diff --git a/share/man/man9/pwmbus.9 b/share/man/man9/pwmbus.9
--- a/share/man/man9/pwmbus.9
+++ b/share/man/man9/pwmbus.9
@@ -22,7 +22,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd June 21, 2019
+.Dd March 9, 2021
 .Dt PWMBUS 9
 .Os
 .Sh NAME
@@ -40,13 +40,13 @@
 .Cd "device pwm"
 .In "pwmbus_if.h"
 .Ft int
-.Fn PWMBUS_CHANNEL_CONFIG "device_t bus" "int channel" "uint64_t period" "uint64_t duty"
+.Fn PWMBUS_CHANNEL_CONFIG "device_t bus" "int channel" "u_int period" "u_int duty"
 .Ft int
 .Fn PWMBUS_CHANNEL_COUNT "device_t bus" "int channel" "int *nchannel"
 .Ft int
 .Fn PWMBUS_CHANNEL_ENABLE "device_t bus" "int channel" "bool enable"
 .Ft int
-.Fn PWMBUS_CHANNEL_GET_CONFIG "device_t bus" "int channel" "uint64_t *period" "uint64_t *duty"
+.Fn PWMBUS_CHANNEL_GET_CONFIG "device_t bus" "int channel" "u_int *period" "u_int *duty"
 .Ft int
 .Fn PWMBUS_CHANNEL_GET_FLAGS "device_t bus" "int channel" "uint32_t *flags"
 .Ft int
@@ -76,7 +76,7 @@
 details on channels that share resources.
 .Sh INTERFACE
 .Bl -tag -width indent
-.It Fn PWMBUS_CHANNEL_CONFIG "device_t bus" "int channel" "uint64_t period" "uint64_t duty"
+.It Fn PWMBUS_CHANNEL_CONFIG "device_t bus" "int channel" "u_int period" "u_int duty"
 Configure the period and duty (in nanoseconds) in the PWM controller on the bus
 for the specified channel.
 Returns 0 on success or
@@ -89,7 +89,7 @@
 Get the number of channels supported by the controller.
 .It Fn PWMBUS_CHANNEL_ENABLE "device_t bus" "int channel" "bool enable"
 Enable the PWM channel.
-.It Fn PWMBUS_CHANNEL_GET_CONFIG "device_t bus" "int channel" "uint64_t *period" "uint64_t *duty"
+.It Fn PWMBUS_CHANNEL_GET_CONFIG "device_t bus" "int channel" "u_int *period" "u_int *duty"
 Get the current configuration of the period and duty for the specified channel.
 .It Fn PWMBUS_CHANNEL_GET_FLAGS "device_t bus" "int channel" "uint32_t *flags"
 Get the current flags for the channel.