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Wed, 23 Sep 2026 08:24:41 -0700 (PDT) Received: from localhost.localdomain ([2001:b07:6474:ebbf:12f8:fcfa:728a:2514]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49fe0c446e1sm55582165e9.2.2026.09.23.08.24.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Sep 2026 08:24:41 -0700 (PDT) From: Dario Binacchi To: Alexandre Torgue , Maxime Coquelin Cc: linux-stm32@st-md-mailman.stormreply.com, francesco.utel@engicam.com, linux-arm-kernel@lists.infradead.org, linux-amarula@amarulasolutions.com, domenico.acri@engicam.com, devicetree@vger.kernel.org, Rob Herring , Marek Vasut , Conor Dooley , Krzysztof Kozlowski , michael@amarulasolutions.com, linux-kernel@vger.kernel.org, Dario Binacchi Subject: [PATCH 1/2] arm64: dts: st: move Engicam MicroGEA-STM32MP257D-RMM display to an overlay Date: Wed, 23 Sep 2026 17:23:47 +0200 Message-ID: <20260923152435.563925-2-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260923152435.563925-1-dario.binacchi@amarulasolutions.com> References: <20260923152435.563925-1-dario.binacchi@amarulasolutions.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The board is fitted with different displays depending on the product variant. Keep in the board dts only what is common to all variants and move the RK050HR345-CT106A RGB panel and its touchscreen to an overlay. Signed-off-by: Dario Binacchi --- arch/arm64/boot/dts/st/Makefile | 6 ++ ...icrogea-rmm-overlay-rk050hr345-ct106a.dtso | 69 +++++++++++++++++++ .../st/stm32mp257d-engicam-microgea-rmm.dts | 49 +------------ 3 files changed, 78 insertions(+), 46 deletions(-) create mode 100644 arch/arm64/boot/dts/st/stm32mp257d-engicam-microgea-rmm= -overlay-rk050hr345-ct106a.dtso diff --git a/arch/arm64/boot/dts/st/Makefile b/arch/arm64/boot/dts/st/Makef= ile index 6cbccfd50993..218ff7fdf576 100644 --- a/arch/arm64/boot/dts/st/Makefile +++ b/arch/arm64/boot/dts/st/Makefile @@ -1,7 +1,13 @@ # SPDX-License-Identifier: GPL-2.0-only +stm32mp257d-engicam-microgea-rmm-overlay-rk050hr345-ct106a-dtbs :=3D \ + stm32mp257d-engicam-microgea-rmm.dtb \ + stm32mp257d-engicam-microgea-rmm-overlay-rk050hr345-ct106a.dtbo + dtb-$(CONFIG_ARCH_STM32) +=3D \ stm32mp215f-dk.dtb \ stm32mp235f-dk.dtb \ stm32mp257d-engicam-microgea-rmm.dtb \ + stm32mp257d-engicam-microgea-rmm-overlay-rk050hr345-ct106a.dtb \ + stm32mp257d-engicam-microgea-rmm-overlay-rk050hr345-ct106a.dtbo \ stm32mp257f-dk.dtb \ stm32mp257f-ev1.dtb diff --git a/arch/arm64/boot/dts/st/stm32mp257d-engicam-microgea-rmm-overla= y-rk050hr345-ct106a.dtso b/arch/arm64/boot/dts/st/stm32mp257d-engicam-micro= gea-rmm-overlay-rk050hr345-ct106a.dtso new file mode 100644 index 000000000000..e64dd277ff09 --- /dev/null +++ b/arch/arm64/boot/dts/st/stm32mp257d-engicam-microgea-rmm-overlay-rk050= hr345-ct106a.dtso @@ -0,0 +1,69 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2026 Amarula Solutions, Dario