diff --git a/src/mainboard/clevo/tgl-u/Kconfig b/src/mainboard/clevo/tgl-u/Kconfig
index ecdd7c123f..fbede8e252 100644
--- a/src/mainboard/clevo/tgl-u/Kconfig
+++ b/src/mainboard/clevo/tgl-u/Kconfig
@@ -20,6 +20,7 @@ config BOARD_CLEVO_TGLU_COMMON
 
 config BOARD_CLEVO_L140MU
 	select BOARD_CLEVO_TGLU_COMMON
+	select EC_CLEVO_IT5570E
 	select HAVE_SPD_IN_CBFS
 
 if BOARD_CLEVO_TGLU_COMMON
@@ -60,4 +61,7 @@ config SEABIOS_PS2_TIMEOUT
 config USE_PM_ACPI_TIMER
 	default n
 
+config EC_CLEVO_IT5570E_MEM_BASE
+	default 0xfe0b0000
+
 endif
diff --git a/src/mainboard/clevo/tgl-u/Makefile.inc b/src/mainboard/clevo/tgl-u/Makefile.inc
index 2909300f64..0d57383595 100644
--- a/src/mainboard/clevo/tgl-u/Makefile.inc
+++ b/src/mainboard/clevo/tgl-u/Makefile.inc
@@ -1,4 +1,5 @@
 CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/include
+CPPFLAGS_common += -I$(src)/mainboard/$(MAINBOARDDIR)/variants/$(VARIANT_DIR)/acpi
 
 bootblock-y += bootblock.c
 bootblock-y += variants/$(VARIANT_DIR)/gpio_early.c
@@ -10,5 +11,8 @@ ramstage-y += ramstage.c
 ramstage-y += variants/$(VARIANT_DIR)/ramstage.c
 ramstage-y += variants/$(VARIANT_DIR)/gpio.c
 ramstage-y += variants/$(VARIANT_DIR)/hda_verb.c
+ramstage-$(CONFIG_HAVE_ACPI_TABLES) += fadt.c
+
+smm-$(CONFIG_EC_CLEVO_IT5570E) += smihandler.c
 
 subdirs-y += variants/$(VARIANT_DIR)
diff --git a/src/mainboard/clevo/tgl-u/bootblock.c b/src/mainboard/clevo/tgl-u/bootblock.c
index b351fbd8ef..ee6c0b31ce 100644
--- a/src/mainboard/clevo/tgl-u/bootblock.c
+++ b/src/mainboard/clevo/tgl-u/bootblock.c
@@ -1,9 +1,21 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <bootblock_common.h>
+#include <ec/clevo/it5570e/early_init.h>
+#include <intelblocks/lpc_lib.h>
 #include <variant/gpio.h>
 
 void bootblock_mainboard_early_init(void)
 {
 	variant_configure_early_gpios();
+
+	/* Open LGMR window for EC */
+	if (CONFIG(EC_CLEVO_IT5570E))
+		lpc_open_mmio_window(CONFIG_EC_CLEVO_IT5570E_MEM_BASE, 64 * KiB);
+}
+
+void bootblock_mainboard_init(void)
+{
+	if (CONFIG(EC_CLEVO_IT5570E))
+		ec_configure_kbled_booteffect();
 }
diff --git a/src/mainboard/clevo/tgl-u/cmos.default b/src/mainboard/clevo/tgl-u/cmos.default
index f3330e5070..a20f1b187a 100644
--- a/src/mainboard/clevo/tgl-u/cmos.default
+++ b/src/mainboard/clevo/tgl-u/cmos.default
@@ -1,3 +1,14 @@
 boot_option=Fallback
 debug_level=Debug
 power_on_after_fail=Disable
+
+# EC options
+ac_fan_always_on=Disable
+camera_boot_state=Keep
+fn_win_swap=Disable
+tp_toggle_mode=CtrlAltF9
+flexicharger_on=Disable
+flexicharger_start=95
+flexicharger_stop=100
+kbled_booteffect=Disable
+kbled_timeout=15
diff --git a/src/mainboard/clevo/tgl-u/cmos.layout b/src/mainboard/clevo/tgl-u/cmos.layout
index 4f76221f91..b31964f0a9 100644
--- a/src/mainboard/clevo/tgl-u/cmos.layout
+++ b/src/mainboard/clevo/tgl-u/cmos.layout
@@ -19,6 +19,20 @@ entries
 # coreboot config options: southbridge
 410		  2	e	7		power_on_after_fail
 
