> Add a DT overlay for the Raspberry Pi 7" DSI touchscreen panel on
> Monaco EVK, using mdss_dsi0 with 2 data lanes and the panel MCU on
> I2C8.
> 
> Signed-off-by: Shashank Maurya <shashank.maurya@oss.qualcomm.com>
> ---

[...]

> +	reg_dsi_touch: regulator-touch {
> +		compatible = "regulator-fixed";
> +		regulator-name = "rpi-touch";
> +		regulator-min-microvolt = <5500000>;
> +		regulator-max-microvolt = <5500000>;
> +		gpio = <&expander3 5 GPIO_ACTIVE_HIGH>;
> +		enable-active-high;
> +		regulator-always-on;
> +	};

Does this need to be always-on? There's clearly a consumer for it

Konrad

Re: [PATCH v2 0/2] arm64: dts: qcom: Add RPi 7-inch DSI panel overlays for Monaco/Lemans EVK

[Bjorn Andersson]

On Mon, Sep 07, 2026 at 12:03:52PM +0530, Shashank Maurya wrote:
> Add device tree overlays to enable support for the Raspberry Pi 7-inch
> DSI touchscreen panel on Qualcomm Monaco and Lemans EVK platforms.
> 
> The overlays configure the panel on the primary DSI interface using
> a 2-lane DSI connection and instantiate the panel MCU on the
> corresponding touchscreen I2C bus for each platform. The changes
> allow the Raspberry Pi 7-inch display to be used as an external
> display option on both EVKs without affecting the default platform
> configuration.
> 
> ---
> To: Bjorn Andersson <andersson@kernel.org>
> To: Konrad Dybcio <konradybcio@kernel.org>
> To: Rob Herring <robh@kernel.org>
> To: Krzysztof Kozlowski <krzk+dt@kernel.org>
> To: Conor Dooley <conor+dt@kernel.org>
> To: Florian Fainelli <florian.fainelli@broadcom.com>
> To: Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>
> Cc: linux-arm-msm@vger.kernel.org
> Cc: devicetree@vger.kernel.org
> Cc: linux-kernel@vger.kernel.org
> Cc: linux-rpi-kernel@lists.infradead.org
> Cc: linux-arm-kernel@lists.infradead.org
> 
> ---
> Shashank Maurya (2):
>       arm64: dts: qcom: monaco-evk: Add Raspberry Pi 7-inch DSI panel overlay
>       arm64: dts: qcom: lemans-evk: Add Raspberry Pi 7-inch DSI panel overlay
> 
>  arch/arm64/boot/dts/qcom/Makefile                  |  4 ++
>  .../dts/qcom/lemans-evk-raspberrypi-dsi-7inch.dtso | 83 ++++++++++++++++++++++
>  .../dts/qcom/monaco-evk-raspberrypi-dsi-7inch.dtso | 82 +++++++++++++++++++++
>  3 files changed, 169 insertions(+)
> ---
> base-commit: ed2647532a225739e86c7f236a2ce82764ec2772
> change-id: 20260907-rpi_dts_overlay-58088ffce047
> prerequisite-message-id: <20260907-rpi_reg-v2-0-0c59aa60d31f@oss.qualcomm.com>

The two dts patches in this series clearly relates to those two
regulator patches, which has received change requests.

I would have sent the 4 patches together in a series, but as you didn't
you sent this series with unmet dependencies.

All I can do now is reject this series as well. Please send v2 once the
driver changes has been merged and you have validated this again.

Regards,
Bjorn

> prerequisite-patch-id: 5212bf185b35c36ed8857a67f29e60386d59ac60
> prerequisite-patch-id: 056a90b913170106a6f8c1feb2366ee83c4375b9
> 
> Best regards,
> --  
> Shashank Maurya <shashank.maurya@oss.qualcomm.com>
> 

Re: [PATCH v2 0/2] arm64: dts: qcom: Add RPi 7-inch DSI panel overlays for Monaco/Lemans EVK

[Shashank Maurya]

