diff --git a/soc/xtensa/intel_adsp/Kconfig b/soc/xtensa/intel_adsp/Kconfig
index a2b9c1011d2ecb..f04286ccae12b4 100644
--- a/soc/xtensa/intel_adsp/Kconfig
+++ b/soc/xtensa/intel_adsp/Kconfig
@@ -95,6 +95,13 @@ config ADSP_INIT_HPSRAM
 	help
 	  Need to init HP SRAM.
 
+config ADSP_POWER_DOWN_HPSRAM
+	bool
+	default n if ZTEST
+	default y
+	help
+	 Switch off HP SRAM during power down.
+
 config ADSP_DISABLE_L2CACHE_AT_BOOT
 	bool
 
diff --git a/soc/xtensa/intel_adsp/ace/power.c b/soc/xtensa/intel_adsp/ace/power.c
index cb915988298182..620a6852bd63ce 100644
--- a/soc/xtensa/intel_adsp/ace/power.c
+++ b/soc/xtensa/intel_adsp/ace/power.c
@@ -282,9 +282,12 @@ void pm_state_set(enum pm_state state, uint8_t substate_id)
 					(void *)rom_entry;
 			sys_cache_data_flush_range(imr_layout, sizeof(*imr_layout));
 #endif /* CONFIG_ADSP_IMR_CONTEXT_SAVE */
+			uint32_t hpsram_mask = 0;
+#ifdef CONFIG_ADSP_POWER_DOWN_HPSRAM
 			/* turn off all HPSRAM banks - get a full bitmap */
 			uint32_t ebb_banks = ace_hpsram_get_bank_count();
-			uint32_t hpsram_mask = (1 << ebb_banks) - 1;
+			hpsram_mask = (1 << ebb_banks) - 1;
+#endif /* CONFIG_ADSP_POWER_DOWN_HPSRAM */
 			/* do power down - this function won't return */
 			power_down(true, uncache_to_cache(&hpsram_mask),
 				   true);
diff --git a/soc/xtensa/intel_adsp/cavs/power.c b/soc/xtensa/intel_adsp/cavs/power.c
index 42598e9b56fd28..8bb18f316f3439 100644
--- a/soc/xtensa/intel_adsp/cavs/power.c
+++ b/soc/xtensa/intel_adsp/cavs/power.c
@@ -87,7 +87,7 @@ void pm_state_set(enum pm_state state, uint8_t substate_id)
 		soc_cpus_active[cpu] = false;
 		sys_cache_data_flush_and_invd_all();
 		if (cpu == 0) {
-			uint32_t hpsram_mask[HPSRAM_SEGMENTS];
+			uint32_t hpsram_mask[HPSRAM_SEGMENTS] = {0};
 
 			struct imr_header hdr = {
 				.adsp_imr_magic = ADSP_IMR_MAGIC_VALUE,
@@ -97,9 +97,11 @@ void pm_state_set(enum pm_state state, uint8_t substate_id)
 			  arch_xtensa_uncached_ptr((struct imr_layout *)L3_MEM_BASE_ADDR);
 			imr_layout->imr_state.header = hdr;
 
+#ifdef CONFIG_ADSP_POWER_DOWN_HPSRAM
 			/* turn off all HPSRAM banks - get a full bitmap */
 			for (int i = 0; i < HPSRAM_SEGMENTS; i++)
 				hpsram_mask[i] = HPSRAM_MEMMASK(i);
+#endif /* CONFIG_ADSP_POWER_DOWN_HPSRAM */
 			/* do power down - this function won't return */
 			power_down_cavs(true, uncache_to_cache(&hpsram_mask[0]));
 		} else {