feat(mt8186): add SPM suspend driver
Add SPM suspend driver for suspend/resume features.
TEST=build pass
BUG=b:202871018
Change-Id: I25b4b97cd3138a7b347385539e47ccfa884d64fc
diff --git a/plat/mediatek/mt8186/drivers/spm/mt_spm_extern.c b/plat/mediatek/mt8186/drivers/spm/mt_spm_extern.c
new file mode 100644
index 0000000..608d9f9
--- /dev/null
+++ b/plat/mediatek/mt8186/drivers/spm/mt_spm_extern.c
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) since 2022, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/debug.h>
+#include <lib/mmio.h>
+#include <platform_def.h>
+
+#define INFRA_AO_RES_CTRL_MASK (INFRACFG_AO_BASE + 0xB8)
+#define INFRA_AO_RES_CTRL_MASK_EMI_IDLE BIT(18)
+#define INFRA_AO_RES_CTRL_MASK_MPU_IDLE BIT(15)
+
+void spm_extern_initialize(void)
+{
+ unsigned int val;
+
+ val = mmio_read_32(INFRA_AO_RES_CTRL_MASK);
+
+ val |= (INFRA_AO_RES_CTRL_MASK_EMI_IDLE | INFRA_AO_RES_CTRL_MASK_MPU_IDLE);
+ mmio_write_32(INFRA_AO_RES_CTRL_MASK, val);
+}