[PATCH 01/12] arm64: dts: imx8mm-kontron: Add overlay for LTE extension board

[Frieder Schrempf <frieder@fris.de>]

From: Annette Kobou <annette.kobou@kontron.de>

This is an addon for the BL i.MX8MM that features an LTE
modem, a TPM module, some LEDs and a pushbutton.

Signed-off-by: Annette Kobou <annette.kobou@kontron.de>
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
---
 arch/arm64/boot/dts/freescale/Makefile        |   2 +
 .../dts/freescale/imx8mm-kontron-bl-lte.dtso  | 186 ++++++++++++++++++
 2 files changed, 188 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-kontron-bl-lte.dtso

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 0b473a23d1200..05d58ce3f6550 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -341,8 +341,10 @@ imx95-19x19-evk-pcie1-ep-dtbs += imx95-19x19-evk.dtb imx-pcie1-ep.dtbo
 dtb-$(CONFIG_ARCH_MXC) += imx95-19x19-evk-pcie0-ep.dtb imx95-19x19-evk-pcie1-ep.dtb
 
 imx8mm-kontron-dl-dtbs			:= imx8mm-kontron-bl.dtb imx8mm-kontron-dl.dtbo
+imx8mm-kontron-bl-lte-dtbs		:= imx8mm-kontron-bl.dtb imx8mm-kontron-bl-lte.dtbo
 
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-kontron-dl.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-kontron-bl-lte.dtb
 
 imx8mm-venice-gw72xx-0x-imx219-dtbs	:= imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-imx219.dtbo
 imx8mm-venice-gw72xx-0x-rpidsi-dtbs	:= imx8mm-venice-gw72xx-0x.dtb imx8mm-venice-gw72xx-0x-rpidsi.dtbo
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl-lte.dtso b/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl-lte.dtso
new file mode 100644
index 0000000000000..324004b0eca3e
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-kontron-bl-lte.dtso
@@ -0,0 +1,186 @@
+// SPDX-License-Identifier: GPL-2.0+ OR MIT
+/*
+ * Copyright (C) 2025 Kontron Electronics GmbH
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/leds/common.h>
+#include "imx8mm-pinfunc.h"
+
+&{/} {
+	compatible = "kontron,imx8mm-bl", "kontron,imx8mm-sl", "fsl,imx8mm";
+
+	gpio-keys {
+		compatible = "gpio-keys";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_gpio_keys>;
+
+		key-user {
+			label = "user";
+			linux,code = <BTN_0>;
+			gpios = <&gpio4 12 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_gpio_led_lte>;
+
+		lte-led1-b {
+			label = "lte-led1-blue";
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&gpio3 17 GPIO_ACTIVE_HIGH>;
+		};
+
+		lte-led1-g {
+			label = "lte-led1-green";
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&gpio3 18 GPIO_ACTIVE_HIGH>;
+		};
+
+		lte-led1-r {
+			label = "lte-led1-red";
+			color = <LED_COLOR_ID_RED>;
+			gpios = <&gpio5 23 GPIO_ACTIVE_HIGH>;
+		};
+
+		lte-led2-b {
+			label = "lte-led2-blue";
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&gpio5 25 GPIO_ACTIVE_HIGH>;
+		};
+
+		lte-led2-g {
+			label = "lte-led2-green";
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&gpio5 22 GPIO_ACTIVE_HIGH>;
+		};
+
+		lte-led2-r {
+			label = "lte-led2-red";
+			color = <LED_COLOR_ID_RED>;
+			gpios = <&gpio5 24 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+&ecspi3 {
+	status = "disabled";
+};
+
+&i2c2 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_i2c2>;
+	status = "okay";
+
+	tpm@2e {
+		compatible = "infineon,slb9673", "tcg,tpm-tis-i2c";
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_tpm>;
+		reg = <0x2e>;
+		interrupt-parent = <&gpio3>;
+		interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
+	};
+};
+
+&gpio3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_gpio3>;
+	gpio-line-names = "", "", "", "",
+			  "", "", "", "",
+			  "", "", "VDD_IO_REF", "TPM_PIRQ#",
+			  "TPM_RESET# ", "", "", "",
+			  "", "LTE_LED1_B", "LTE_LED1_G", "",
+			  "";
+
+	vdd-io-ref-hog {
+		gpio-hog;
+		gpios = <10 GPIO_ACTIVE_HIGH>;
+		line-name = "VDD_IO_REF";
+		output-high;
+	};
+
+	tpm-reset-hog {
+		gpio-hog;
+		gpios = <12 GPIO_ACTIVE_LOW>;
+		line-name = "TPM_RESET#";
+		output-low;
+	};
+};
+
+&gpio4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_gpio4>;
+	gpio-line-names = "", "", "LTE_RESET", "",
+			  "", "", "", "",
+			  "", "", "", "LTE_PWRKEY",
+			  "", "", "", "",
+			  "", "", "", "",
+			  "LTE_PWR_EN";
+};
+
+&gpio5 {
+	gpio-line-names = "", "", "", "",
+			  "", "", "", "",
+			  "", "", "", "",
+			  "", "", "", "",
+			  "", "", "", "",
+			  "", "", "LTE_LED2_G", "LTE_LED1_R",
+			  "LTE_LED2_R", "LTE_LED2_B";
+};
+
+&iomuxc {
+	pinctrl_gpio3: gpio3grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_NAND_DATA04_GPIO3_IO10		0x19 /* VDD_IO_REF */
+		>;
+	};
+
+	pinctrl_gpio4: gpio4grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI1_RXD0_GPIO4_IO2		0x19 /* LTE_RESET */
+			MX8MM_IOMUXC_SAI1_TXC_GPIO4_IO11 		0x19 /* LTE_PWRKEY */
+			MX8MM_IOMUXC_SAI1_MCLK_GPIO4_IO20		0x19 /* LTE_PWR_EN */
+		>;
+	};
+
+	pinctrl_gpio_keys: gpiokeysgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI1_TXD0_GPIO4_IO12		0x19 /* Pushbutton */
+		>;
+	};
+
+	pinctrl_gpio_led_lte: gpioledltegrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_NAND_WE_B_GPIO3_IO17		0x19 /* LTE_LED1_B */
+			MX8MM_IOMUXC_NAND_WP_B_GPIO3_IO18		0x19 /* LTE_LED1_G */
+			MX8MM_IOMUXC_UART1_TXD_GPIO5_IO23		0x19 /* LTE_LED1_R */
+			MX8MM_IOMUXC_UART2_TXD_GPIO5_IO25		0x19 /* LTE_LED2_B */
+			MX8MM_IOMUXC_UART1_RXD_GPIO5_IO22		0x19 /* LTE_LED2_G */
+			MX8MM_IOMUXC_UART2_RXD_GPIO5_IO24		0x19 /* LTE_LED2_R */
+		>;
+	};
+
+	pinctrl_i2c2: i2c2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_I2C2_SCL_I2C2_SCL			0x40000083 /* I2C_A_SCL */
+			MX8MM_IOMUXC_I2C2_SDA_I2C2_SDA			0x40000083 /* I2C_A_SDA */
+		>;
+	};
+
+	pinctrl_tpm: tpmgrp {
+		fsl,pins = <
+			MX8MM_IOMUXC_NAND_DATA05_GPIO3_IO11		0x19 /* TPM_PIRQ# */
+			MX8MM_IOMUXC_NAND_DATA06_GPIO3_IO12		0x39 /* TPM_RESET# */
+		>;
+	};
+};
-- 
2.50.1