From 44a53b57439dc1f117135b4f8c22d25915096164 Mon Sep 17 00:00:00 2001 From: Wolfgang Denk Date: Thu, 3 Jan 2013 00:43:59 +0000 Subject: [PATCH] VIDEO: better document the correct use of CONFIG_FB_ADDR Signed-off-by: Wolfgang Denk cc: Anatolij Gustschin --- README | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/README b/README index 8707bf2..a336476 100644 --- a/README +++ b/README @@ -2714,10 +2714,13 @@ FIT uImage format: 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). + 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. -- 2.7.4