diff --git a/plat/mediatek/mt8186/drivers/mcdi/mt_lp_irqremain.c b/plat/mediatek/mt8186/drivers/mcdi/mt_lp_irqremain.c
new file mode 100644
index 0000000..42b2808
--- /dev/null
+++ b/plat/mediatek/mt8186/drivers/mcdi/mt_lp_irqremain.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2022, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <mt_lp_irqremain.h>
+#include <mt_lp_rm.h>
+#include <mtk_cirq.h>
+#include <plat_mtk_lpm.h>
+
+#define KEYPAD_IRQ_ID		U(138)
+#define KEYPAD_WAKESRC		(0x4U)
+
+static struct mt_irqremain remain_irqs;
+
+int mt_lp_irqremain_submit(void)
+{
+	int ret = 0;
+
+	if (remain_irqs.count == 0) {
+		ret = -1;
+	} else {
+		set_wakeup_sources(remain_irqs.irqs, remain_irqs.count);
+		mt_lp_rm_do_update(-1, PLAT_RC_UPDATE_REMAIN_IRQS, &remain_irqs);
+	}
+
+	return ret;
+}
+
+int mt_lp_irqremain_aquire(void)
+{
+	int ret = 0;
+
+	if (remain_irqs.count == 0) {
+		ret = -1;
+	} else {
+		mt_cirq_sw_reset();
+		mt_cirq_clone_gic();
+		mt_cirq_enable();
+	}
+
+	return ret;
+}
+
+int mt_lp_irqremain_release(void)
+{
+	int ret = 0;
+
+	if (remain_irqs.count == 0) {
+		ret = -1;
+	} else {
+		mt_cirq_flush();
+		mt_cirq_disable();
+	}
+
+	return ret;
+}
+
+void mt_lp_irqremain_init(void)
+{
+	uint32_t idx;
+
+	remain_irqs.count = 0U;
+
+	/*edge keypad*/
+	idx = remain_irqs.count;
+	remain_irqs.irqs[idx] = KEYPAD_IRQ_ID;
+	remain_irqs.wakeupsrc_cat[idx] = 0U;
+	remain_irqs.wakeupsrc[idx] = KEYPAD_WAKESRC;
+	remain_irqs.count++;
+
+	mt_lp_irqremain_submit();
+}