From patchwork Thu Jan 3 10:43:59 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [U-Boot,v2] VIDEO: better document the correct use of CONFIG_FB_ADDR From: Wolfgang Denk X-Patchwork-Id: 209208 Message-Id: <1357209839-1784-1-git-send-email-wd@denx.de> To: u-boot@lists.denx.de Date: Thu, 3 Jan 2013 11:43:59 +0100 Signed-off-by: Wolfgang Denk cc: Anatolij Gustschin --- V2: changed text as suggested by Jeroen Hofstee in <50E55D24.8000809@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.