boards: nxp: imxrt700: Add i.MXRT700 HiFi4 board support

Add board support for the HiFi4 DSP core from NXP i.MXRT700.

Signed-off-by: Iuliana Prodan <iuliana.prodan@nxp.com>

boards/nxp/mimxrt700_evk/Kconfig.mimxrt700_evk

@@ -1,7 +1,8 @@
-# Copyright 2024 NXP
+# Copyright 2024-2025 NXP
 # SPDX-License-Identifier: Apache-2.0
 
 config BOARD_MIMXRT700_EVK
 	select SOC_MIMXRT798S_CM33_CPU0 if BOARD_MIMXRT700_EVK_MIMXRT798S_CM33_CPU0
 	select SOC_MIMXRT798S_CM33_CPU1 if BOARD_MIMXRT700_EVK_MIMXRT798S_CM33_CPU1
+	select SOC_MIMXRT798S_HIFI4 if BOARD_MIMXRT700_EVK_MIMXRT798S_HIFI4
 	select SOC_PART_NUMBER_MIMXRT798SGFOA

boards/nxp/mimxrt700_evk/board.cmake

@@ -13,8 +13,6 @@ elseif(CONFIG_SOC_MIMXRT798S_CM33_CPU1)
   board_runner_args(jlink "--device=MIMXRT798S_M33_1")
   board_runner_args(linkserver  "--device=MIMXRT798S:MIMXRT700-EVK")
   board_runner_args(linkserver  "--core=cm33_core1")
-else()
-  message(FATAL_ERROR "Requested core is not supported")
 endif()
 
 include(${ZEPHYR_BASE}/boards/common/jlink.board.cmake)

boards/nxp/mimxrt700_evk/mimxrt700_evk_mimxrt798s_hifi4.dts

@@ -0,0 +1,18 @@
+/*
+ * Copyright 2024 NXP
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+
+#include <nxp/nxp_imxrt700_hifi4.dtsi>
+
+/ {
+	model = "NXP MIMXRT700-EVK HiFi4 DSP";
+	compatible = "nxp,mimxrt798s";
+
+	chosen {
+		zephyr,sram = &dtcm;
+	};
+};

boards/nxp/mimxrt700_evk/mimxrt700_evk_mimxrt798s_hifi4.yaml

@@ -0,0 +1,18 @@
+#
+# Copyright 2024 NXP
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+identifier: mimxrt700_evk/mimxrt798s/hifi4
+name: NXP MIMXRT700-EVK HiFi4
+type: mcu
+arch: xtensa
+toolchain:
+  - xcc
+  - xt-clang
+  - zephyr
+testing:
+  only_tags:
+    - kernel
+vendor: nxp