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(xcpe-178-82-167-143.dyn.res.sunrise.net [178.82.167.143]) by mail11.truemail.it (Postfix) with ESMTPA id 29B6426662; Mon, 9 Nov 2026 16:57:58 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dolcini.it; s=default; t=1794239878; bh=r3N87t7rpgxXMLe+tyGoCO5FBIgPlIswbKigTqDeBMY=; h=From:To:Subject; b=wKvuv12Lgl0Lp7WVZrkuWV0q+WgXOfjxmJMsjTpLytkKqdbcUl/kMpoVFSyfhxlDd 9gtu+weUURdk+Fh8084MwFYRd9oMIaUS0HD/3qiK/Mr02rmRLGfbhLzoWUJwRJjpK4 lmY9f6yGi7T9OWGQ/RLiK73WuC7BgKOjFESkd+86Wm8dFImN3B6t03dT9P5HbjwGug RZdDH76en8sDjcg7b3CMAceUGkR/jfnxy0LVH0502kgUK993IRiwddwvXGBU7N7VXC gKKK1DDfR/iVxNj9wxg3Pz2u+1+BbYpKhLdcQQytGDKowFhjns4JDKgsNH6+N7/uEu cgEL6Nxvm5sKw== From: Francesco Dolcini To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Francesco Dolcini , Kiryl Shutsemau , Rick Edgecombe , Dave Hansen Cc: devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-bsp@toradex.com, x86@kernel.org, linux-coco@lists.linux.dev, kvm@vger.kernel.org Subject: [PATCH v2 0/8] ARM: dts: imx6ull-colibri-emmc: Add DPI display and VGA overlays Date: Mon, 9 Nov 2026 16:57:40 +0100 Message-ID: <20261109155751.475875-1-francesco@dolcini.it> X-Mailer: git-send-email 2.47.3 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Francesco Dolcini Add device tree overlays for the Toradex display accessories on the Colibri iMX6ULL eMMC parallel RGB LCD interface, mirroring what was recently merged for the Colibri iMX7 eMMC: - Capacitive Touch Display 7" Parallel, touch on the 10-way Capacitive Touch Interface connector (Iris v2, Aster) - Capacitive Touch Display 7" Parallel, touch through the Capacitive Touch Adapter (Eval v3) - Resistive Touch Display 7" Parallel (Eval v3) - VGA output through a non-programmable video DAC (Aster, Eval v3, Iris, Iris v2) The panel, backlight and LCDIF part of each overlay is identical between the two modules, both using the same LCDIF binding and labels. Instead of duplicating it, each patch moves that part out of the corresponding Colibri iMX7 eMMC overlay into a dtsi shared by the two modules and includes it from both. Only the Atmel MaxTouch wiring, the conflicting PWM channels and the BL_ON pinctrl and GPIO driving the VGA DAC power-save input stay in the SoC specific overlays. The shared files follow the imx6ul-imx6ull-*.dtsi naming already used in the same directory. The overlay names are the Toradex product names of the accessories, and a product name is unique only together with its vendor. Following the discussion on the Apalis iMX6 overlays [1], the Toradex accessories get a "tdx" vendor prefix, the same way third-party accessories on Toradex boards already carry theirs, e.g. "rpi" in k3-am625-verdin-rpi-display-2-7in.dtso. Patches 1 and 2 are fixes and come first, so they can be backported without the rename. Patch 1 (from Emanuele) drives the VGA DAC power-save input through the BL_ON signal, without it the Eval and Aster carrier boards show a black image. Patch 2 adds the Colibri iMX7 eMMC touch adapter and resistive touch .dtbo to dtb-y, as they were built only as a dependency of the combined DTBs and never shipped by dtbs_install. Patch 3 adds the tdx vendor prefix to the existing Colibri iMX7 eMMC display