samples: add support for i.MX8ULP DSP in openamp_rsc_table

Add the dts and config overlay for imx8ulp_evk//adsp to have the openamp_rsc_table sample working on HiFi4 DSP from i.MX8ULP. Since openamp_rsc_table sample uses IPM API and i.MX8ULP has a mbox driver for messaging unit, we need a mailbox node. This will load the ipm_mbox driver that exposes the IPM interface while using a MBOX driver in the back-end. Signed-off-by: Iuliana Prodan <[email protected]>
zephyrproject-rtos · Dec 16, 2024 · 74e80fa · 74e80fa
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commit 74e80fa
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diff --git a/samples/subsys/ipc/openamp_rsc_table/boards/imx8ulp_evk_mimx8ud7_adsp.conf b/samples/subsys/ipc/openamp_rsc_table/boards/imx8ulp_evk_mimx8ud7_adsp.conf
@@ -0,0 +1,8 @@
+CONFIG_LOG_PRINTK=n
+CONFIG_OPENAMP_WITH_DCACHE=y
+
+CONFIG_MBOX=y
+CONFIG_MBOX_INIT_PRIORITY=3
+
+CONFIG_IPM_MBOX=y
+CONFIG_MBOX_NXP_IMX_MU=y
diff --git a/samples/subsys/ipc/openamp_rsc_table/boards/imx8ulp_evk_mimx8ud7_adsp.overlay b/samples/subsys/ipc/openamp_rsc_table/boards/imx8ulp_evk_mimx8ud7_adsp.overlay
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2024 NXP
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	chosen {
+		/*
+		 * shared memory reserved for the inter-processor communication
+		 */
+		zephyr,ipc_shm = &dspsram3;
+		zephyr,ipc = &mailbox0;
+	};
+
+	dspsram3: memory@8fef0000 {
+		compatible = "mmio-sram";
+		reg = <0x8fef0000 0x110000>;
+	};
+
+	mailbox0: mailbox {
+		compatible = "zephyr,mbox-ipm";
+		mboxes = <&mu3 0>, <&mu3 1>;
+		mbox-names = "tx", "rx";
+		status = "okay";
+	};
+};
+
+&mu3 {
+	status = "okay";
+};