On Thu, Sep 10, 2026 at 02:35:41PM -0500, Bjorn Andersson wrote:
> On Mon, Sep 07, 2026 at 12:03:52PM +0530, Shashank Maurya wrote:
> > Add device tree overlays to enable support for the Raspberry Pi 7-inch
> > DSI touchscreen panel on Qualcomm Monaco and Lemans EVK platforms.
> > 
> > The overlays configure the panel on the primary DSI interface using
> > a 2-lane DSI connection and instantiate the panel MCU on the
> > corresponding touchscreen I2C bus for each platform. The changes
> > allow the Raspberry Pi 7-inch display to be used as an external
> > display option on both EVKs without affecting the default platform
> > configuration.
> > 
> > ---
> > To: Bjorn Andersson <andersson@kernel.org>
> > To: Konrad Dybcio <konradybcio@kernel.org>
> > To: Rob Herring <robh@kernel.org>
> > To: Krzysztof Kozlowski <krzk+dt@kernel.org>
> > To: Conor Dooley <conor+dt@kernel.org>
> > To: Florian Fainelli <florian.fainelli@broadcom.com>
> > To: Broadcom internal kernel review list <bcm-kernel-feedback-list@broadcom.com>
> > Cc: linux-arm-msm@vger.kernel.org
> > Cc: devicetree@vger.kernel.org
> > Cc: linux-kernel@vger.kernel.org
> > Cc: linux-rpi-kernel@lists.infradead.org
> > Cc: linux-arm-kernel@lists.infradead.org
> > 
> > ---
> > Shashank Maurya (2):
> >       arm64: dts: qcom: monaco-evk: Add Raspberry Pi 7-inch DSI panel overlay
> >       arm64: dts: qcom: lemans-evk: Add Raspberry Pi 7-inch DSI panel overlay
> > 
> >  arch/arm64/boot/dts/qcom/Makefile                  |  4 ++
> >  .../dts/qcom/lemans-evk-raspberrypi-dsi-7inch.dtso | 83 ++++++++++++++++++++++
> >  .../dts/qcom/monaco-evk-raspberrypi-dsi-7inch.dtso | 82 +++++++++++++++++++++
> >  3 files changed, 169 insertions(+)
> > ---
> > base-commit: ed2647532a225739e86c7f236a2ce82764ec2772
> > change-id: 20260907-rpi_dts_overlay-58088ffce047
> > prerequisite-message-id: <20260907-rpi_reg-v2-0-0c59aa60d31f@oss.qualcomm.com>
> 
> The two dts patches in this series clearly relates to those two
> regulator patches, which has received change requests.
> 
> I would have sent the 4 patches together in a series, but as you didn't
> you sent this series with unmet dependencies.
> 
> All I can do now is reject this series as well. Please send v2 once the
> driver changes has been merged and you have validated this again.
> 
> Regards,
> Bjorn
> 
> > prerequisite-patch-id: 5212bf185b35c36ed8857a67f29e60386d59ac60
> > prerequisite-patch-id: 056a90b913170106a6f8c1feb2366ee83c4375b9
> > 
> > Best regards,
> > --  
> > Shashank Maurya <shashank.maurya@oss.qualcomm.com>
> > 

Hi Bjorn,

Thanks for the review.

The regulator patches and DTS patches are targeting different maintainer trees 
and therefore were developed and submitted from separate workspaces. While the
DTS changes depend on the regulator updates, the two sets of patches cannot 
realistically be carried in a single series because they are reviewed and 
merged through different paths.

I submitted the DTS series separately to start the review process in parallel,
but I understand your concern about the unresolved dependency.

Regards,
Shashank

Re: [PATCH v2 1/2] arm64: dts: qcom: monaco-evk: Add Raspberry Pi 7-inch DSI panel overlay

[Shashank Maurya]

On Wed, Sep 09, 2026 at 04:51:01PM +0200, Konrad Dybcio wrote:
> On 9/7/26 8:33 AM, Shashank Maurya wrote:
> > Add a DT overlay for the Raspberry Pi 7" DSI touchscreen panel on
> > Monaco EVK, using mdss_dsi0 with 2 data lanes and the panel MCU on
> > I2C8.
> > 
> > Signed-off-by: Shashank Maurya <shashank.maurya@oss.qualcomm.com>
> > ---
> 
> [...]
> 
> > +	reg_dsi_touch: regulator-touch {
> > +		compatible = "regulator-fixed";
> > +		regulator-name = "rpi-touch";
> > +		regulator-min-microvolt = <5500000>;
> > +		regulator-max-microvolt = <5500000>;
> > +		gpio = <&expander3 5 GPIO_ACTIVE_HIGH>;
> > +		enable-active-high;
> > +		regulator-always-on;
> > +	};
> 
> Does this need to be always-on? There's clearly a consumer for it
> 
> Konrad

No, I'll remove regulator-always-on in next revision.

Re: [PATCH v2 1/2] arm64: dts: qcom: monaco-evk: Add Raspberry Pi 7-inch DSI panel overlay

[Shashank Maurya]

On Wed, Sep 09, 2026 at 04:50:40PM +0200, Konrad Dybcio wrote:
> On 9/7/26 8:33 AM, Shashank Maurya wrote:
> > Add a DT overlay for the Raspberry Pi 7" DSI touchscreen panel on
> > Monaco EVK, using mdss_dsi0 with 2 data lanes and the panel MCU on
> > I2C8.
> > 
> > Signed-off-by: Shashank Maurya <shashank.maurya@oss.qualcomm.com>
> > ---
> 
> [...]
> 
> > +&i2c8 {
> > +	qcom,load-firmware;
> > +	qcom,xfer-mode = <1>;
> 
> This property is undocumented and unconsumed
> 
> Konrad

We will remove this in next revision.