overlays. Patch 4 aligns the Colibri iMX6ULL backlight brightness levels with the Colibri iMX7 ones, the LED driver of the 7" displays turns off below roughly 15% duty cycle and only the three highest of the current levels produced a visible image. [1] https://lore.kernel.org/all/20261026111149.GA46946@francesco-nb/ v2: - add patch 3, tdx vendor prefix for the Colibri iMX7 eMMC display overlays - add the tdx vendor prefix to the new Colibri iMX6ULL display overlays, the shared dtsi and the combined DTBs v1: https://lore.kernel.org/all/20261001174924.3831455-1-francesco@dolcini.it/ Emanuele Ghidoli (1): ARM: dts: imx7d-colibri-emmc: Enable the VGA DAC Francesco Dolcini (7): ARM: dts: imx7d-colibri-emmc: Add missing touch display overlays to dtb-y ARM: dts: imx7d-colibri-emmc: Add tdx vendor prefix to display overlays ARM: dts: imx6ull-colibri: Align backlight brightness levels with Colibri iMX7 ARM: dts: imx6ull-colibri-emmc: Add Toradex Capacitive Touch Display 7" Parallel ARM: dts: imx6ull-colibri-emmc: Add Toradex Capacitive Touch Display 7" Parallel with Touch Adapter ARM: dts: imx6ull-colibri-emmc: Add Toradex Resistive Touch Display 7" Parallel ARM: dts: imx6ull-colibri-emmc: Add VGA overlay arch/arm/boot/dts/nxp/imx/Makefile | 73 +++++++++++++++---- ...ap-touch-7inch-parallel-touch-adapter.dtso | 46 ++++++++++++ ...mc-tdx-panel-cap-touch-7inch-parallel.dtso | 31 ++++++++ ...mc-tdx-panel-res-touch-7inch-parallel.dtso | 16 ++++ .../dts/nxp/imx/imx6ull-colibri-emmc-vga.dtso | 24 ++++++ .../arm/boot/dts/nxp/imx/imx6ull-colibri.dtsi | 4 +- ...ri-tdx-panel-cap-touch-7inch-parallel.dtsi | 29 ++++++++ ...i-tdx-panel-res-touch-7inch-parallel.dtsi} | 8 +- .../dts/nxp/imx/imx6ull-imx7-colibri-vga.dtsi | 61 ++++++++++++++++ ...p-touch-7inch-parallel-touch-adapter.dtso} | 16 +--- ...c-tdx-panel-cap-touch-7inch-parallel.dtso} | 16 +--- ...mc-tdx-panel-res-touch-7inch-parallel.dtso | 16 ++++ .../dts/nxp/imx/imx7d-colibri-emmc-vga.dtso | 49 ++----------- 13 files changed, 299 insertions(+), 90 deletions(-) create mode 100644 arch/arm/boot/dts/nxp/imx/imx6ull-colibri-emmc-tdx-panel-cap-touch-7inch-parallel-touch-adapter.dtso create mode 100644 arch/arm/boot/dts/nxp/imx/imx6ull-colibri-emmc-tdx-panel-cap-touch-7inch-parallel.dtso create mode 100644 arch/arm/boot/dts/nxp/imx/imx6ull-colibri-emmc-tdx-panel-res-touch-7inch-parallel.dtso create mode 100644 arch/arm/boot/dts/nxp/imx/imx6ull-colibri-emmc-vga.dtso create mode 100644 arch/arm/boot/dts/nxp/imx/imx6ull-imx7-colibri-tdx-panel-cap-touch-7inch-parallel.dtsi rename arch/arm/boot/dts/nxp/imx/{imx7d-colibri-emmc-panel-res-touch-7inch-parallel.dtso => imx6ull-imx7-colibri-tdx-panel-res-touch-7inch-parallel.dtsi} (77%) create mode 100644 arch/arm/boot/dts/nxp/imx/imx6ull-imx7-colibri-vga.dtsi rename arch/arm/boot/dts/nxp/imx/{imx7d-colibri-emmc-panel-cap-touch-7inch-parallel-touch-adapter.dtso => imx7d-colibri-emmc-tdx-panel-cap-touch-7inch-parallel-touch-adapter.dtso} (90%) rename arch/arm/boot/dts/nxp/imx/{imx7d-colibri-emmc-panel-cap-touch-7inch-parallel.dtso => imx7d-colibri-emmc-tdx-panel-cap-touch-7inch-parallel.dtso} (86%) create mode 100644 arch/arm/boot/dts/nxp/imx/imx7d-colibri-emmc-tdx-panel-res-touch-7inch-parallel.dtso -- 2.47.3