diff --git a/src/soc/mediatek/mt8189/Makefile.mk b/src/soc/mediatek/mt8189/Makefile.mk
index a70918272a..c0501d45a1 100644
--- a/src/soc/mediatek/mt8189/Makefile.mk
+++ b/src/soc/mediatek/mt8189/Makefile.mk
@@ -21,6 +21,7 @@ romstage-y += ../common/dramc_param.c
 romstage-y += ../common/emi.c
 romstage-y += ../common/memory.c ../common/memory_test.c
 romstage-y += ../common/mmu_operations.c ../common/mmu_cmops.c
+romstage-y += ../common/mt6315.c mt6315.c
 romstage-y += ../common/mt6359p.c mt6359p.c
 romstage-y += ../common/pll.c pll.c
 romstage-y += ../common/pmif.c ../common/pmif_clk.c ../common/pmif_init.c pmif_clk.c
@@ -32,6 +33,7 @@ ramstage-y += ../common/dramc_info.c
 ramstage-y += ../common/emi.c
 ramstage-y += ../common/memory.c
 ramstage-y += ../common/mmu_operations.c ../common/mmu_cmops.c
+ramstage-y += ../common/mt6315.c mt6315.c
 ramstage-y += ../common/mt6359p.c mt6359p.c
 ramstage-y += ../common/mtcmos.c mtcmos.c
 ramstage-y += ../common/pmif.c ../common/pmif_clk.c ../common/pmif_init.c pmif_clk.c
diff --git a/src/soc/mediatek/mt8189/mt6315.c b/src/soc/mediatek/mt8189/mt6315.c
new file mode 100644
index 0000000000..9968569008
--- /dev/null
+++ b/src/soc/mediatek/mt8189/mt6315.c
@@ -0,0 +1,209 @@
+/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
+
+#include <soc/mt6315.h>
+
+/*
+ * These values are used by MediaTek internally.
+ * We can find these registers in "MT6315 datasheet v1.3.pdf".
+ * The setting values are provided by MediaTek designers.
+ */
+
+static const struct mt6315_setting slave7_init_setting[] = {
+	/* disable magic key protection */
+	{0x3A9, 0x63, 0xFF, 0},
+	{0x3A8, 0x15, 0xFF, 0},
+	{0x3A0, 0x9C, 0xFF, 0},
+	{0x39F, 0xEA, 0xFF, 0},
+	{0x993, 0x47, 0xFF, 0},
+	{0x992, 0x29, 0xFF, 0},
+	{0x1418, 0x55, 0xFF, 0},
+	{0x1417, 0x43, 0xFF, 0},
+	{0x3A2, 0x2A, 0xFF, 0},
+	{0x3A1, 0x7C, 0xFF, 0},
+
+	{0x13, 0x2, 0x2, 0},
+	{0x15, 0x1F, 0x1F, 0},
+	{0x22, 0x12, 0x12, 0},
+	{0x8A, 0x6, 0xF, 0},
+	{0x10B, 0x3, 0x3, 0},
+	{0x38B, 0x4, 0xFF, 0},
+	{0x3AD, 0xA2, 0xFF, 0},
+	{0xA07, 0x0, 0x1, 0},
+	{0x1457, 0x0, 0xFF, 0},
+	{0x997, 0xF, 0x7F, 0},
+	{0x999, 0xF0, 0xF0, 0},
+	{0x9A0, 0x2, 0x1F, 0},
+	{0x9A1, 0x2, 0x1F, 0},
+	{0x9A2, 0x0, 0x1F, 0},
+	{0x9A3, 0x3, 0x1F, 0},
