[U-Boot] [PATCH v2] VIDEO: better document the correct use of CONFIG_FB_ADDR

[Wolfgang Denk]

Signed-off-by: Wolfgang Denk <wd at denx.de>
cc: Anatolij Gustschin <agust at denx.de>
---
V2: changed text as suggested by Jeroen Hofstee
    in <50E55D24.8000809 at myspectrum.nl>

 README | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/README b/README
index 78f40df..f84108e 100644
--- a/README
+++ b/README
@@ -2695,11 +2695,14 @@ FIT uImage format:
 - Frame Buffer Address:
 		CONFIG_FB_ADDR
 
-		Define CONFIG_FB_ADDR if you want to use specific
-		address for frame buffer.
-		Then system will reserve the frame buffer address to
-		defined address instead of lcd_setmem (this function
-		grabs the memory for frame buffer by panel's size).
+		Define CONFIG_FB_ADDR if you want to use specific
+		address for frame buffer.  This is typically the case
+		when using a graphics controller has separate video
+		memory.  U-Boot will then place the frame buffer at
+		the given address instead of dynamically reserving it
+		in system RAM by calling lcd_setmem(), which grabs
+		the memory for the frame buffer depending on the
+		configured panel size.
 
 		Please see board_init_f function.
 
-- 
1.7.11.7