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Tue, 01 Sep 2026 02:48:41 -0700 (PDT) From: Abhishek Thomas Varghese Date: Tue, 01 Sep 2026 15:18:24 +0530 Subject: [PATCH v2] arm64: dts: qcom: talos: Add RPi Touch Display 2 5-inch overlay Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260901-talos-rpi-touch-display-v2-1-40f0e92b2071@gmail.com> X-B4-Tracking: v=1; b=H4sIAGiflmoC/3WNywqDMBBFf0Vm3SlJwJh21f8oLkIeZkCNJKlUx H9vKnTZ5Tlwz90hu0Quw73ZIbmVMsW5grg0YIKeB4dkK4NgQjIlJBY9xoxpISzxZQJaysuoN/T CK9MqJhizUNdLcp7eZ/nZVw6US0zbebTyr/01u7/NlSPHG+cda72TVtrHMGkaryZO0B/H8QH0c WzkvgAAAA== X-Change-ID: 20260826-talos-rpi-touch-display-f2f8c580200d To: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Abhishek Thomas Varghese X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1788256118; l=4128; i=tessolveupstream@gmail.com; s=20260826; h=from:subject:message-id; bh=iGT1FRX7jJCP3NO1p/Q2RKrJIpvEFGaB8Y7gkSH6xcA=; b=mL3q3lemYNFfjz0l03jaA/upr/e/tAO9wKyew3EKEMoK2ybb5C0vOdMIJaqLsdgp1LXWSRExZ Oz1oFUHtv2WBPlLCmk2qF0MrgbkQ9DqouvfgrMVfn6RrbfmNkQN4gW9 X-Developer-Key: i=tessolveupstream@gmail.com; a=ed25519; pk=0KMY9Olg1jw9bWLd5hZXnm7zZLgGk5yq+WqoY7YLkzY= Add a DT overlay to connect the Raspberry Pi Touch Display 2 5-inch panel to DSI0 on the Qualcomm IQ615/QCS615 EVK. The overlay describes the display controller, panel, touch controller, power supplies, and backlight. Disable the ADV7511 bridge to avoid a conflicting device on DSI virtual channel 0. Display output, touch input, backlight control, and concurrent DisplayPort operation have been tested. Signed-off-by: Abhishek Thomas Varghese Reviewed-by: Abel Vesa Reviewed-by: Konrad Dybcio --- Changes in v2: - Reference the existing hdmi_bridge node by label. - Add blank lines before status properties consistently. - Link to v1: https://lore.kernel.org/r/20260827-talos-rpi-touch-display-v1= -1-911705fe6d6d@gmail.com --- arch/arm64/boot/dts/qcom/Makefile | 3 + .../boot/dts/qcom/talos-evk-rpi-display-2-5in.dtso | 88 ++++++++++++++++++= ++++ 2 files changed, 91 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/M= akefile index 1c86e7e98f55d539f5292816ce06c9a46bd4904c..7fbf79f65ecb8283e572554838c= 044d24298d360 100644 --- a/arch/arm64/boot/dts/qcom/Makefile +++ b/arch/arm64/boot/dts/qcom/Makefile @@ -421,6 +421,9 @@ dtb-$(CONFIG_ARCH_QCOM) +=3D talos-evk-camera-imx577.dtb talos-evk-lvds-auo,g133han01-dtbs :=3D \ talos-evk.dtb talos-evk-lvds-auo,g133han01.dtbo dtb-$(CONFIG_ARCH_QCOM) +=3D talos-evk-lvds-auo,g133han01.dtb +talos-evk-rpi-display-2-5in-dtbs :=3D \ + talos-evk.dtb talos-evk-rpi-display-2-5in.dtbo +dtb-$(CONFIG_ARCH_QCOM) +=3D talos-evk-rpi-display-2-5in.dtb x1e001de-devkit-el2-dtbs :=3D x1e001de-devkit.dtb x1-el2.dtbo dtb-$(CONFIG_ARCH_QCOM) +=3D x1e001de-devkit.dtb x1e001de-devkit-el2.dtb x1e78100-lenovo-thinkpad-t14s-el2-dtbs :=3D x1e78100-lenovo-thinkpad-t14s.= dtb x1-el2.dtbo diff --git a/arch/arm64/boot/dts/qcom/talos-evk-rpi-display-2-5in.dtso b/ar= ch/arm64/boot/dts/qcom/talos-evk-rpi-display-2-5in.dtso new file mode 100644 index 0000000000000000000000000000000000000000..e49da096d9e38476373f8b10f0f= b5bec994949a5 --- /dev/null +++ b/arch/arm64/boot/dts/qcom/talos-evk-rpi-display-2-5in.dtso @@ -0,0 +1,88 @@ +// SPDX-License-Identifier: BSD-3-Clause +/* + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ +/dts-v1/; +/plugin/; + +#include + +&{/} { + display_bl: backlight { + compatible =3D "pwm-backlight"; + pwms =3D <&mcu 0 255 0>; + }; + + reg_display: regulator-display { + compatible =3D "regulator-fixed"; + regulator-name =3D "rpi-display"; + regulator-min-microvolt =3D <5000000>; + regulator-max-microvolt =3D <5000000>; + }; + + reg_dsi_touch: regulator-dsi-touch { + compatible =3D "regulator-fixed"; + gpio =3D <&mcu 1 GPIO_ACTIVE_HIGH>; + regulator-name =3D "rpi-touch"; + regulator-min-microvolt =3D <3300000>; + regulator-max-microvolt =3D <3300000>; + startup-delay-us =3D <50000>; + enable-active-high; + }; +}; + +&hdmi_bridge { + status =3D "disabled"; +}; + +&i2c1 { + clock-frequency =3D <400000>; + + status =3D "okay"; + + #address-cells =3D <1>; + #size-cells =3D <0>; + + mcu: gpio@45 { + compatible =3D "raspberrypi,touchscreen-panel-regulator-v2"; + reg =3D <0x45>; + gpio-controller; + #gpio-cells =3D <2>; + #pwm-cells =3D <3>; + }; + + touchscreen@5d { + compatible =3D "goodix,gt911"; + reg =3D <0x5d>; + AVDD28-supply =3D <®_dsi_touch>; + touchscreen-size-x =3D <720>; + touchscreen-size-y =3D <1280>; + }; +}; + +&mdss_dsi0 { + #address-cells =3D <1>; + #size-cells =3D <0>; + + status =3D "okay"; + + panel: panel@0 { + compatible =3D "raspberrypi,dsi-5inch", "ilitek,ili9881c"; + reg =3D <0>; + + backlight =3D <&display_bl>; + power-supply =3D <®_display>; + reset-gpios =3D <&mcu 0 GPIO_ACTIVE_LOW>; + + port { + panel_in: endpoint { + remote-endpoint =3D <&mdss_dsi0_out>; + }; + }; + }; +}; + +&mdss_dsi0_out { + remote-endpoint =3D <&panel_in>; + data-lanes =3D <0 1>; +}; --- base-commit: 6a746cd265aed59107ebdaa9ce039bb832922969 change-id: 20260826-talos-rpi-touch-display-f2f8c580200d Best regards, --=20 Abhishek Thomas Varghese