+# -----------------------------------------------------------------
+# EC options
+500		  1	e	1		ac_fan_always_on
+502		  2	e	7		camera_boot_state
+504		  1	e	1		fn_win_swap
+505		  1	e	8		tp_toggle_mode
+
+519		  1	e	1		flexicharger_on
+520		  8	h	0		flexicharger_start
+528		  8	h	0		flexicharger_stop
+
+543		  1	e	1		kbled_booteffect
+544		 16	h	0		kbled_timeout
+
 # -----------------------------------------------------------------
 # vboot nv area
 800		128	r	0		vbnv
@@ -50,6 +64,8 @@ enumerations
 7	0	Disable
 7	1	Enable
 7	2	Keep
+8	0	CtrlAltF9
+8	1	KeycodeF7F8
 
 # -----------------------------------------------------------------
 checksums
diff --git a/src/mainboard/clevo/tgl-u/dsdt.asl b/src/mainboard/clevo/tgl-u/dsdt.asl
index ac02fe9d6d..10ad9df6d9 100644
--- a/src/mainboard/clevo/tgl-u/dsdt.asl
+++ b/src/mainboard/clevo/tgl-u/dsdt.asl
@@ -29,4 +29,9 @@ DefinitionBlock(
 	}
 
 	#include <southbridge/intel/common/acpi/sleepstates.asl>
+
+#if CONFIG(EC_CLEVO_IT5570E)
+	#include <variant.asl>
+	#include <ec/clevo/it5570e/acpi/common.asl>
+#endif
 }
diff --git a/src/mainboard/clevo/tgl-u/fadt.c b/src/mainboard/clevo/tgl-u/fadt.c
new file mode 100644
index 0000000000..28ed7e97c3
--- /dev/null
+++ b/src/mainboard/clevo/tgl-u/fadt.c
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <acpi/acpi.h>
+#include <intelblocks/acpi.h>
+
+void mainboard_fill_fadt(acpi_fadt_t *fadt)
+{
+	/* Control method power button (EC) */
+	fadt->flags |= ACPI_FADT_POWER_BUTTON;
+}
diff --git a/src/mainboard/clevo/tgl-u/smihandler.c b/src/mainboard/clevo/tgl-u/smihandler.c
new file mode 100644
index 0000000000..e53ab452a6
--- /dev/null
+++ b/src/mainboard/clevo/tgl-u/smihandler.c
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <console/console.h>
+#include <cpu/x86/smm.h>
+#include <ec/clevo/it5570e/smm.h>
+#include <intelblocks/smihandler.h>
+
+void mainboard_smi_sleep(u8 slp_typ)
+{
+	printk(BIOS_DEBUG, "Mainboard SMI sleep handler: %02x\n", slp_typ);
+	ec_smi_sleep(slp_typ);
+}
+
+int mainboard_smi_apmc(u8 apmc)
+{
+	printk(BIOS_DEBUG, "Mainboard SMI APMC handler: %02x\n", apmc);
+	ec_smi_apmc(apmc);
+
+	return 0;
+}
diff --git a/src/mainboard/clevo/tgl-u/variants/l140mu/acpi/variant.asl b/src/mainboard/clevo/tgl-u/variants/l140mu/acpi/variant.asl
new file mode 100644
index 0000000000..705769aa23
--- /dev/null
+++ b/src/mainboard/clevo/tgl-u/variants/l140mu/acpi/variant.asl
@@ -0,0 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#define EC_GPE_SCI	GPE0_ESPI	/* eSPI SCI */
+#define EC_GPE_PWRB	GPE0_DW2_03	/* GPD3 */
+#define EC_GPE_SLPB	GPE0_PME	/* PME via eSPI */
+#define EC_GPE_LID	GPE0_PME	/* PME via eSPI */
diff --git a/src/mainboard/clevo/tgl-u/variants/l140mu/devicetree.cb b/src/mainboard/clevo/tgl-u/variants/l140mu/devicetree.cb
index 211ad4bb54..e194ba6473 100644
--- a/src/mainboard/clevo/tgl-u/variants/l140mu/devicetree.cb
+++ b/src/mainboard/clevo/tgl-u/variants/l140mu/devicetree.cb
@@ -203,6 +203,10 @@ chip soc/intel/tigerlake
 			end
 		end
 		device ref pch_espi on
+			chip ec/clevo/it5570e
+				device generic 0 on end
+				register "pl2_on_battery" = "15"
+			end
 			chip drivers/pc80/tpm
 				device pnp 0c31.0 on end
 			end