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Wed, 23 Sep 2026 08:53:39 -0700 (PDT) Received: from localhost.localdomain ([2001:b07:6474:ebbf:12f8:fcfa:728a:2514]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49fde1d5f10sm81858555e9.8.2026.09.23.08.53.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Sep 2026 08:53:39 -0700 (PDT) From: Dario Binacchi To: Alexandre Torgue , Maxime Coquelin Cc: michael@amarulasolutions.com, domenico.acri@engicam.com, linux-arm-kernel@lists.infradead.org, Marek Vasut , francesco.utel@engicam.com, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, devicetree@vger.kernel.org, Conor Dooley , Rob Herring , Krzysztof Kozlowski , linux-amarula@amarulasolutions.com, Dario Binacchi Subject: [PATCH v2 2/2] arm64: dts: st: add Engicam MicroGEA-STM32MP257D-RMM LVDS display overlay Date: Wed, 23 Sep 2026 17:53:10 +0200 Message-ID: <20260923155333.610134-3-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260923155333.610134-1-dario.binacchi@amarulasolutions.com> References: <20260923155333.610134-1-dario.binacchi@amarulasolutions.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260923_165341_421764_5B960D30 X-CRM114-Status: GOOD ( 15.83 ) 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 Add an overlay for the variant fitted with the AM-1280800W8TZQW-T00H 10.1" 1280x800 LVDS panel. Its touchscreen is connected over USB, so there is no touchscreen node. Signed-off-by: Dario Binacchi --- (no changes since v1) arch/arm64/boot/dts/st/Makefile | 6 ++ ...gea-rmm-overlay-am-1280800w8tzqw-t00h.dtso | 67 +++++++++++++++++++ .../st/stm32mp257d-engicam-microgea-rmm.dts | 2 +- 3 files changed, 74 insertions(+), 1 deletion(-) create mode 100644 arch/arm64/boot/dts/st/stm32mp257d-engicam-microgea-rmm-overlay-am-1280800w8tzqw-t00h.dtso diff --git a/arch/arm64/boot/dts/st/Makefile b/arch/arm64/boot/dts/st/Makefile index 218ff7fdf576..7f657d2bd629 100644 --- a/arch/arm64/boot/dts/st/Makefile +++ b/arch/arm64/boot/dts/st/Makefile @@ -1,4 +1,8 @@ # SPDX-License-Identifier: GPL-2.0-only +stm32mp257d-engicam-microgea-rmm-overlay-am-1280800w8tzqw-t00h-dtbs := \ + stm32mp257d-engicam-microgea-rmm.dtb \ + stm32mp257d-engicam-microgea-rmm-overlay-am-1280800w8tzqw-t00h.dtbo + stm32mp257d-engicam-microgea-rmm-overlay-rk050hr345-ct106a-dtbs := \ stm32mp257d-engicam-microgea-rmm.dtb \ stm32mp257d-engicam-microgea-rmm-overlay-rk050hr345-ct106a.dtbo @@ -7,6 +11,8 @@ dtb-$(CONFIG_ARCH_STM32) += \ stm32mp215f-dk.dtb \ stm32mp235f-dk.dtb \ stm32mp257d-engicam-microgea-rmm.dtb \ + stm32mp257d-engicam-microgea-rmm-overlay-am-1280800w8tzqw-t00h.dtb \ + stm32mp257d-engicam-microgea-rmm-overlay-am-1280800w8tzqw-t00h.dtbo \ stm32mp257d-engicam-microgea-rmm-overlay-rk050hr345-ct106a.dtb \ stm32mp257d-engicam-microgea-rmm-overlay-rk050hr345-ct106a.dtbo \ stm32mp257f-dk.dtb \ diff --git a/arch/arm64/boot/dts/st/stm32mp257d-engicam-microgea-rmm-overlay-am-1280800w8tzqw-t00h.dtso b/arch/arm64/boot/dts/st/stm32mp257d-engicam-microgea-rmm-overlay-am-1280800w8tzqw-t00h.dtso new file mode 100644 index 000000000000..7655c1bf56b1 --- /dev/null +++ b/arch/arm64/boot/dts/st/stm32mp257d-engicam-microgea-rmm-overlay-am-1280800w8tzqw-t00h.dtso @@ -0,0 +1,67 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2026 Amarula Solutions, Dario Binacchi + * Copyright (C) 2026 Engicam srl + * + * Ampire AM-1280800W8TZQW-T00H 10.1" 1280x800 LVDS panel. Its touchscreen + * controller is connected over USB. + */ + +/dts-v1/; +/plugin/; + +#include + +&{/} { + panel-lvds { + compatible = "ampire,am-1280800w8tzqw-t00h"; + backlight = <&backlight>; + power-supply = <®_3v3>; + + port { + panel_in: endpoint { + remote-endpoint = <&lvds_out>; + }; + }; + }; +}; + +&framebuffer { + clocks = <&rcc CK_BUS_LTDC>, <&rcc CK_KER_LTDC>, + <&rcc CK_BUS_LVDS>, <&rcc CK_KER_LVDSPHY>; +}; + +<dc { + status = "okay"; + + port { + ltdc_out: endpoint { + remote-endpoint = <&lvds_in>; + }; + }; +}; + +&lvds { + status = "okay"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + lvds_in: endpoint { + remote-endpoint = <<dc_out>; + }; + }; + + port@1 { + reg = <1>; + + lvds_out: endpoint { + remote-endpoint = <&panel_in>; + }; + }; + }; +}; diff --git a/arch/arm64/boot/dts/st/stm32mp257d-engicam-microgea-rmm.dts b/arch/arm64/boot/dts/st/stm32mp257d-engicam-microgea-rmm.dts index faedddc2c914..96b7cb6b5bc1 100644 --- a/arch/arm64/boot/dts/st/stm32mp257d-engicam-microgea-rmm.dts +++ b/arch/arm64/boot/dts/st/stm32mp257d-engicam-microgea-rmm.dts @@ -43,7 +43,7 @@ chosen { #size-cells = <2>; ranges; - framebuffer { + framebuffer: framebuffer { compatible = "simple-framebuffer"; clocks = <&rcc CK_BUS_LTDC>, <&rcc CK_KER_LTDC>; lcd-supply = <®_3v3>; -- 2.43.0