1 files changed, 25 insertions, 6 deletions

diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
index 8fc3808d7a3e..90c5c7357a50 100644
--- a/drivers/pwm/Kconfig
+++ b/drivers/pwm/Kconfig
@@ -1,12 +1,31 @@
 menuconfig PWM
-        bool "PWM Support"
+        bool "Pulse-Width Modulation (PWM) Support"
         depends on !MACH_JZ4740 && !PUV3_PWM
         help
-          This enables PWM support through the generic PWM framework.
-          You only need to enable this, if you also want to enable
-          one or more of the PWM drivers below.
-
-          If unsure, say N.
+          Generic Pulse-Width Modulation (PWM) support.
+
+          In Pulse-Width Modulation, a variation of the width of pulses
+          in a rectangular pulse signal is used as a means to alter the
+          average power of the signal. Applications include efficient
+          power delivery and voltage regulation. In computer systems,
+          PWMs are commonly used to control fans or the brightness of
+          display backlights.
+
+          This framework provides a generic interface to PWM devices
+          within the Linux kernel. On the driver side it provides an API
+          to register and unregister a PWM chip, an abstraction of a PWM
+          controller, that supports one or more PWM devices. Client
+          drivers can request PWM devices and use the generic framework
+          to configure as well as enable and disable them.
+
+          This generic framework replaces the legacy PWM framework which
+          allows only a single driver implementing the required API. Not
+          all legacy implementations have been ported to the framework
+          yet. The framework provides an API that is backward compatible
+          with the legacy framework so that existing client drivers
+          continue to work as expected.
+
+          If unsure, say no.
 
 if PWM