diff --git a/board/nvidia/cardhu/cardhu.c b/board/nvidia/cardhu/cardhu.c
index ee56497..6848e34 100644
--- a/board/nvidia/cardhu/cardhu.c
+++ b/board/nvidia/cardhu/cardhu.c
@@ -11,6 +11,7 @@
 #include <asm/arch/gp_padctrl.h>
 #include <asm/arch/gpio.h>
 #include <asm/gpio.h>
+#include <linux/delay.h>
 #include "pinmux-config-cardhu.h"
 #include <i2c.h>
 
diff --git a/board/nvidia/nyan-big/nyan-big.c b/board/nvidia/nyan-big/nyan-big.c
index 6464e86..71c71ed 100644
--- a/board/nvidia/nyan-big/nyan-big.c
+++ b/board/nvidia/nyan-big/nyan-big.c
@@ -15,6 +15,7 @@
 #include <asm/arch/mc.h>
 #include <asm/arch-tegra/clk_rst.h>
 #include <asm/arch-tegra/pmc.h>
+#include <linux/delay.h>
 #include <power/as3722.h>
 #include <power/pmic.h>
 #include "pinmux-config-nyan-big.h"
diff --git a/board/nvidia/venice2/as3722_init.c b/board/nvidia/venice2/as3722_init.c
index 15fba13..ba67654 100644
--- a/board/nvidia/venice2/as3722_init.c
+++ b/board/nvidia/venice2/as3722_init.c
@@ -8,6 +8,7 @@
 #include <log.h>
 #include <asm/io.h>
 #include <asm/arch-tegra/tegra_i2c.h>
+#include <linux/delay.h>
 #include "as3722_init.h"
 
 /* AS3722-PMIC-specific early init code - get CPU rails up, etc */