tests: drivers: spi: Add SPI support for Renesas RZ/V2L, A3UL

Add SPI test support for Renesas RZ/V2L-SMARC, RZ/A3UL-SMARC

Signed-off-by: Hieu Nguyen <[email protected]>
Signed-off-by: Nhut Nguyen <[email protected]>

Author: Hieu Nguyen

tests/drivers/spi/spi_loopback/boards/rza3ul_smarc.conf

@@ -0,0 +1,6 @@
+CONFIG_SPI_ASYNC=y
+CONFIG_SPI_RENESAS_RZ_RSPI_INTERRUPT=y
+CONFIG_SPI_RTIO=n
+CONFIG_SPI_LOOPBACK_MODE_LOOP=n
+CONFIG_SPI_LARGE_BUFFER_SIZE=2048
+CONFIG_SPI_IDEAL_TRANSFER_DURATION_SCALING=9

tests/drivers/spi/spi_loopback/boards/rza3ul_smarc.overlay

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2025 Renesas Electronics Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&spi0 {
+	slow@2 {
+		compatible = "test-spi-loopback-slow";
+		reg = <2>;
+		spi-max-frequency = <500000>;
+	};
+
+	fast@2 {
+		compatible = "test-spi-loopback-fast";
+		reg = <2>;
+		spi-max-frequency = <8333333>;
+	};
+};

tests/drivers/spi/spi_loopback/boards/rzv2l_smarc_r9a07g054l23gbg_cm33.conf

@@ -0,0 +1,7 @@
+CONFIG_SPI_ASYNC=y
+CONFIG_SPI_RENESAS_RZ_RSPI_INTERRUPT=y
+CONFIG_SPI_RENESAS_RZ_RSPI_DMAC=n
+CONFIG_SPI_RTIO=n
+CONFIG_SPI_LOOPBACK_MODE_LOOP=n
+CONFIG_SPI_LARGE_BUFFER_SIZE=2048
+CONFIG_SPI_IDEAL_TRANSFER_DURATION_SCALING=41

tests/drivers/spi/spi_loopback/boards/rzv2l_smarc_r9a07g054l23gbg_cm33.overlay

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2025 Renesas Electronics Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&spi1 {
+	dmas = <&dma0 6 RZ_DMA_PERIPH_TO_MEM>,
+	       <&dma0 5 RZ_DMA_MEM_TO_PERIPH>;
+	dma-names = "rx", "tx";
+
+	slow@2 {
+		compatible = "test-spi-loopback-slow";
+		reg = <2>;
+		spi-max-frequency = <500000>;
+	};
+
+	fast@2 {
+		compatible = "test-spi-loopback-fast";
+		reg = <2>;
+		spi-max-frequency = <8333333>;
+	};
+};
+
+&dma0 {
+	status = "okay";
+	dma-buf-addr-alignment = <1>;
+};