RSB-4220 User Manual
46
3.8
Linux System Configuration and Use
3.8.1
Display Output Setting
3.8.1.1
LVDS Settings
Please set environment in u-boot as below:
setenv mmcargs "run bootargs_defaults;setenv console=${console}
bootargs ${bootargs} root=${mmcroot} rootfstype=${mmcrootfstype}
ip=${ip_method} lvds_panel=TFC_S9700RTWV35TR_01B"
LDB-XGA is an example for the resolution of your LVDS panel. You can input the
actual resolution of your LVDS panel here, such as 800x480, 1024x768, etc. The sys-
tem will accomplish the corresponding parameters automatically.
If the panel has problem to be activated, you may need to check the panel datasheet
to configure the panel related parameters. The LVDS video mode database is stored
in linux-3.2.0/drivers/video/da8xx-fb.c. You can add a new one for your LVDS panel.
static struct da8xx_panel known_lcd_panels[] = {
{
.name = "TFC_S9700RTWV35TR_01B",
.width = 800,
.height = 480,
.hfp = 127,
.hbp = 127,
.hsw = 2,
.vfp = 22,
.vbp = 22,
.vsw = 1,
.pxl_clk = 20000000,
.invert_pxl_clk = 0,
},
}
