boards: arm: stm32h747i_disco: add Arduino SPI support

Add Arduino SPI support for stm32h747i_disco.

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

boards/arm/stm32h747i_disco/doc/index.rst

@@ -71,6 +71,8 @@ The current Zephyr stm32h747i_disco board configuration supports the following h
 +-----------+------------+-------------------------------------+
 | FMC       | on-chip    | memc (SDRAM)                        |
 +-----------+------------+-------------------------------------+
+| SPI       | on-chip    | spi                                 |
++-----------+------------+-------------------------------------+
 
 (*) From UM2411 Rev 4:
    With the default setting, the Ethernet feature is not working because of
@@ -96,6 +98,7 @@ Default Zephyr Peripheral Mapping:
 
 - UART_1 TX/RX : PA9/PA10 (ST-Link Virtual Port Com)
 - UART_8 TX/RX : PJ8/PJ9 (Arduino Serial)
+- SPI_5 NSS/SCK/MISO/MOSI : PK1/PK0/PJ11/PJ10 (Arduino SPI)
 - LD1 : PI12
 - LD2 : PI13
 - LD3 : PI14

boards/arm/stm32h747i_disco/stm32h747i_disco.dtsi

@@ -76,3 +76,8 @@
 };
 
 arduino_serial: &uart8 {};
+
+&spi5 {
+	pinctrl-0 = <&spi5_nss_pk1 &spi5_sck_pk0
+		     &spi5_miso_pj11 &spi5_mosi_pj10>;
+};

boards/arm/stm32h747i_disco/stm32h747i_disco_m7.dts

@@ -80,6 +80,10 @@
 	status = "okay";
 };
 
+&spi5 {
+	status = "okay";
+};
+
 &flash0 {
 	partitions {
 		compatible = "fixed-partitions";
@@ -160,3 +164,5 @@
 		};
 	};
 };
+
+arduino_spi: &spi5 {};

boards/arm/stm32h747i_disco/stm32h747i_disco_m7.yaml

@@ -11,5 +11,7 @@ flash: 1024
 supported:
   - arduino_gpio
   - gpio
+  - arduino_spi
+  - spi
   - netif:eth
   - memc