[PATCH v6 6/7] arm64: dts: imx8mm: imx8mp: Add FIO1 DTOs for Data Modul i.MX8M Mini and Plus eDM SBC
From: Marek Vasut <hidden>
Date: 2026-07-27 19:53:28
Also in:
imx, linux-devicetree, lkml
Subsystem:
arm/freescale imx / mxc arm architecture, the rest · Maintainers:
Frank Li, Sascha Hauer, Linus Torvalds
Add DT overlay for feature connector expansion module eDM-MOD-iMX8Mm-FIO1
providing additional UARTs, CAN, PWM Beeper, I2C, SPI and GPIO breakout.
This adapter can be optionally populated onto the eDM SBC.
Signed-off-by: Marek Vasut <redacted>
---
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Frank Li <Frank.Li@nxp.com>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Rob Herring <robh@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: devicetree@vger.kernel.org
Cc: imx@lists.linux.dev
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
V2: Deduplicate the DTOs further
V3: New patch split from the original megapatch
V4: Rebase on next-20260703
V5: No change
V6: Move compatible and reg properties to the beginning of gpio_feature: io-expander@20 { } node
---
arch/arm64/boot/dts/freescale/Makefile | 12 ++++
...l-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtsi | 69 +++++++++++++++++++
...l-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtso | 59 ++++++++++++++++
...l-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtso | 46 +++++++++++++
4 files changed, 186 insertions(+)
create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtsi
create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtso
create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtso
diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 0196696d9128f..3b3c73a430ed1 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile@@ -124,6 +124,10 @@ imx8mm-data-modul-edm-sbc-overlay-cm4-dtbs := \ imx8mm-data-modul-edm-sbc.dtb \ imx8mm-data-modul-edm-sbc-overlay-cm4.dtbo +imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1-dtbs := \ + imx8mm-data-modul-edm-sbc.dtb \ + imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtbo + imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi-dtbs := \ imx8mm-data-modul-edm-sbc.dtb \ imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtbo
@@ -163,6 +167,8 @@ imx8mm-data-modul-edm-sbc-overlay-edm-sbc-imx8mm-rev900-dtbs := \ dtb-$(CONFIG_ARCH_MXC) += imx8mm-data-modul-edm-sbc.dtb \ imx8mm-data-modul-edm-sbc-overlay-cm4.dtb \ imx8mm-data-modul-edm-sbc-overlay-cm4.dtbo \ + imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtb \ + imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtbo \ imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtb \ imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtbo \ imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g070y2-l01.dtb \
@@ -312,6 +318,10 @@ imx8mp-data-modul-edm-sbc-overlay-cm7-dtbs := \ imx8mp-data-modul-edm-sbc.dtb \ imx8mp-data-modul-edm-sbc-overlay-cm7.dtbo +imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1-dtbs := \ + imx8mp-data-modul-edm-sbc.dtb \ + imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtbo + imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi-dtbs := \ imx8mp-data-modul-edm-sbc.dtb \ imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtbo
@@ -393,6 +403,8 @@ imx8mp-data-modul-edm-sbc-overlay-edm-sbc-imx8mp-rev902-dtbs := \ dtb-$(CONFIG_ARCH_MXC) += imx8mp-data-modul-edm-sbc.dtb \ imx8mp-data-modul-edm-sbc-overlay-cm7.dtb \ imx8mp-data-modul-edm-sbc-overlay-cm7.dtbo \ + imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtb \ + imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtbo \ imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtb \ imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-hdmi.dtbo \ imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-lvds-g070y2-l01.dtb \
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtsi
new file mode 100644
index 0000000000000..905db21d57c21