Binacchi + * Copyright (C) 2026 Engicam srl + * + * Rocktech RK050HR345-CT106A 5" 480x854 RGB panel with EDT FT5306 + * I2C touchscreen controller. + */ + +/dts-v1/; +/plugin/; + +#include +#include + +&i2c1 { + pinctrl-names =3D "default", "sleep"; + pinctrl-0 =3D <&i2c1_pins_a>; + pinctrl-1 =3D <&i2c1_sleep_pins_a>; + i2c-scl-rising-time-ns =3D <185>; + i2c-scl-falling-time-ns =3D <20>; + #address-cells =3D <1>; + #size-cells =3D <0>; + status =3D "okay"; + + touchscreen@38 { + compatible =3D "edt,edt-ft5306"; + reg =3D <0x38>; + interrupt-parent =3D <&gpiob>; + interrupts =3D <0 IRQ_TYPE_EDGE_FALLING>; + reset-gpios =3D <&gpiod 1 GPIO_ACTIVE_LOW>; + touchscreen-size-x =3D <480>; + touchscreen-size-y =3D <854>; + }; +}; + +<dc { + pinctrl-names =3D "default", "sleep"; + pinctrl-0 =3D <<dc_pins_a>; + pinctrl-1 =3D <<dc_sleep_pins_a>; + status =3D "okay"; + + port { + ltdc_out: endpoint { + remote-endpoint =3D <&panel_in>; + }; + }; +}; + +&spi1 { + #address-cells =3D <1>; + #size-cells =3D <0>; + cs-gpios =3D <&gpioh 8 GPIO_ACTIVE_LOW>, <&gpioh 3 GPIO_ACTIVE_HIGH>; + + display@0 { + compatible =3D "rocktech,rk050hr345-ct106a", "ilitek,ili9806e"; + reg =3D <0>; + vdd-supply =3D <®_3v3>; + spi-max-frequency =3D <10000000>; + reset-gpios =3D <&gpiob 6 GPIO_ACTIVE_LOW>; + backlight =3D <&backlight>; + + port { + panel_in: endpoint { + remote-endpoint =3D <<dc_out>; + }; + }; + }; +}; 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 f5af0913bf1b..4b39b6c482d6 100644 --- a/arch/arm64/boot/dts/st/stm32mp257d-engicam-microgea-rmm.dts +++ b/arch/arm64/boot/dts/st/stm32mp257d-engicam-microgea-rmm.dts @@ -116,25 +116,9 @@ &arm_wdt { }; =20 &i2c1 { - pinctrl-names =3D "default", "sleep"; - pinctrl-0 =3D <&i2c1_pins_a>; - pinctrl-1 =3D <&i2c1_sleep_pins_a>; - i2c-scl-rising-time-ns =3D <185>; - i2c-scl-falling-time-ns =3D <20>; - status =3D "okay"; - /* spare dmas for other usage */ + /* dt overlays don't support /delete-property/ */ /delete-property/dmas; /delete-property/dma-names; - - touchscreen@38 { - compatible =3D "edt,edt-ft5306"; - reg =3D <0x38>; - interrupt-parent =3D <&gpiob>; - interrupts =3D <0 IRQ_TYPE_EDGE_FALLING>; - reset-gpios =3D <&gpiod 1 GPIO_ACTIVE_LOW>; - touchscreen-size-x =3D <480>; - touchscreen-size-y =3D <854>; - }; }; =20 &i2c2 { @@ -179,19 +163,6 @@ sgtl5000_rx_endpoint: endpoint@1 { }; }; =20 -<dc { - pinctrl-names =3D "default", "sleep"; - pinctrl-0 =3D <<dc_pins_a>; - pinctrl-1 =3D <<dc_sleep_pins_a>; - status =3D "okay"; - - port { - ltdc_out: endpoint { - remote-endpoint =3D <&panel_in>; - }; - }; -}; - &m_can1 { pinctrl-names =3D "default", "sleep"; pinctrl-0 =3D <&m_can1_pins_a>; @@ -257,23 +228,9 @@ &spi1 { pinctrl-1 =3D <&spi1_sleep_pins_a>; #address-cells =3D <1>; #size-cells =3D <0>; - cs-gpios =3D <&gpioh 8 GPIO_ACTIVE_LOW>, <&gpioh 3 GPIO_ACTIVE_HIGH>; + /* CS0 is reserved for the display fitted through overlay */ + cs-gpios =3D <0>, <&gpioh 3 GPIO_ACTIVE_HIGH>; status =3D "okay"; - - display: display@0 { - compatible =3D "rocktech,rk050hr345-ct106a", "ilitek,ili9806e"; - reg =3D <0>; - vdd-supply =3D <®_3v3>; - spi-max-frequency =3D <10000000>; 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Wed, 23 Sep 2026 08:24:42 -0700 (PDT) From: Dario Binacchi To: Alexandre Torgue , Maxime Coquelin Cc: linux-stm32@st-md-mailman.stormreply.com, francesco.utel@engicam.com, linux-arm-kernel@lists.infradead.org, linux-amarula@amarulasolutions.com, domenico.acri@engicam.com, devicetree@vger.kernel.org, Rob Herring , Marek Vasut , Conor Dooley , Krzysztof Kozlowski , michael@amarulasolutions.com, linux-kernel@vger.kernel.org, Dario Binacchi Subject: [PATCH 2/2] arm64: dts: st: add Engicam MicroGEA-STM32MP257D-RMM LVDS display overlay Date: Wed, 23 Sep 2026 17:23:48 +0200 Message-ID: <20260923152435.563925-3-dario.binacchi@amarulasolutions.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260923152435.563925-1-dario.binacchi@amarulasolutions.com> References: <20260923152435.563925-1-dario.binacchi@amarulasolutions.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 --- 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/Makef= ile 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 :=3D \ + stm32mp257d-engicam-microgea-rmm.dtb \ + stm32mp257d-engicam-microgea-rmm-overlay-am-1280800w8tzqw-t00h.dtbo + stm32mp257d-engicam-microgea-rmm-overlay-rk050hr345-ct106a-dtbs :=3D \ stm32mp257d-engicam-microgea-rmm.dtb \ stm32mp257d-engicam-microgea-rmm-overlay-rk050hr345-ct106a.dtbo @@ -7,6 +11,8 @@ dtb-$(CONFIG_ARCH_STM32) +=3D \ 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-overla= y-am-1280800w8tzqw-t00h.dtso b/arch/arm64/boot/dts/st/stm32mp257d-engicam-m= icrogea-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-12= 80800w8tzqw-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 =3D "ampire,am-1280800w8tzqw-t00h"; + backlight =3D <&backlight>; + power-supply =3D <®_3v3>; + + port { + panel_in: endpoint { + remote-endpoint =3D <&lvds_out>; + }; + }; + }; +}; + +&framebuffer { + clocks =3D <&rcc CK_BUS_LTDC>, <&rcc CK_KER_LTDC>, + <&rcc CK_BUS_LVDS>, <&rcc CK_KER_LVDSPHY>; +}; + +<dc { + status =3D "okay"; + + port { + ltdc_out: endpoint { + remote-endpoint =3D <&lvds_in>; + }; + }; +}; + +&lvds { + status =3D "okay"; + + ports { + #address-cells =3D <1>; + #size-cells =3D <0>; + + port@0 { + reg =3D <0>; + + lvds_in: endpoint { + remote-endpoint =3D <<dc_out>; + }; + }; + + port@1 { + reg =3D <1>; + + lvds_out: endpoint { + remote-endpoint =3D <&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 4b39b6c482d6..87d4bac1c89b 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 =3D <2>; ranges; =20 - framebuffer { + framebuffer: framebuffer { compatible =3D "simple-framebuffer"; clocks =3D <&rcc CK_BUS_LTDC>, <&rcc CK_KER_LTDC>; lcd-supply =3D <®_3v3>; --=20 2.43.0