diff --git a/src/drivers/i2c/tpm/chip.c b/src/drivers/i2c/tpm/chip.c
index 07791c33a4..3a2f8aa544 100644
--- a/src/drivers/i2c/tpm/chip.c
+++ b/src/drivers/i2c/tpm/chip.c
@@ -11,6 +11,7 @@
 
 static void i2c_tpm_fill_ssdt(const struct device *dev)
 {
+	struct acpi_dp *dsd;
 	struct drivers_i2c_tpm_config *config = dev->chip_info;
 	const char *scope = acpi_device_scope(dev);
 	struct acpi_i2c i2c = {
@@ -47,6 +48,21 @@ static void i2c_tpm_fill_ssdt(const struct device *dev)
 
 	acpigen_write_resourcetemplate_footer();
 
+	/* _DSD, Device-Specific Data */
+	dsd = acpi_dp_new_table("_DSD");
+	switch (config->power_managed_mode) {
+	case TPM_FIRMWARE_POWER_MANAGED:
+		acpi_dp_add_integer(dsd, "firmware-power-managed", 1);
+		break;
+	case TPM_KERNEL_POWER_MANAGED:
+		acpi_dp_add_integer(dsd, "firmware-power-managed", 0);
+		break;
+	case TPM_DEFAULT_POWER_MANAGED:
+	default:
+		/* Leave firmware-power-managed unset */
+	}
+	acpi_dp_write(dsd);
+
 	acpigen_pop_len(); /* Device */
 	acpigen_pop_len(); /* Scope */
 
diff --git a/src/drivers/i2c/tpm/chip.h b/src/drivers/i2c/tpm/chip.h
index 0ab10d7560..4eac7e16f4 100644
--- a/src/drivers/i2c/tpm/chip.h
+++ b/src/drivers/i2c/tpm/chip.h
@@ -3,6 +3,12 @@
 #include <acpi/acpi_device.h>
 #include <device/i2c_simple.h>
 
+enum tpm_power_managed_mode {
+	TPM_DEFAULT_POWER_MANAGED = 0,
+	TPM_FIRMWARE_POWER_MANAGED,
+	TPM_KERNEL_POWER_MANAGED,
+};
+
 struct drivers_i2c_tpm_config {
 	const char *hid;	/* ACPI _HID (required) */
 	const char *desc;	/* Device Description */
@@ -10,4 +16,5 @@ struct drivers_i2c_tpm_config {
 	enum i2c_speed speed;	/* Bus speed in Hz, default is I2C_SPEED_FAST */
 	struct acpi_irq irq;	/* Interrupt */
 	struct acpi_gpio irq_gpio;	/* GPIO interrupt */
+	enum tpm_power_managed_mode power_managed_mode;	/* TPM power managed mode */
 };