boards: arm: stm32f723e_disco: add Arduino SPI support

Add Arduino SPI support for stm32f723e_disco.

Signed-off-by: Alexandre Bourdiol <alexandre.bourdiol@st.com>

boards/arm/stm32f723e_disco/arduino_r3_connector.dtsi

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2021 STMicroelectronics
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	arduino_header: connector {
+		compatible = "arduino-header-r3";
+		#gpio-cells = <2>;
+		gpio-map-mask = <0xffffffff 0xffffffc0>;
+		gpio-map-pass-thru = <0 0x3f>;
+		gpio-map = <0 0 &gpioa 6 0>,	/* A0 */
+			   <1 0 &gpioa 4 0>,	/* A1 */
+			   <2 0 &gpioc 4 0>,	/* A2 */
+			   <3 0 &gpiof 10 0>,	/* A3 */
+			   <4 0 &gpioc 0 0>,	/* A4 */
+			   <5 0 &gpioc 1 0>,	/* A5 */
+			   <6 0 &gpioa 3 0>,	/* D0 */
+			   <7 0 &gpioa 2 0>,	/* D1 */
+			   <8 0 &gpioc 5 0>,	/* D2 */
+			   <9 0 &gpioe 5 0>,	/* D3 */
+			   <10 0 &gpioh 3 0>,	/* D4 */
+			   <11 0 &gpiob 0 0>,	/* D5 */
+			   <12 0 &gpioe 6 0>,	/* D6 */
+			   <13 0 &gpioe 3 0>,	/* D7 */
+			   <14 0 &gpioe 4 0>,	/* D8 */
+			   <15 0 &gpioh 6 0>,	/* D9 */
+			   <16 0 &gpioa 1 0>,	/* D10 */
+			   <17 0 &gpiob 5 0>,	/* D11 */
+			   <18 0 &gpiob 4 0>,	/* D12 */
+			   <19 0 &gpioa 5 0>,	/* D13 */
+			   <20 0 &gpioh 5 0>,	/* D14 */
+			   <21 0 &gpioh 4 0>;	/* D15 */
+	};
+};
+
+arduino_i2c: &i2c2 {};
+arduino_spi: &spi1 {};
+arduino_serial: &usart2 {};

boards/arm/stm32f723e_disco/stm32f723e_disco.dts

@@ -7,6 +7,7 @@
 /dts-v1/;
 #include <st/f7/stm32f723Xe.dtsi>
 #include <st/f7/stm32f723i(c-e)kx-pinctrl.dtsi>
+#include "arduino_r3_connector.dtsi"
 
 / {
 	model = "STMicroelectronics STM32F723E DISCOVERY board";
@@ -73,10 +74,6 @@
 	apb2-prescaler = <2>;
 };
 
-arduino_i2c: &i2c2 {};
-arduino_spi: &spi1 {};
-arduino_serial: &usart2 {};
-
 &usart2 {
 	pinctrl-0 = <&usart2_tx_pa2 &usart2_rx_pa3>;
 	current-speed = <115200>;

boards/arm/stm32f723e_disco/stm32f723e_disco.yaml

@@ -11,6 +11,8 @@ flash: 512
 supported:
   - arduino_i2c
   - gpio
+  - arduino_gpio
   - i2c
   - spi
+  - arduino_spi
   - usb_device