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(xcpe-178-82-120-96.dyn.res.sunrise.net [178.82.120.96]) by mail11.truemail.it (Postfix) with ESMTPA id 823012299F; Wed, 15 Jul 2026 07:54:50 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dolcini.it; s=default; t=1784094890; bh=KdFKTeaKuS8bBA1sMGKHaFNH8keJ0yKoGDgEBm5PCyA=; h=From:To:Subject; b=RYUT3Iv42mMfHXYHg9YGEkHDkR11OTjZiooB5+/L4/F1inHpq4YeGNFaVQ3/9mIFb eDi+9wRU/sXUYB8lgMcdnT4IvqBdLhPG0EvRWrTsIa9jRhyNoT8ghGlUktNoa8IB4i /4fRnrLSRQELViO3LX0UaNUTpI/k/KKmdGGr9erxTbZ6iO3FittfiHcOHiT76dmPHl WJNKZgFNU8/za90Xs3ewmrsl2wivw5usbxtTc18O0zPvOaSE29V+fADTKOtjswTQqm jzMdxkm9/FCdPYK6PC1nuooporip9jgV2AGnQKF/ER4yRTNRBRCRBL8PaWIut9Qu6I Lsm0w/9643XAA== From: Francesco Dolcini To: Nishanth Menon , Vignesh Raghavendra , Tero Kristo , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Francesco Dolcini , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] arm64: dts: ti: k3-am62-verdin: Add RPi Touch Display 2 7-inch Date: Wed, 15 Jul 2026 07:54:45 +0200 Message-ID: <20260715055446.31139-1-francesco@dolcini.it> X-Mailer: git-send-email 2.47.3 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260714_225455_645871_58144203 X-CRM114-Status: GOOD ( 11.97 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Francesco Dolcini Add a device tree overlay for the Raspberry Pi Touch Display 2 7" on the Verdin DSI_1 interface. Link: https://www.raspberrypi.com/products/touch-display-2/ Signed-off-by: Francesco Dolcini --- v2: remove data-lanes property, not required (2-lanes are coming from the dsi panel driver) and invalid (schema validation failure). v1: https://lore.kernel.org/all/20260623114329.63142-1-francesco@dolcini.it/ --- arch/arm64/boot/dts/ti/Makefile | 5 + .../ti/k3-am625-verdin-rpi-display-2-7in.dtso | 101 ++++++++++++++++++ 2 files changed, 106 insertions(+) create mode 100644 arch/arm64/boot/dts/ti/k3-am625-verdin-rpi-display-2-7in.dtso diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile index 371f9a043fe5..f7f5448fcd84 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -48,6 +48,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-ov5640.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-panel-cap-touch-10inch-dsi.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-panel-cap-touch-10inch-lvds.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-panel-cap-touch-7inch-dsi.dtbo +dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-rpi-display-2-7in.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-uart4-mcu.dtbo dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dahlia-dsi-to-hdmi.dtb dtb-$(CONFIG_ARCH_K3) += k3-am625-verdin-wifi-dahlia-panel-cap-touch-10inch-dsi.dtb @@ -244,6 +245,9 @@ k3-am625-verdin-wifi-dev-ov5640-dtbs := k3-am625-verdin-wifi-dev.dtb \ k3-am625-verdin-wifi-dev-panel-cap-touch-7inch-dsi-dtbs := \ k3-am625-verdin-wifi-dev.dtb \ k3-am625-verdin-panel-cap-touch-7inch-dsi.dtbo +k3-am625-verdin-wifi-dev-rpi-display-2-7in-dtbs := \ + k3-am625-verdin-wifi-dev.dtb \ + k3-am625-verdin-rpi-display-2-7in.dtbo k3-am625-verdin-wifi-dev-uart4-mcu-dtbs := k3-am625-verdin-wifi-dev.dtb \ k3-am625-verdin-uart4-mcu.dtbo k3-am625-verdin-wifi-mallow-panel-cap-touch-10inch-lvds-dtbs := \ @@ -357,6 +361,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \ k3-am625-verdin-wifi-dev-ov5640-24mhz.dtb \ k3-am625-verdin-wifi-dev-ov5640.dtb \ k3-am625-verdin-wifi-dev-panel-cap-touch-7inch-dsi.dtb \ + k3-am625-verdin-wifi-dev-rpi-display-2-7in.dtb \ k3-am625-verdin-wifi-dev-uart4-mcu.dtb \ k3-am625-verdin-wifi-mallow-panel-cap-touch-10inch-lvds.dtb \ k3-am62-lp-sk-hdmi-audio.dtb \ diff --git a/arch/arm64/boot/dts/ti/k3-am625-verdin-rpi-display-2-7in.dtso b/arch/arm64/boot/dts/ti/k3-am625-verdin-rpi-display-2-7in.dtso new file mode 100644 index 000000000000..8366bebbd5d2 --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am625-verdin-rpi-display-2-7in.dtso @@ -0,0 +1,101 @@ +// SPDX-License-Identifier: GPL-2.0-or-later OR MIT +/* + * Copyright (c) Toradex + * + * Raspberry Pi Touch Display 2 7" on Verdin DSI_1 and I2C_2_DSI + * + * https://www.raspberrypi.com/products/touch-display-2/ + */ + +/dts-v1/; +/plugin/; + +#include + +&{/} { + backlight_rpi: backlight-rpi-display { + compatible = "pwm-backlight"; + brightness-levels = <0 31>; + default-brightness-level = <15>; + num-interpolated-steps = <31>; + pwms = <&mcu_display_rpi 0 200000 0>; + }; + + reg_display_rpi: regulator-rpi-display { + compatible = "regulator-fixed"; + regulator-max-microvolt = <5000000>; + regulator-min-microvolt = <5000000>; + regulator-name = "rpi-display"; + }; + + reg_display_rpi_touch: regulator-rpi-display-touch { + compatible = "regulator-fixed"; + gpio = <&mcu_display_rpi 1 GPIO_ACTIVE_HIGH>; + enable-active-high; + regulator-max-microvolt = <3300000>; + regulator-min-microvolt = <3300000>; + regulator-name = "rpi-display-touch"; + startup-delay-us = <50000>; + }; + +}; + +/* Verdin I2C_2_DSI */ +&main_i2c2 { + #address-cells = <1>; + #size-cells = <0>; + + mcu_display_rpi: regulator@45 { + compatible = "raspberrypi,touchscreen-panel-regulator-v2"; + reg = <0x45>; + #gpio-cells = <2>; + #pwm-cells = <3>; + gpio-controller; + }; + + touchscreen@5d { + compatible = "goodix,gt911"; + reg = <0x5d>; + AVDD28-supply = <®_display_rpi_touch>; + touchscreen-size-x = <720>; + touchscreen-size-y = <1280>; + }; +}; + +&dsi_bridge { + #address-cells = <1>; + #size-cells = <0>; + + status = "okay"; + + panel@0 { + compatible = "raspberrypi,dsi-7inch", "ilitek,ili9881c"; + reg = <0>; + backlight = <&backlight_rpi>; + power-supply = <®_display_rpi>; + reset-gpios = <&mcu_display_rpi 0 GPIO_ACTIVE_LOW>; + + port { + dsi_panel_in: endpoint { + remote-endpoint = <&dsi_bridge_out>; + }; + }; + }; +}; + +&dsi_bridge_ports { + #address-cells = <1>; + #size-cells = <0>; + + port@1 { + reg = <1>; + + dsi_bridge_out: endpoint { + remote-endpoint = <&dsi_panel_in>; + }; + }; +}; + +&dss { + status = "okay"; +}; -- 2.47.3