tests: drivers: spi: spi_loopback: Enable nucleo_g474re DMA support

Enable DMA support for the Nucleo g474re board

Signed-off-by: Erwin Rol <[email protected]>

Author: lowlander

tests/drivers/spi/spi_loopback/boards/nucleo_g474re.conf

@@ -1,5 +1,11 @@
 CONFIG_SPI_LOOPBACK_DRV_NAME="SPI_1"
-CONFIG_SPI_STM32_INTERRUPT=y
+
+CONFIG_SPI_STM32_DMA=y
+CONFIG_SPI_STM32_INTERRUPT=n
+
+CONFIG_SPI_ASYNC=n
+
+CONFIG_SPI_LOOPBACK_MODE_LOOP=n
 
 # Reduce bus clock speed to be able to reach SPI_LOOPBACK_SLOW_FREQ = 500000
 # with max prescaler 256

tests/drivers/spi/spi_loopback/boards/nucleo_g474re.overlay

@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) 2020 Erwin Rol <[email protected]>
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&spi1 {
+	dmas = <&dmamux1 0 11 0x20440 0
+		&dmamux1 8 10 0x20480 0>;
+	dma-names = "tx", "rx";
+};
+
+&dma1 {
+	status = "okay";
+};
+
+&dma2 {
+	status = "okay";
+};
+
+&dmamux1 {
+	status = "okay";
+};