Merge tag 'pci-v4.18-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git...

[linux-2.6-microblaze.git] / Documentation / driver-api / gpio / drivers-on-gpio.rst

diff --git a/Documentation/driver-api/gpio/drivers-on-gpio.rst b/Documentation/driver-api/gpio/drivers-on-gpio.rst
index 7da0c1d..f3a1893 100644 (file)
--- a/Documentation/driver-api/gpio/drivers-on-gpio.rst
+++ b/Documentation/driver-api/gpio/drivers-on-gpio.rst
@@ -85,6 +85,10 @@ hardware descriptions such as device tree or ACPI:
   any other serio bus to the system and makes it possible to connect drivers
   for e.g. keyboards and other PS/2 protocol based devices.
 
+- cec-gpio: drivers/media/platform/cec-gpio/ is used to interact with a CEC
+  Consumer Electronics Control bus using only GPIO. It is used to communicate
+  with devices on the HDMI bus.
+
 Apart from this there are special GPIO drivers in subsystems like MMC/SD to
 read card detect and write protect GPIO lines, and in the TTY serial subsystem
 to emulate MCTRL (modem control) signals CTS/RTS by using two GPIO lines. The