diff --git a/drivers/clk/aspeed/clk_ast2500.c b/drivers/clk/aspeed/clk_ast2500.c
index e5b07c7..ccfeded 100644
--- a/drivers/clk/aspeed/clk_ast2500.c
+++ b/drivers/clk/aspeed/clk_ast2500.c
@@ -11,6 +11,7 @@
 #include <asm/arch/scu_ast2500.h>
 #include <dm/lists.h>
 #include <dt-bindings/clock/ast2500-scu.h>
+#include <linux/delay.h>
 #include <linux/err.h>
 
 /*
diff --git a/drivers/clk/clk-hsdk-cgu.c b/drivers/clk/clk-hsdk-cgu.c
index da50a79..42844d4 100644
--- a/drivers/clk/clk-hsdk-cgu.c
+++ b/drivers/clk/clk-hsdk-cgu.c
@@ -15,6 +15,7 @@
 #include <dm.h>
 #include <log.h>
 #include <linux/bug.h>
+#include <linux/delay.h>
 #include <linux/io.h>
 #include <asm/arcregs.h>
 
diff --git a/drivers/clk/imx/clk-pll14xx.c b/drivers/clk/imx/clk-pll14xx.c
index 1673eb2..c526fc1 100644
--- a/drivers/clk/imx/clk-pll14xx.c
+++ b/drivers/clk/imx/clk-pll14xx.c
@@ -12,6 +12,7 @@
 #include <dm/device.h>
 #include <dm/devres.h>
 #include <linux/clk-provider.h>
+#include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/iopoll.h>
 #include <clk.h>
diff --git a/drivers/clk/mediatek/clk-mtk.c b/drivers/clk/mediatek/clk-mtk.c
index c52537c..671d4b3 100644
--- a/drivers/clk/mediatek/clk-mtk.c
+++ b/drivers/clk/mediatek/clk-mtk.c
@@ -11,6 +11,7 @@
 #include <div64.h>
 #include <dm.h>
 #include <asm/io.h>
+#include <linux/delay.h>
 
 #include "clk-mtk.h"
 
diff --git a/drivers/clk/meson/g12a.c b/drivers/clk/meson/g12a.c
index c9918c1..c540bb0 100644
--- a/drivers/clk/meson/g12a.c
+++ b/drivers/clk/meson/g12a.c
@@ -15,6 +15,7 @@
 #include <syscon.h>
 #include <div64.h>
 #include <dt-bindings/clock/g12a-clkc.h>
+#include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/kernel.h>
 #include "clk_meson.h"
diff --git a/drivers/clk/owl/clk_owl.c b/drivers/clk/owl/clk_owl.c
index 5607b2b..11b8da1 100644
--- a/drivers/clk/owl/clk_owl.c
+++ b/drivers/clk/owl/clk_owl.c
@@ -17,6 +17,7 @@
 #include <asm/arch-owl/regs_s700.h>
 #include <dt-bindings/clock/actions,s700-cmu.h>
 #endif
+#include <linux/delay.h>
 
 void owl_clk_init(struct owl_clk_priv *priv)
 {
diff --git a/drivers/clk/rockchip/clk_pll.c b/drivers/clk/rockchip/clk_pll.c
index 6dab509..83d45c7 100644
--- a/drivers/clk/rockchip/clk_pll.c
+++ b/drivers/clk/rockchip/clk_pll.c
@@ -12,6 +12,7 @@
 #include <asm/arch-rockchip/clock.h>
 #include <asm/arch-rockchip/hardware.h>
 #include <div64.h>
+#include <linux/delay.h>
 
 static struct rockchip_pll_rate_table rockchip_auto_table;
 
diff --git a/drivers/clk/rockchip/clk_px30.c b/drivers/clk/rockchip/clk_px30.c
index 04d85b4..b5b46e3 100644
--- a/drivers/clk/rockchip/clk_px30.c
+++ b/drivers/clk/rockchip/clk_px30.c
@@ -17,6 +17,7 @@
 #include <asm/io.h>
 #include <dm/lists.h>
 #include <dt-bindings/clock/px30-cru.h>
+#include <linux/delay.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
diff --git a/drivers/clk/rockchip/clk_rk3036.c b/drivers/clk/rockchip/clk_rk3036.c
index 2769652..274572f 100644
--- a/drivers/clk/rockchip/clk_rk3036.c
+++ b/drivers/clk/rockchip/clk_rk3036.c
@@ -16,6 +16,7 @@
 #include <asm/arch-rockchip/hardware.h>
 #include <dm/lists.h>
 #include <dt-bindings/clock/rk3036-cru.h>
+#include <linux/delay.h>
 #include <linux/log2.h>
 #include <linux/stringify.h>
 
