diff --git a/src/mainboard/google/octopus/Kconfig b/src/mainboard/google/octopus/Kconfig
index 5718109..4df11e4 100644
--- a/src/mainboard/google/octopus/Kconfig
+++ b/src/mainboard/google/octopus/Kconfig
@@ -5,6 +5,7 @@
 	select BOARD_ROMSIZE_KB_16384
 	select DRIVERS_GENERIC_GPIO_KEYS
 	select DRIVERS_GENERIC_MAX98357A
+	select DRIVERS_I2C_CS42L42
 	select DRIVERS_I2C_DA7219
 	select DRIVERS_I2C_GENERIC
 	select DRIVERS_I2C_HID
diff --git a/src/mainboard/google/octopus/mainboard.c b/src/mainboard/google/octopus/mainboard.c
index b8579ac..e565f28 100644
--- a/src/mainboard/google/octopus/mainboard.c
+++ b/src/mainboard/google/octopus/mainboard.c
@@ -37,6 +37,7 @@
 #include <variant/gpio.h>
 
 extern struct chip_operations drivers_i2c_generic_ops;
+extern struct chip_operations drivers_i2c_cs42l42_ops;
 extern struct chip_operations drivers_i2c_da7219_ops;
 
 static bool is_cnvi_held_in_reset(void)
@@ -212,6 +213,13 @@
 				continue;
 			}
 		}
+
+		if ((audio_dev->chip_ops == &drivers_i2c_cs42l42_ops) &&
+			(codec == SSFC_AUDIO_CODEC_CS42L42)) {
+			printk(BIOS_INFO, "enable CS42L42.\n");
+			continue;
+		}
+
 		printk(BIOS_INFO, "%s has been disabled\n", audio_dev->chip_ops->name);
 		audio_dev->enabled = 0;
 	}
diff --git a/src/mainboard/google/octopus/variants/baseboard/include/baseboard/cbi_ssfc.h b/src/mainboard/google/octopus/variants/baseboard/include/baseboard/cbi_ssfc.h
index 84020d7..cef047a 100644
--- a/src/mainboard/google/octopus/variants/baseboard/include/baseboard/cbi_ssfc.h
+++ b/src/mainboard/google/octopus/variants/baseboard/include/baseboard/cbi_ssfc.h
@@ -29,6 +29,7 @@
 	SSFC_AUDIO_CODEC_DEFAULT,
 	SSFC_AUDIO_CODEC_DA7219,
 	SSFC_AUDIO_CODEC_RT5682,
+	SSFC_AUDIO_CODEC_CS42L42,
 };
 #define SSFC_AUDIO_CODEC_OFFSET		9
 #define SSFC_AUDIO_CODEC_MASK		0x7
diff --git a/src/mainboard/google/octopus/variants/fleex/gpio.c b/src/mainboard/google/octopus/variants/fleex/gpio.c
index c383630..cf0c488 100644
--- a/src/mainboard/google/octopus/variants/fleex/gpio.c
+++ b/src/mainboard/google/octopus/variants/fleex/gpio.c
@@ -29,7 +29,8 @@
 	PAD_CFG_GPO(GPIO_117, 1, PWROK),
 
 	PAD_NC(GPIO_143, UP_20K),
-	PAD_NC(GPIO_144, UP_20K),
+	/* GPIO_144 -- Codec reset pin. */
+	PAD_CFG_GPO(GPIO_144, 1, PWROK),
 	PAD_NC(GPIO_145, UP_20K),
 
 	/* EN_PP3300_TOUCHSCREEN */
diff --git a/src/mainboard/google/octopus/variants/fleex/overridetree.cb b/src/mainboard/google/octopus/variants/fleex/overridetree.cb
index 77cce86..9c321a7 100644
--- a/src/mainboard/google/octopus/variants/fleex/overridetree.cb
+++ b/src/mainboard/google/octopus/variants/fleex/overridetree.cb
@@ -122,6 +122,21 @@
 				register "mic_amp_in_sel" = ""diff""
 				device i2c 1a on end
 			end
+			chip drivers/i2c/cs42l42
+				register "irq" = "ACPI_IRQ_LEVEL_LOW(GPIO_137_IRQ)"
+				register "reset_gpio" = "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPIO_144)"
+				register "ts_inv" = "true"
+				register "ts_dbnc_rise" = "RISE_DEB_1000_MS"
+				register "ts_dbnc_fall" = "FALL_DEB_0_MS"
+				register "btn_det_init_dbnce" = "100"
+				register "btn_det_event_dbnce" = "10"
+				register "bias_lvls[0]" = "15"
+				register "bias_lvls[1]" = "8"
+				register "bias_lvls[2]" = "4"
+				register "bias_lvls[3]" = "1"
+				register "hs_bias_ramp_rate" = "HSBIAS_RAMP_SLOW"
+				device i2c 48 on end
+ 			end
 		end	# - I2C 5
 		device pci 17.2 on
 			chip drivers/i2c/generic