关于linux下pixclock、left_margin、right_margin、hsync_len等的计算

原文：http://www.tuicool.com/articles/NzQVR3

xres <===========> TEP

yres <===========> Tvd

left_margin <===========> Thf

right_margin <===========> Thb

hsync_len <===========> THS

upper_margin <===========> Tvf

lower_margin <===========> Tvb

vsync_len <===========> Tvs

Pixelclock:

xfree: in MHz

fb: in picoseconds (ps)

pixclock = 1000000 / DCF

上面示例LCD对应的fb参数如下：

.pixclock = 1000000/64=15625, 
.xres = 768, 
.yres = 1024, 
.left_margin =0, 
.right_margin = 180, 
.hsync_len =THS= TH-THD-THB=948-768-180=0 , 
.upper_margin = 0, 
.lower_margin = TVB=116, 
.vsync_len = TVS=TV-TVD-TVB=1140-1024-116=0,