ARM: dts: stm32: lxa-tac: add Linux Automation GmbH TAC

The Linux Automation Test Automation Controller (LXA TAC)[1] is an embedded
software development tool built around the Octavo Systems OSD32MP15x SiP.

The device contains an eMMC for storage, a DSA-capable on board ethernet
switch with two external ports, dual CAN busses, a power switch to turn
a device under test on or off and some other I/O.

As of now there are two STM32MP157 based hardware generations (Gen 1 and
Gen 2) that have most of their hardware config in common.
In the future there will also be a STM32MP153 based hardware generation.

[1]: https://www.linux-automation.com/en/products/lxa-tac.htmlSigned-off-by: Leonard Göhrs <l.goehrs@pengutronix.de>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>

arch/arm/boot/dts/st/Makefile

@@ -56,6 +56,8 @@ dtb-$(CONFIG_ARCH_STM32) += \
 	stm32mp157c-ev1.dtb \
 	stm32mp157c-ev1-scmi.dtb \
 	stm32mp157c-lxa-mc1.dtb \
+	stm32mp157c-lxa-tac-gen1.dtb \
+	stm32mp157c-lxa-tac-gen2.dtb \
 	stm32mp157c-odyssey.dtb \
 	stm32mp157c-phycore-stm32mp1-3.dtb
 dtb-$(CONFIG_ARCH_U8500) += \

arch/arm/boot/dts/st/stm32mp157c-lxa-tac-gen1.dts

+// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-3-Clause)
+/*
+ * Copyright (C) 2020 STMicroelectronics - All Rights Reserved
+ * Copyright (C) 2021 Rouven Czerwinski, Pengutronix
+ * Copyright (C) 2023 Leonard Göhrs, Pengutronix
+ */
+
+/dts-v1/;
+
+#include "stm32mp157.dtsi"
+#include "stm32mp15xc-lxa-tac.dtsi"
+
+/ {
+	model = "Linux Automation Test Automation Controller (TAC) Gen 1";
+	compatible = "lxa,stm32mp157c-tac-gen1", "oct,stm32mp15xx-osd32", "st,stm32mp157";
+
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		power-supply = <&v3v3>;
+
+		brightness-levels = <0 31 63 95 127 159 191 223 255>;
+		default-brightness-level = <7>;
+		pwms = <&backlight_pwm 1 1000000 0>;
+	};
+
+	reg_iobus_12v: regulator-iobus-12v {
+		compatible = "regulator-fixed";
+		vin-supply = <&reg_12v>;
+
+		gpio = <&gpioh 13 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		regulator-max-microvolt = <12000000>;
+		regulator-min-microvolt = <12000000>;
+		regulator-name = "12V_IOBUS";
+	};
+};
+
+&gpioa {
+	gpio-line-names = "", "", "STACK_CS2", "", "STACK_CS3", /*  0 */
+	"ETH_GPIO1", "ETH_INT", "", "", "",                     /*  5 */
+	"", "", "", "BOOTROM_LED", "ETH_LAB_LEDRP",             /* 10 */
+	"";                                                     /* 15 */
+};
+
+&gpioc {
+	gpio-line-names = "", "STACK_CS1", "", "", "", /*  0 */
+	"", "", "", "", "",                            /*  5 */
+	"", "";                                        /* 10 */
+};
+
+&gpu {
+	status = "disabled";
+};
+
+&i2c1 {
+	powerboard_gpio: gpio@24 {
+		compatible = "nxp,pca9570";
+		reg = <0x24>;
+
+		#gpio-cells = <2>;
+		gpio-controller;
+		gpio-line-names = "DUT_PWR_EN", "DUT_PWR_DISCH", "DUT_PWR_ADCRST", "";
+	};
+};
+
+&spi2 {
+	adc@0 {
+		compatible = "ti,lmp92064";
+		reg = <0>;
+		spi-max-frequency = <5000000>;
+		vdd-supply = <&reg_pb_3v3>;
+		vdig-supply = <&reg_pb_3v3>;
+		reset-gpios = <&powerboard_gpio 2 GPIO_ACTIVE_HIGH>;
+
+		shunt-resistor-micro-ohms = <15000>;
+	};
+};
+
+&timers1 {
+	/* spare dmas for other usage */
+	/delete-property/dmas;
+	/delete-property/dma-names;
+
+	status = "okay";
+
+	backlight_pwm: pwm {
+		pinctrl-names = "default", "sleep";
+		pinctrl-0 = <&pwm1_pins_c>;
+		pinctrl-1 = <&pwm1_sleep_pins_c>;
+
+		status = "okay";
+	};
+};

