diff --git a/src/soc/amd/cezanne/early_fch.c b/src/soc/amd/cezanne/early_fch.c
index 586e80cbd0..3addcf8c5d 100644
--- a/src/soc/amd/cezanne/early_fch.c
+++ b/src/soc/amd/cezanne/early_fch.c
@@ -20,6 +20,12 @@ static const struct soc_i2c_scl_pin i2c_scl_pins[] = {
 	I2C_RESET_SCL_PIN(I2C3_SCL_PIN, GPIO_I2C3_SCL),
 };
 
+static void lpc_configure_decodes(void)
+{
+	if (CONFIG(POST_IO) && (CONFIG_POST_IO_PORT == 0x80))
+		lpc_enable_port80();
+}
+
 static void reset_i2c_peripherals(void)
 {
 	const struct soc_amd_cezanne_config *cfg = config_of_soc();
@@ -45,6 +51,9 @@ void fch_pre_init(void)
 	if (CONFIG(SOC_AMD_COMMON_BLOCK_USE_ESPI) && !CONFIG(VBOOT_STARTS_BEFORE_BOOTBLOCK))
 		configure_espi_with_mb_hook();
 
+	if (!CONFIG(SOC_AMD_COMMON_BLOCK_USE_ESPI))
+		lpc_configure_decodes();
+
 	fch_spi_early_init();
 	fch_smbus_init();
 	fch_enable_cf9_io();