1 files changed, 6 insertions, 2 deletions

diff --git a/Documentation/fb/pxafb.txt b/Documentation/fb/pxafb.txt
index db9b8500b43b..ad94b5ca0095 100644
--- a/Documentation/fb/pxafb.txt
+++ b/Documentation/fb/pxafb.txt
@@ -5,9 +5,13 @@ The driver supports the following options, either via
 options=<OPTIONS> when modular or video=pxafb:<OPTIONS> when built in.
 
 For example:
-        modprobe pxafb options=mode:640x480-8,passive
+        modprobe pxafb options=vmem:2M,mode:640x480-8,passive
 or on the kernel command line
-        video=pxafb:mode:640x480-8,passive
+        video=pxafb:vmem:2M,mode:640x480-8,passive
+
+vmem: VIDEO_MEM_SIZE
+        Amount of video memory to allocate (can be suffixed with K or M
+        for kilobytes or megabytes)
 
 mode:XRESxYRES[-BPP]
         XRES == LCCR1_PPL + 1