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Message-ID: <20250721100701.115548-2-frieder@fris.de>
Date: Mon, 21 Jul 2025 12:05:35 +0200
From: Frieder Schrempf <frieder@...s.de>
To: linux-arm-kernel@...ts.infradead.org,
Conor Dooley <conor+dt@...nel.org>,
devicetree@...r.kernel.org,
imx@...ts.linux.dev,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
linux-kernel@...r.kernel.org,
Rob Herring <robh@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Shawn Guo <shawnguo@...nel.org>
Cc: Annette Kobou <annette.kobou@...tron.de>,
Frieder Schrempf <frieder.schrempf@...tron.de>,
Alexander Stein <alexander.stein@...tq-group.com>,
Andrej Picej <andrej.picej@...ik.com>,
Fabio Estevam <festevam@...il.com>,
Frank Li <Frank.Li@....com>,
Liu Ying <victor.liu@....com>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Teresa Remmet <t.remmet@...tec.de>,
Tim Harvey <tharvey@...eworks.com>
Subject: [PATCH v2 01/12] arm64: dts: imx8mm-kontron: Add overlay for LTE extension board
From: Annette Kobou <annette.kobou@...tron.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@...tron.de>
Signed-off-by: Frieder Schrempf <frieder.schrempf@...tron.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
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