Merge tag 'stm32-dt-for-v6.16-1' of https://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32 into soc/dt

STM32 DT for v6.16, round 1

Highlights:
----------

- MCU:
  - Add low power timer on STM32F746
  - Add STM32H747 High end MCU support. It embeds:
    - dual-core (Cortex-M7 + Cortex-M4)
    - up to 2 Mbytes flash
    - 1 Mbyte of internal RAM
  - Add STM32H747i-disco board support. Detailed information can be
    found at:
    https://www.st.com/en/evaluation-tools/stm32h747i-disco.html

- MPU:
  - STM32MP13:
    - Add VREFINT calibration support based on ADC.

  - STMP32MP15:
    - Add new Ultratronik Fly board support:
      - based on STM32MP157C SoC
      - 1GB of DDR3
      - Several connections are available on this boards:
        2*USB2.0, 1*USB2.0 MiniUSB, Debug UART, 1*UART, 1*USART,
	SDcard, RJ45, ...

  - STM32MP25:
    - Add OCTOSPI support on STM32MP25 SoCs
    - Add SPI NOR flash support on STM32MP257F-EV1 connected to OSPI1
    - Add Low power timer TIMER (LPTIM) on STM32MP25 SoCs and use
      LPTIM3 as low power broadcast timer on STM32MP257F-EV1.

* tag 'stm32-dt-for-v6.16-1' of https://git.kernel.org/pub/scm/linux/kernel/git/atorgue/stm32: (22 commits)
  ARM: dts: stm32: add initial support for stm32mp157-ultra-fly-sbc board
  MAINTAINERS: Add entry for ULTRATRONIK BOARD SUPPORT
  dt-bindings: arm: stm32: Document Ultratronik's Fly board DT binding
  dt-bindings: vendor-prefixes: Add Ultratronik
  arm64: dts: st: use lptimer3 as tick broadcast source on stm32mp257f-ev1
  arm64: dts: st: add low-power timer nodes on stm32mp251
  arm64: defconfig: enable STM32 LP timer clockevent driver
  arm64: dts: st: Add SPI NOR flash support on stm32mp257f-ev1 board
  arm64: dts: st: Add ospi port1 pinctrl entries in stm32mp25-pinctrl.dtsi
  arm64: dts: st: Add OMM node on stm32mp251
  ARM: dts: stm32: support STM32h747i-disco board
  ARM: dts: stm32: add an extra pin map for USART1 on stm32h743
  ARM: dts: stm32: add pin map for UART8 controller on stm32h743
  ARM: dts: stm32: add uart8 node for stm32h743 MCU
  dt-bindings: clock: stm32h7: rename USART{7,8}_CK to UART{7,8}_CK
  ARM: stm32: add a new SoC - STM32H747
  dt-bindings: arm: stm32: add compatible for stm32h747i-disco board
  ARM: dts: stm32h7-pinctrl: add _a suffix to u[s]art_pins phandles
  ARM: dts: st: stm32: Align wifi node name with bindings
  ARM: dts: stm32: add low power timer on STM32F746
  ...

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnd Bergmann <[email protected]>

Author: arndb

Documentation/devicetree/bindings/arm/stm32/stm32.yaml

@@ -42,6 +42,10 @@ properties:
               - st,stm32h743i-disco
               - st,stm32h743i-eval
           - const: st,stm32h743
+      - items:
+          - enum:
+              - st,stm32h747i-disco
+          - const: st,stm32h747
       - items:
           - enum:
               - st,stm32h750i-art-pi
@@ -184,6 +188,11 @@ properties:
           - const: phytec,phycore-stm32mp157c-som
           - const: st,stm32mp157
 
+      - description: Ultratronik STM32MP1 SBC based Boards
+        items:
+          - const: ultratronik,stm32mp157c-ultra-fly-sbc
+          - const: st,stm32mp157
+
       - description: ST STM32MP257 based Boards
         items:
           - enum:

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -1611,6 +1611,8 @@ patternProperties:
     description: Universal Scientific Industrial Co., Ltd.
   "^usr,.*":
     description: U.S. Robotics Corporation
+  "^ultratronik,.*":
+    description: Ultratronik GmbH
   "^utoo,.*":
     description: Aigo Digital Technology Co., Ltd.
   "^v3,.*":

MAINTAINERS

@@ -24811,6 +24811,12 @@ S:	Maintained
 F:	drivers/usb/common/ulpi.c
 F:	include/linux/ulpi/
 
