diff --git a/conf/linux_defconfig b/conf/linux_defconfig
index fb8386b..e9b439d 100644
--- a/conf/linux_defconfig
+++ b/conf/linux_defconfig
@@ -75,6 +75,8 @@ CONFIG_CLK_U54_PRCI=y
 CONFIG_MICROSEMI_PHY=y
 CONFIG_I2C=y
 CONFIG_I2C_OCORES=y
+CONFIG_HWMON=y
+CONFIG_PMBUS=y
 CONFIG_EEPROM_AT24=y
 CONFIG_SPI=y
 CONFIG_SPI_SIFIVE=y
diff --git a/conf/linux_framebuffer_smp b/conf/linux_framebuffer_smp
index dd02bd5..3a1ff82 100644
--- a/conf/linux_framebuffer_smp
+++ b/conf/linux_framebuffer_smp
@@ -93,6 +93,8 @@ CONFIG_CLK_U54_PRCI=y
 CONFIG_MICROSEMI_PHY=y
 CONFIG_I2C=y
 CONFIG_I2C_OCORES=y
+CONFIG_HWMON=y
+CONFIG_PMBUS=y
 CONFIG_EEPROM_AT24=y
 CONFIG_SPI=y
 CONFIG_SPI_SIFIVE=y