+	{0xA0C, 0x0, 0x78, 0},
+	{0xA11, 0x1, 0x1F, 0},
+	{0xA1A, 0x1F, 0x1F, 0},
+	{0x1487, 0x58, 0xFF, 0},
+	{0x148B, 0x1, 0x7F, 0},
+	{0x148C, 0x4, 0x7F, 0},
+	{0x1507, 0x58, 0xFF, 0},
+	{0x150B, 0x1, 0x7F, 0},
+	{0x150C, 0x4, 0x7F, 0},
+	{0x1587, 0xA8, 0xFF, 0},
+	{0x158B, 0x4, 0x7F, 0},
+	{0x158C, 0x4, 0x7F, 0},
+	{0x1607, 0x51, 0xFF, 0},
+	{0x160B, 0x4, 0x7F, 0},
+	{0x160C, 0x4, 0x7F, 0},
+	{0x1687, 0x22, 0x76, 0},
+	{0x1688, 0xE, 0x2F, 0},
+	{0x1689, 0xA1, 0xE1, 0},
+	{0x168A, 0x79, 0x7F, 0},
+	{0x168B, 0x12, 0x3F, 0},
+	{0x168D, 0xC, 0xC, 0},
+	{0x168E, 0xD7, 0xFF, 0},
+	{0x168F, 0x81, 0xFF, 0},
+	{0x1690, 0x3, 0x3F, 0},
+	{0x1691, 0x22, 0x76, 0},
+	{0x1692, 0xE, 0x2F, 0},
+	{0x1693, 0xA1, 0xE1, 0},
+	{0x1694, 0x79, 0x7F, 0},
+	{0x1695, 0x12, 0x3F, 0},
+	{0x1697, 0xC, 0xC, 0},
+	{0x1698, 0xD7, 0xFF, 0},
+	{0x1699, 0x81, 0xFF, 0},
+	{0x169A, 0x3, 0x3F, 0},
+	{0x169B, 0x20, 0x70, 0},
+	{0x169C, 0xE, 0x2F, 0},
+	{0x169D, 0x81, 0xC1, 0},
+	{0x169E, 0xF8, 0xF8, 0},
+	{0x169F, 0x12, 0x3F, 0},
+	{0x16A1, 0xC, 0xC, 0},
+	{0x16A2, 0xDB, 0xFF, 0},
+	{0x16A3, 0xA1, 0xFF, 0},
+	{0x16A4, 0x3, 0xF, 0},
+	{0x16A5, 0x20, 0x70, 0},
+	{0x16A6, 0xE, 0x2F, 0},
+	{0x16A7, 0x80, 0xC1, 0},
+	{0x16A8, 0xF8, 0xF8, 0},
+	{0x16A9, 0x12, 0x3F, 0},
+	{0x16AB, 0xC, 0xC, 0},
+	{0x16AC, 0xDB, 0xFF, 0},
+	{0x16AD, 0xA1, 0xFF, 0},
+	{0x16AE, 0x1, 0xF, 0},
+	{0x16CE, 0x8, 0x8, 0},
+	/* enable magic key protection */
+	{0x3A9, 0, 0xFF, 0},
+	{0x3A8, 0, 0xFF, 0},
+	{0x3A0, 0, 0xFF, 0},
+	{0x39F, 0, 0xFF, 0},
+	{0x993, 0, 0xFF, 0},
+	{0x992, 0, 0xFF, 0},
+	{0x1418, 0, 0xFF, 0},
+	{0x1417, 0, 0xFF, 0},
+	{0x3a2, 0, 0xFF, 0},
+	{0x3a1, 0, 0xFF, 0},
+};
+
+static const struct mt6315_setting slave8_init_setting[] = {
+	/* disable magic key protection */
+	{0x3A9, 0x63, 0xFF, 0},
+	{0x3A8, 0x15, 0xFF, 0},
+	{0x3A0, 0x9C, 0xFF, 0},
+	{0x39F, 0xEA, 0xFF, 0},
+	{0x993, 0x47, 0xFF, 0},
+	{0x992, 0x29, 0xFF, 0},
+	{0x1418, 0x55, 0xFF, 0},
+	{0x1417, 0x43, 0xFF, 0},
+	{0x3a2, 0x2A, 0xFF, 0},
+	{0x3a1, 0x7C, 0xFF, 0},
+
+	{0x13, 0x2, 0x2, 0},
+	{0x15, 0x1F, 0x1F, 0},
+	{0x22, 0x12, 0x12, 0},
+	{0x8A, 0x6, 0xF, 0},
+	{0x10B, 0x3, 0x3, 0},
+	{0x38B, 0x4, 0xFF, 0},
+	{0x3AD, 0xA2, 0xFF, 0},
+	{0xA07, 0x0, 0x1, 0},
+	{0x1457, 0x0, 0xFF, 0},
+	{0x997, 0xB, 0x7F, 0},