+ULTRATRONIK BOARD SUPPORT
+M:	Goran Rađenović <[email protected]>
+M:	Börge Strümpfel <[email protected]>
+S:	Maintained
+F:	arch/arm/boot/dts/st/stm32mp157c-ultra-fly-sbc.dts
+
 UNICODE SUBSYSTEM
 M:	Gabriel Krisman Bertazi <[email protected]>
 L:	[email protected]

arch/arm/boot/dts/st/Makefile

@@ -28,6 +28,7 @@ dtb-$(CONFIG_ARCH_STM32) += \
 	stm32746g-eval.dtb \
 	stm32h743i-eval.dtb \
 	stm32h743i-disco.dtb \
+	stm32h747i-disco.dtb \
 	stm32h750i-art-pi.dtb \
 	stm32mp133c-prihmb.dtb \
 	stm32mp135f-dhcor-dhsbc.dtb \
@@ -70,7 +71,8 @@ dtb-$(CONFIG_ARCH_STM32) += \
 	stm32mp157c-lxa-tac-gen2.dtb \
 	stm32mp157c-odyssey.dtb \
 	stm32mp157c-osd32mp1-red.dtb \
-	stm32mp157c-phycore-stm32mp1-3.dtb
+	stm32mp157c-phycore-stm32mp1-3.dtb \
+	stm32mp157c-ultra-fly-sbc.dtb
 dtb-$(CONFIG_ARCH_U8500) += \
 	ste-snowball.dtb \
 	ste-hrefprev60-stuib.dtb \

arch/arm/boot/dts/st/stm32f746.dtsi

@@ -43,6 +43,7 @@
 #include "../armv7-m.dtsi"
 #include <dt-bindings/clock/stm32fx-clock.h>
 #include <dt-bindings/mfd/stm32f7-rcc.h>
+#include <dt-bindings/interrupt-controller/irq.h>
 
 / {
 	#address-cells = <1>;
@@ -245,6 +246,39 @@
 			};
 		};
 
+		lptimer1: timer@40002400 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "st,stm32-lptimer";
+			reg = <0x40002400 0x400>;
+			interrupts-extended = <&exti 23 IRQ_TYPE_EDGE_RISING>;
+			clocks = <&rcc 1 CLK_LPTIMER>;
+			clock-names = "mux";
+			status = "disabled";
+
+			pwm {
+				compatible = "st,stm32-pwm-lp";
+				#pwm-cells = <3>;
+				status = "disabled";
+			};
+
+			trigger@0 {
+				compatible = "st,stm32-lptimer-trigger";
+				reg = <0>;
+				status = "disabled";
+			};
+
+			counter {
+				compatible = "st,stm32-lptimer-counter";
+				status = "disabled";
+			};
+
+			timer {
+				compatible = "st,stm32-lptimer-timer";
+				status = "disabled";
+			};
+		};
+
 		rtc: rtc@40002800 {
 			compatible = "st,stm32-rtc";
 			reg = <0x40002800 0x400>;

arch/arm/boot/dts/st/stm32h7-pinctrl.dtsi

@@ -198,7 +198,7 @@
 		};
 	};
 
-	uart4_pins: uart4-0 {
+	uart4_pins_a: uart4-0 {
 		pins1 {
 			pinmux = <STM32_PINMUX('A', 0, AF8)>; /* UART4_TX */
 			bias-disable;
@@ -211,7 +211,20 @@
 		};
 	};
 
-	usart1_pins: usart1-0 {
+	uart8_pins_a: uart8-0 {
+		pins1 {
+			pinmux = <STM32_PINMUX('J', 8, AF8)>; /* UART8_TX */
+			bias-disable;
+			drive-push-pull;
+			slew-rate = <0>;
+		};
+		pins2 {
+			pinmux = <STM32_PINMUX('J', 9, AF8)>; /* UART8_RX */
+			bias-disable;
+		};
+	};
+
+	usart1_pins_a: usart1-0 {
 		pins1 {
 			pinmux = <STM32_PINMUX('B', 14, AF4)>; /* USART1_TX */
 			bias-disable;
@@ -224,7 +237,20 @@
 		};
 	};
 
-	usart2_pins: usart2-0 {
+	usart1_pins_b: usart1-1 {
+		pins1 {
+			pinmux = <STM32_PINMUX('A', 9, AF7)>; /* USART1_TX */
+			bias-disable;
+			drive-push-pull;
+			slew-rate = <0>;
+		};
+		pins2 {
+			pinmux = <STM32_PINMUX('A', 10, AF7)>; /* USART1_RX */
+			bias-disable;
+		};
+	};
+
+	usart2_pins_a: usart2-0 {
 		pins1 {
 			pinmux = <STM32_PINMUX('D', 5, AF7)>; /* USART2_TX */
 			bias-disable;
@@ -237,7 +263,7 @@
 		};
 	};
 