diff --git a/drivers/clk/rockchip/clk_rk3128.c b/drivers/clk/rockchip/clk_rk3128.c
index 6d19748..61f823e 100644
--- a/drivers/clk/rockchip/clk_rk3128.c
+++ b/drivers/clk/rockchip/clk_rk3128.c
@@ -17,6 +17,7 @@
 #include <bitfield.h>
 #include <dm/lists.h>
 #include <dt-bindings/clock/rk3128-cru.h>
+#include <linux/delay.h>
 #include <linux/log2.h>
 
 enum {
diff --git a/drivers/clk/rockchip/clk_rk3188.c b/drivers/clk/rockchip/clk_rk3188.c
index d4df817..11e3bd3 100644
--- a/drivers/clk/rockchip/clk_rk3188.c
+++ b/drivers/clk/rockchip/clk_rk3188.c
@@ -22,6 +22,7 @@
 #include <dm/device-internal.h>
 #include <dm/lists.h>
 #include <dm/uclass-internal.h>
+#include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/log2.h>
 #include <linux/stringify.h>
diff --git a/drivers/clk/rockchip/clk_rk322x.c b/drivers/clk/rockchip/clk_rk322x.c
index 68c1fbd..912e1f6 100644
--- a/drivers/clk/rockchip/clk_rk322x.c
+++ b/drivers/clk/rockchip/clk_rk322x.c
@@ -16,6 +16,7 @@
 #include <asm/arch-rockchip/hardware.h>
 #include <dm/lists.h>
 #include <dt-bindings/clock/rk3228-cru.h>
+#include <linux/delay.h>
 #include <linux/log2.h>
 #include <linux/stringify.h>
 
diff --git a/drivers/clk/rockchip/clk_rk3288.c b/drivers/clk/rockchip/clk_rk3288.c
index b4514bc..3b199bb 100644
--- a/drivers/clk/rockchip/clk_rk3288.c
+++ b/drivers/clk/rockchip/clk_rk3288.c
@@ -23,6 +23,7 @@
 #include <dm/device-internal.h>
 #include <dm/lists.h>
 #include <dm/uclass-internal.h>
+#include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/log2.h>
 #include <linux/stringify.h>
diff --git a/drivers/clk/rockchip/clk_rk3328.c b/drivers/clk/rockchip/clk_rk3328.c
index 28613a9..6d692ec 100644
--- a/drivers/clk/rockchip/clk_rk3328.c
+++ b/drivers/clk/rockchip/clk_rk3328.c
@@ -18,6 +18,7 @@
 #include <asm/io.h>
 #include <dm/lists.h>
 #include <dt-bindings/clock/rk3328-cru.h>
+#include <linux/delay.h>
 
 struct pll_div {
 	u32 refdiv;
diff --git a/drivers/clk/rockchip/clk_rk3368.c b/drivers/clk/rockchip/clk_rk3368.c
index 34466b8..d1804c6 100644
--- a/drivers/clk/rockchip/clk_rk3368.c
+++ b/drivers/clk/rockchip/clk_rk3368.c
@@ -21,6 +21,7 @@
 #include <asm/io.h>
 #include <dm/lists.h>
 #include <dt-bindings/clock/rk3368-cru.h>
+#include <linux/delay.h>
 #include <linux/stringify.h>
 
 #if CONFIG_IS_ENABLED(OF_PLATDATA)
diff --git a/drivers/clk/rockchip/clk_rk3399.c b/drivers/clk/rockchip/clk_rk3399.c
index dd2834f..2c58814 100644
--- a/drivers/clk/rockchip/clk_rk3399.c
+++ b/drivers/clk/rockchip/clk_rk3399.c
@@ -20,6 +20,7 @@
 #include <asm/arch-rockchip/hardware.h>
 #include <dm/lists.h>
 #include <dt-bindings/clock/rk3399-cru.h>
+#include <linux/delay.h>
 
 #if CONFIG_IS_ENABLED(OF_PLATDATA)
 struct rk3399_clk_plat {
diff --git a/drivers/clk/rockchip/clk_rv1108.c b/drivers/clk/rockchip/clk_rv1108.c
index c1d2724..aa1d98c 100644
--- a/drivers/clk/rockchip/clk_rv1108.c
+++ b/drivers/clk/rockchip/clk_rv1108.c
@@ -18,6 +18,7 @@
 #include <asm/arch-rockchip/hardware.h>
 #include <dm/lists.h>
 #include <dt-bindings/clock/rv1108-cru.h>
+#include <linux/delay.h>
 #include <linux/stringify.h>
 
 DECLARE_GLOBAL_DATA_PTR;
diff --git a/drivers/clk/sifive/fu540-prci.c b/drivers/clk/sifive/fu540-prci.c
index 8847178..67e21b6 100644
--- a/drivers/clk/sifive/fu540-prci.c
+++ b/drivers/clk/sifive/fu540-prci.c
@@ -35,6 +35,7 @@
 #include <div64.h>
 #include <dm.h>
 #include <errno.h>
+#include <linux/delay.h>
 #include <linux/err.h>
 
 #include <linux/math64.h>