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtsi@@ -0,0 +1,69 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright 2026 Marek Vasut + */ + +#include <dt-bindings/gpio/gpio.h> +#include <dt-bindings/interrupt-controller/arm-gic.h> + +&{/} { + can_osc: can-osc { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <20000000>; + }; +}; + +&ecspi2 { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + can_fio: can@0 { + compatible = "microchip,mcp2515"; + reg = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_can>; + clocks = <&can_osc>; + spi-max-frequency = <5000000>; + }; +}; + +&i2c_feature { /* Feature connector I2C */ + #address-cells = <1>; + #size-cells = <0>; + + gpio_feature: io-expander@20 { + compatible = "nxp,pca9554"; + reg = <0x20>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_gpio_expander>; + #gpio-cells = <2>; + gpio-controller; + #interrupt-cells = <2>; + interrupt-controller; + interrupt-parent = <&gpio4>; + interrupts = <27 IRQ_TYPE_LEVEL_LOW>; + gpio-line-names = + "GPIO1_output", "GPIO1_input", + "GPIO2_output", "GPIO2_input", + "GPIO3_output", "GPIO3_input", + "PCA9511A_READY", ""; + }; + + eeprom@50 { + compatible = "atmel,24c32"; + reg = <0x50>; + pagesize = <32>; + }; +}; + +&uart1 { /* J500/J501 */ + status = "okay"; +}; + +&uart2 { /* RS485 J302/J303 */ + linux,rs485-enabled-at-boot-time; + uart-has-rtscts; + status = "okay"; +};
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtso b/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtso
new file mode 100644
index 0000000000000..ad410db5f5b76
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtso@@ -0,0 +1,59 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright 2022-2026 Marek Vasut + */ +/dts-v1/; +/plugin/; + +#include "imx8mm-pinfunc.h" +#include "imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtsi" + +&{/} { + beeper { + compatible = "pwm-beeper"; + beeper-hz = <1000>; + pwms = <&pwm3 0 250000 0>; + }; +}; + +&can_fio { + interrupts-extended = <&gpio4 25 IRQ_TYPE_LEVEL_LOW>; +}; + +&iomuxc { + pinctrl_can: can-feature-grp { + fsl,pins = < + /* CAN_INT# */ + MX8MM_IOMUXC_SAI2_TXC_GPIO4_IO25 0x400000d6 + /* CAN_RST# */ + MX8MM_IOMUXC_SAI2_TXD0_GPIO4_IO26 0x6 + >; + }; + + pinctrl_gpio_expander: gpio-expander-feature-grp { + fsl,pins = < + /* GPIO4_IO27 */ + MX8MM_IOMUXC_SAI2_MCLK_GPIO4_IO27 0x6 + >; + }; + + pinctrl_pwm3: pwm3-buzzer-feature-grp { + fsl,pins = < + /* Buzzer PWM output */ + MX8MM_IOMUXC_SPDIF_TX_PWM3_OUT 0x100 + >; + }; +}; + +&pinctrl_hog_feature { + fsl,pins = < + /* GPIO5_IO04 */ + MX8MM_IOMUXC_SPDIF_RX_GPIO5_IO4 0x6 + >; +}; + +&pwm3 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pwm3>; + status = "okay"; +};
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtso b/arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtso
new file mode 100644
index 0000000000000..0eccb7f7c0a8c
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtso@@ -0,0 +1,46 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright 2022-2026 Marek Vasut + */ +/dts-v1/; +/plugin/; + +#include "imx8mp-pinfunc.h" +#include "imx8mm-data-modul-edm-sbc-overlay-edm-mod-imx8mm-fio1.dtsi" + +&can_fio { + interrupts-extended = <&gpio2 10 IRQ_TYPE_LEVEL_LOW>; +}; + +&iomuxc { + pinctrl_can: can-feature-grp { + fsl,pins = < + /* CAN_INT# */ + MX8MP_IOMUXC_SD1_RESET_B__GPIO2_IO10 0x400000d6 + >; + }; + + pinctrl_gpio_expander: gpio-expander-feature-grp { + fsl,pins = < + /* GPIO4_IO27 */ + MX8MP_IOMUXC_SAI2_MCLK__GPIO4_IO27 0x6 + >; + }; +}; + +&pinctrl_sai2 { + fsl,pins = < + MX8MP_IOMUXC_SAI2_TXFS__AUDIOMIX_SAI2_TX_SYNC 0xd6 + MX8MP_IOMUXC_SAI2_TXD0__AUDIOMIX_SAI2_TX_DATA00 0xd6 + MX8MP_IOMUXC_SAI2_TXC__AUDIOMIX_SAI2_TX_BCLK 0xd6 + >; +}; + +&pinctrl_hog_feature { + fsl,pins = < + /* GPIO5_IO03 */ + MX8MP_IOMUXC_GPIO1_IO07__GPIO1_IO07 0x40000006 + /* GPIO5_IO04 */ + MX8MP_IOMUXC_GPIO1_IO08__GPIO1_IO08 0x40000006 + >; +};
--
2.53.0