diff --git a/conf/linux_defconfig b/conf/linux_defconfig
index 0a7524c..2dbd7c8 100644
--- a/conf/linux_defconfig
+++ b/conf/linux_defconfig
@@ -87,3 +87,5 @@ CONFIG_GPIOLIB=y
 CONFIG_GPIO_SIFIVE=y
 CONFIG_POWER_RESET=y
 CONFIG_POWER_RESET_GPIO_RESTART=y
+CONFIG_NVMEM=y
+CONFIG_NVMEM_SIFIVE_U500_OTP=y
diff --git a/conf/linux_framebuffer_smp b/conf/linux_framebuffer_smp
index 62f7f86..242379f 100644
--- a/conf/linux_framebuffer_smp
+++ b/conf/linux_framebuffer_smp
@@ -105,6 +105,8 @@ CONFIG_GPIOLIB=y
 CONFIG_GPIO_SIFIVE=y
 CONFIG_POWER_RESET=y
 CONFIG_POWER_RESET_GPIO_RESTART=y
+CONFIG_NVMEM=y
+CONFIG_NVMEM_SIFIVE_U500_OTP=y
 
 CONFIG_VT=y
 CONFIG_DRM=y