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[125.227.154.99]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c6427da845csm2621521a12.12.2026.01.28.07.55.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 28 Jan 2026 07:55:39 -0800 (PST) From: Wig Cheng To: shawnguo@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org Cc: s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, zaq14760@gmail.com, Wig Cheng Subject: [PATCH v3 1/1] arm64: dts: freescale: add pixpaper display overlay for i.MX93 FRDM Date: Wed, 28 Jan 2026 23:55:29 +0800 Message-ID: <20260128155529.3699599-2-onlywig@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260128155529.3699599-1-onlywig@gmail.com> References: <20260127025740.2601841-1-onlywig@gmail.com> <20260128155529.3699599-1-onlywig@gmail.com> Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 Enable Open-EP Community pixpaper-213-c support on NXP i.MX93. Signed-off-by: Wig Cheng --- arch/arm64/boot/dts/freescale/Makefile | 4 ++ .../freescale/imx93-11x11-frdm-pixpaper.dtso | 51 +++++++++++++++++++ 2 files changed, 55 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/freescale/Makefile index ce8f937c2315..c2727f8061e2 100644 --- a/arch/arm64/boot/dts/freescale/Makefile +++ b/arch/arm64/boot/dts/freescale/Makefile @@ -398,6 +398,10 @@ dtb-$(CONFIG_ARCH_MXC) += imx93-9x9-qsb-i3c.dtb dtb-$(CONFIG_ARCH_MXC) += imx93-11x11-evk.dtb dtb-$(CONFIG_ARCH_MXC) += imx93-11x11-frdm.dtb + +imx93-11x11-frdm-pixpaper-dtbs += imx93-11x11-frdm.dtb imx93-11x11-frdm-pixpaper.dtbo +dtb-$(CONFIG_ARCH_MXC) += imx93-11x11-frdm-pixpaper.dtb + dtb-$(CONFIG_ARCH_MXC) += imx93-14x14-evk.dtb dtb-$(CONFIG_ARCH_MXC) += imx93-kontron-bl-osm-s.dtb dtb-$(CONFIG_ARCH_MXC) += imx93-phyboard-nash.dtb 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..a78284c10838 --- /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 = < + 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 = < + 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 = <1>; + #size-cells = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_lpspi3>, <&pinctrl_epd_ctrl>; + cs-gpios = <&gpio2 8 GPIO_ACTIVE_LOW>; + fsl,spi-num-chipselects = <1>; + status = "okay"; + + display@0 { + compatible = "mayqueen,pixpaper"; + reg = <0>; + spi-max-frequency = <5000000>; + reset-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>; + dc-gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>; + busy-gpios = <&gpio2 26 GPIO_ACTIVE_HIGH>; + }; +}; -- 2.43.0