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[125.227.154.99]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-823186467basm10495006b3a.10.2026.01.26.18.57.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Jan 2026 18:57:48 -0800 (PST) From: Wig Cheng To: Shawn Guo , Sascha Hauer Cc: Pengutronix Kernel Team , Fabio Estevam , Rob Herring , Krzysztof Kozlowski , Conor Dooley , zaq14760@gmail.com, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Wig Cheng Subject: [PATCH] arm64: dts: freescale: add pixpaper display overlay for i.MX93 FRDM Date: Tue, 27 Jan 2026 10:57:40 +0800 Message-ID: <20260127025740.2601841-1-onlywig@gmail.com> X-Mailer: git-send-email 2.43.0 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 device tree overlay to support the MayQueen PixPaper e-paper display on the NXP i.MX93 FRDM board. The display is connected via LPSPI3 interface and uses GPIO pins for reset, busy and DC control. The overlay configures: - LPSPI3 pinmux for SPI communication (MOSI, MISO, CLK, CE0) - PixPaper display device with proper GPIO assignments - SPI frequency set to 5MHz for stable operation This enables support for the Open-EP Community pixpaper-213-c module on the NXP i.MX93 platform. Signed-off-by: Wig Cheng Reviewed-by: Daniel Baluta --- arch/arm64/boot/dts/freescale/Makefile | 3 ++ .../freescale/imx93-11x11-frdm-pixpaper.dtso | 51 +++++++++++++++++++ 2 files changed, 54 insertions(+) create mode 100644 arch/arm64/boot/dts/freescale/imx93-11x11-frdm-pixpaper= .dtso diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/f= reescale/Makefile index ce8f937c2315..fedd3552b577 100644 --- a/arch/arm64/boot/dts/freescale/Makefile +++ b/arch/arm64/boot/dts/freescale/Makefile @@ -403,6 +403,9 @@ dtb-$(CONFIG_ARCH_MXC) +=3D imx93-kontron-bl-osm-s.dtb dtb-$(CONFIG_ARCH_MXC) +=3D imx93-phyboard-nash.dtb dtb-$(CONFIG_ARCH_MXC) +=3D imx93-phyboard-segin.dtb =20 +imx93-11x11-frdm-pixpaper-dtbs +=3D imx93-11x11-frdm.dtb imx93-11x11-frdm-= pixpaper.dtbo +dtb-$(CONFIG_ARCH_MXC) +=3D imx93-11x11-frdm-pixpaper.dtb + imx93-phyboard-nash-jtag-dtbs +=3D imx93-phyboard-nash.dtb imx93-phyboard-= nash-jtag.dtbo imx93-phyboard-nash-peb-wlbt-07-dtbs +=3D imx93-phyboard-nash.dtb imx93-ph= yboard-nash-peb-wlbt-07.dtbo imx93-phyboard-nash-pwm-fan-dtbs +=3D imx93-phyboard-nash.dtb imx93-phyboa= rd-nash-pwm-fan.dtbo diff --git a/arch/arm64/boot/dts/freescale/imx93-11x11-frdm-pixpaper.dtso b= /arch/arm64/boot/dts/freescale/imx93-11x11-frdm-pixpaper.dtso new file mode 100644 index 000000000000..38e0c5dd82f9 --- /dev/null +++ b/arch/arm64/boot/dts/freescale/imx93-11x11-frdm-pixpaper.dtso @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Device Tree Overlay for Mayqueen (Open-EP Community) pixpaper display + * support on NXP FRDM i.MX 93 Development Board + * + * Copyright (C) 2026 Wig Cheng + */ + +#include +#include "imx93-pinfunc.h" + +/dts-v1/; +/plugin/; + +&iomuxc { + pinctrl_lpspi3: lpspi3grp { + fsl,pins =3D < + MX93_PAD_GPIO_IO08__GPIO2_IO08 0x3fe /* SPI3 CE0 */ + MX93_PAD_GPIO_IO09__LPSPI3_SIN 0x3fe /* SPI3 MISO */ + MX93_PAD_GPIO_IO10__LPSPI3_SOUT 0x3fe /* SPI3 MOSI */ + MX93_PAD_GPIO_IO11__LPSPI3_SCK 0x3fe /* SPI3 CLK*/ + >; + }; + + pinctrl_epd_ctrl: epdctrlgrp { + fsl,pins =3D < + MX93_PAD_GPIO_IO05__GPIO2_IO05 0x31e /* DC pin */ + MX93_PAD_GPIO_IO06__GPIO2_IO06 0x31e /* RESET pin */ + MX93_PAD_GPIO_IO26__GPIO2_IO26 0x31e /* BUSY pin */ + >; + }; +}; + +&lpspi3 { + #address-cells =3D <1>; + #size-cells =3D <0>; + fsl,spi-num-chipselects =3D <1>; + pinctrl-names =3D "default"; + pinctrl-0 =3D <&pinctrl_lpspi3>, <&pinctrl_epd_ctrl>; + cs-gpios =3D <&gpio2 8 GPIO_ACTIVE_LOW>; + status =3D "okay"; + + display@0 { + compatible =3D "mayqueen,pixpaper"; + reg =3D <0>; + spi-max-frequency =3D <5000000>; + reset-gpios =3D <&gpio2 6 GPIO_ACTIVE_HIGH>; + dc-gpios =3D <&gpio2 5 GPIO_ACTIVE_HIGH>; + busy-gpios =3D <&gpio2 26 GPIO_ACTIVE_HIGH>; + }; +}; --=20 2.43.0