+	{0x999, 0xF0, 0xF0, 0},
+	{0x9A0, 0x1, 0x1F, 0},
+	{0x9A1, 0x1, 0x1F, 0},
+	{0x9A2, 0x0, 0x1F, 0},
+	{0x9A3, 0x1, 0x1F, 0},
+	{0xA0C, 0x0, 0x78, 0},
+	{0xA11, 0x1, 0x1F, 0},
+	{0xA1A, 0x1F, 0x1F, 0},
+	{0x1487, 0x58, 0xFF, 0},
+	{0x148B, 0x1, 0x7F, 0},
+	{0x148C, 0x4, 0x7F, 0},
+	{0x1507, 0x58, 0xFF, 0},
+	{0x150B, 0x1, 0x7F, 0},
+	{0x150C, 0x4, 0x7F, 0},
+	{0x1587, 0x92, 0xFF, 0},
+	{0x158B, 0x4, 0x7F, 0},
+	{0x158C, 0x4, 0x7F, 0},
+	{0x1607, 0x58, 0xFF, 0},
+	{0x160B, 0x1, 0x7F, 0},
+	{0x160C, 0x4, 0x7F, 0},
+	{0x1687, 0x22, 0x76, 0},
+	{0x1688, 0xE, 0x2F, 0},
+	{0x1689, 0xA1, 0xE1, 0},
+	{0x168A, 0x79, 0x7F, 0},
+	{0x168B, 0x12, 0x3F, 0},
+	{0x168D, 0xC, 0xC, 0},
+	{0x168E, 0xD7, 0xFF, 0},
+	{0x168F, 0x81, 0xFF, 0},
+	{0x1690, 0x3, 0x3F, 0},
+	{0x1691, 0x22, 0x76, 0},
+	{0x1692, 0xE, 0x2F, 0},
+	{0x1693, 0xA1, 0xE1, 0},
+	{0x1694, 0x79, 0x7F, 0},
+	{0x1695, 0x12, 0x3F, 0},
+	{0x1697, 0xC, 0xC, 0},
+	{0x1698, 0xD7, 0xFF, 0},
+	{0x1699, 0x81, 0xFF, 0},
+	{0x169A, 0x3, 0x3F, 0},
+	{0x169B, 0x20, 0x70, 0},
+	{0x169C, 0xE, 0x2F, 0},
+	{0x169D, 0x81, 0xC1, 0},
+	{0x169E, 0xF8, 0xF8, 0},
+	{0x169F, 0x12, 0x3F, 0},
+	{0x16A1, 0xC, 0xC, 0},
+	{0x16A2, 0xDB, 0xFF, 0},
+	{0x16A3, 0xA1, 0xFF, 0},
+	{0x16A4, 0x3, 0xF, 0},
+	{0x16A5, 0x22, 0x76, 0},
+	{0x16A6, 0xE, 0x2F, 0},
+	{0x16A7, 0xA1, 0xE1, 0},
+	{0x16A8, 0x79, 0x7F, 0},
+	{0x16A9, 0x12, 0x3F, 0},
+	{0x16AB, 0xC, 0xC, 0},
+	{0x16AC, 0xD7, 0xFF, 0},
+	{0x16AD, 0x81, 0xFF, 0},
+	{0x16AE, 0x3, 0x3F, 0},
+	{0x16C7, 0x8, 0x8, 0},
+	/* enable magic key protection */
+	{0x3A9, 0, 0xFF, 0},
+	{0x3A8, 0, 0xFF, 0},
+	{0x3A0, 0, 0xFF, 0},
+	{0x39F, 0, 0xFF, 0},
+	{0x993, 0, 0xFF, 0},
+	{0x992, 0, 0xFF, 0},
+	{0x1418, 0, 0xFF, 0},
+	{0x1417, 0, 0xFF, 0},
+	{0x3a2, 0, 0xFF, 0},
+	{0x3a1, 0, 0xFF, 0},
+};
+
+static inline void write_field(enum spmi_slave slvid, const struct mt6315_setting *setting)
+{
+	mt6315_write_field(slvid, setting->addr, setting->val, setting->mask, setting->shift);
+}
+
+void mt6315_init_setting(void)
+{
+	for (size_t i = 0; i < ARRAY_SIZE(slave7_init_setting); i++)
+		write_field(SPMI_SLAVE_7, &slave7_init_setting[i]);
+
+	for (size_t i = 0; i < ARRAY_SIZE(slave8_init_setting); i++)
+		write_field(SPMI_SLAVE_8, &slave8_init_setting[i]);
+}