-	usart3_pins: usart3-0 {
+	usart3_pins_a: usart3-0 {
 		pins1 {
 			pinmux = <STM32_PINMUX('B', 10, AF7)>, /* USART3_TX */
 				 <STM32_PINMUX('D', 12, AF7)>; /* USART3_RTS_DE */

arch/arm/boot/dts/st/stm32h743.dtsi

@@ -211,6 +211,14 @@
 			};
 		};
 
+		uart8: serial@40007c00 {
+			compatible = "st,stm32h7-uart";
+			reg = <0x40007c00 0x400>;
+			interrupts = <83>;
+			status = "disabled";
+			clocks = <&rcc UART8_CK>;
+		};
+
 		usart1: serial@40011000 {
 			compatible = "st,stm32h7-uart";
 			reg = <0x40011000 0x400>;

arch/arm/boot/dts/st/stm32h743i-disco.dts

@@ -105,7 +105,7 @@
 };
 
 &usart2 {
-	pinctrl-0 = <&usart2_pins>;
+	pinctrl-0 = <&usart2_pins_a>;
 	pinctrl-names = "default";
 	status = "okay";
 };

arch/arm/boot/dts/st/stm32h743i-eval.dts

@@ -145,7 +145,7 @@
 };
 
 &usart1 {
-	pinctrl-0 = <&usart1_pins>;
+	pinctrl-0 = <&usart1_pins_a>;
 	pinctrl-names = "default";
 	status = "okay";
 };

arch/arm/boot/dts/st/stm32h747i-disco.dts

@@ -0,0 +1,136 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 Amarula Solutions, Dario Binacchi <[email protected]>
+ */
+
+/dts-v1/;
+#include "stm32h743.dtsi"
+#include "stm32h7-pinctrl.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "STMicroelectronics STM32H747i-Discovery board";
+	compatible = "st,stm32h747i-disco", "st,stm32h747";
+
+	chosen {
+		bootargs = "root=/dev/ram";
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@d0000000 {
+		device_type = "memory";
+		reg = <0xd0000000 0x2000000>;
+	};
+
+	aliases {
+		serial0 = &usart1;
+		serial1 = &uart8;
+	};
+
+	v3v3: regulator-v3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "v3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		led-green {
+			gpios = <&gpioi 12 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "heartbeat";
+		};
+		led-orange {
+			gpios = <&gpioi 13 GPIO_ACTIVE_LOW>;
+		};
+		led-red {
+			gpios = <&gpioi 14 GPIO_ACTIVE_LOW>;
+		};
+		led-blue {
+			gpios = <&gpioi 15 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+		autorepeat;
+		button-0 {
+			label = "User";
+			linux,code = <KEY_WAKEUP>;
+			gpios = <&gpioc 13 GPIO_ACTIVE_HIGH>;
+		};
+		button-1 {
+			label = "JoySel";
+			linux,code = <KEY_ENTER>;
+			gpios = <&gpiok 2 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+		};
+		button-2 {
+			label = "JoyDown";
+			linux,code = <KEY_DOWN>;
+			gpios = <&gpiok 3 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+		};
+		button-3 {
+			label = "JoyUp";
+			linux,code = <KEY_UP>;
+			gpios = <&gpiok 6 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+		};
+		button-4 {
+			label = "JoyLeft";
+			linux,code = <KEY_LEFT>;
+			gpios = <&gpiok 4 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+		};
+		button-5 {
+			label = "JoyRight";
+			linux,code = <KEY_RIGHT>;
+			gpios = <&gpiok 5 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+		};
+	};
+};
+
+&clk_hse {
+	clock-frequency = <25000000>;
+};
+
+&mac {
+	status = "disabled";
+	pinctrl-0 = <&ethernet_rmii>;
+	pinctrl-names = "default";
+	phy-mode = "rmii";
+	phy-handle = <&phy0>;
+
+	mdio0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "snps,dwmac-mdio";
+		phy0: ethernet-phy@0 {
+			reg = <0>;
+		};
+	};
+};
+
+&sdmmc1 {
+	pinctrl-names = "default", "opendrain", "sleep";
+	pinctrl-0 = <&sdmmc1_b4_pins_a>;
+	pinctrl-1 = <&sdmmc1_b4_od_pins_a>;
+	pinctrl-2 = <&sdmmc1_b4_sleep_pins_a>;
+	cd-gpios = <&gpioi 8 GPIO_ACTIVE_LOW>;
+	broken-cd;
+	st,neg-edge;
+	bus-width = <4>;
+	vmmc-supply = <&v3v3>;
+	status = "okay";
+};
+
+&usart1 {
+	pinctrl-0 = <&usart1_pins_b>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&uart8 {
+	pinctrl-0 = <&uart8_pins_a>;
+	pinctrl-names = "default";
+	status = "okay";
+};