arch/arm/boot/dts/st/stm32mp157c-lxa-tac-gen2.dts

+// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-3-Clause)
+/*
+ * Copyright (C) 2020 STMicroelectronics - All Rights Reserved
+ * Copyright (C) 2021 Rouven Czerwinski, Pengutronix
+ * Copyright (C) 2023 Leonard Göhrs, Pengutronix
+ */
+
+/dts-v1/;
+
+#include "stm32mp157.dtsi"
+#include "stm32mp15xc-lxa-tac.dtsi"
+
+/ {
+	model = "Linux Automation Test Automation Controller (TAC) Gen 2";
+	compatible = "lxa,stm32mp157c-tac-gen2", "oct,stm32mp15xx-osd32", "st,stm32mp157";
+
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		power-supply = <&v3v3>;
+
+		brightness-levels = <0 31 63 95 127 159 191 223 255>;
+		default-brightness-level = <7>;
+		pwms = <&led_pwm 3 1000000 0>;
+	};
+
+	reg_iobus_12v: regulator-iobus-12v {
+		compatible = "regulator-fixed";
+		vin-supply = <&reg_12v>;
+		gpio = <&gpioh 13 GPIO_ACTIVE_LOW>;
+		regulator-max-microvolt = <12000000>;
+		regulator-min-microvolt = <12000000>;
+		regulator-name = "12V_IOBUS";
+	};
+
+	led-controller-1 {
+		compatible = "pwm-leds-multicolor";
+
+		multi-led {
+			color = <LED_COLOR_ID_RGB>;
+			function = LED_FUNCTION_STATUS;
+			max-brightness = <65535>;
+
+			led-red {
+				active-low;
+				color = <LED_COLOR_ID_RED>;
+				pwms = <&led_pwm 0 1000000 0>;
+			};
+
+			led-green {
+				active-low;
+				color = <LED_COLOR_ID_GREEN>;
+				pwms = <&led_pwm 2 1000000 0>;
+			};
+
+			led-blue {
+				active-low;
+				color = <LED_COLOR_ID_BLUE>;
+				pwms = <&led_pwm 1 1000000 0>;
+			};
+		};
+	};
+
+	led-controller-2 {
+		compatible = "gpio-leds";
+
+		led-5 {
+			label = "tac:green:iobus";
+			gpios = <&gpiog 1 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-6 {
+			label = "tac:green:can";
+			gpios = <&gpiof 3 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-7 {
+			label = "tac:green:out0";
+			gpios = <&gpiob 8 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-8 {
+			label = "tac:green:out1";
+			gpios = <&gpiog 3 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-9 {
+			label = "tac:green:uarttx";
+			gpios = <&gpiod 3 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-10 {
+			label = "tac:green:uartrx";
+			gpios = <&gpiof 6 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-11 {
+			label = "tac:green:usbh1";
+			gpios = <&gpioc 8 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-12 {
+			label = "tac:green:usbh2";
+			gpios = <&gpiod 6 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-13 {
+			label = "tac:green:usbh3";
+			gpios = <&gpiob 9 GPIO_ACTIVE_HIGH>;
+		};
+
+		led-14 {
+			label = "tac:green:usbg";
+			gpios = <&gpiod 14 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "usb-gadget";
+		};
+
+		led-15 {
+			label = "tac:green:dutpwr";
+			gpios = <&gpioa 15 GPIO_ACTIVE_HIGH>;
+		};
+	};
+};
+
+&gpioa {
+	gpio-line-names = "", "", "DUT_PWR_EN", "", "STACK_CS3", /*  0 */
+	"ETH_GPIO1", "ETH_INT", "", "", "",                      /*  5 */
+	"", "", "", "BOOTROM_LED", "ETH_LAB_LEDRP",              /* 10 */
+	"";                                                      /* 15 */
+};
+
+&gpioc {
+	gpio-line-names = "", "DUT_PWR_DISCH", "", "", "", /*  0 */
+	"", "", "", "", "",                                /*  5 */
+	"", "";                                            /* 10 */
+};
+
+&gpu {
+	status = "disabled";
+};
+
+&m_can2 {
+	termination-gpios = <&gpioe 4 GPIO_ACTIVE_HIGH>;
+	termination-ohms = <120>;
+};
+
+&spi2 {
+	adc@0 {
+		compatible = "ti,lmp92064";
+		reg = <0>;
+
+		reset-gpios = <&gpioa 4 GPIO_ACTIVE_HIGH>;
+		shunt-resistor-micro-ohms = <15000>;
+		spi-max-frequency = <5000000>;
+		vdd-supply = <&reg_pb_3v3>;
+		vdig-supply = <&reg_pb_3v3>;
+	};
+};
+
+&timers8 {
+	/* spare dmas for other usage */
+	/delete-property/dmas;
+	/delete-property/dma-names;
+
+	status = "okay";
+
+	led_pwm: pwm {
+		pinctrl-names = "default", "sleep";
+		pinctrl-0 = <&pwm8_pins_b>;
+		pinctrl-1 = <&pwm8_sleep_pins_b>;
+		status = "okay";
+	};
+};