linux-kernel - Re: [PATCH v2 1/1] arm64: dts: freescale: add pixpaper display overlay for i.MX93 FRDM

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Message-ID: <aXmsbbt9T5ZRGtES@shlinux89>
Date: Wed, 28 Jan 2026 14:27:57 +0800
From: Peng Fan <peng.fan@....nxp.com>
To: Wig Cheng <onlywig@...il.com>
Cc: shawnguo@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
	conor+dt@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
	festevam@...il.com, devicetree@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	zaq14760@...il.com
Subject: Re: [PATCH v2 1/1] arm64: dts: freescale: add pixpaper display
 overlay for i.MX93 FRDM

On Wed, Jan 28, 2026 at 01:05:49PM +0800, Wig Cheng wrote:
>Enable Open-EP Community pixpaper-213-c support on NXP i.MX93.
>
>Signed-off-by: Wig Cheng <onlywig@...il.com>
>---
> 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..1111503b08af
>--- /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 <onlywig@...il.com>
>+ */
>+
>+#include <dt-bindings/gpio/gpio.h>
>+#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>;

The above two properties are in imx93_91_common.dtsi lpspi3 node, no need to
duplicate them.

Regards
Peng

>+	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
>