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RSB-4220 User Manual
Chapter 3
S
oftware
Functionality
The definition of da8xx_panel in linux-3.2.0/ drivers/video/da8xx-fb.c:
The name field is optional. If you input this value, it can be used in U-Boot environ-
ment settings.
The refresh field is the screen refresh frame rate, such as 60Hz, 70Hz. The resolution
can be filled in the xres & yres fields.
The pixel clock (pixclock) is equaled to 1012/(Total horizontal line * Total vertical line *
DCLK). For example, the total horizontal line is 1344 DCLK, and total vertical number
is 806 horizontal lines. The DCLK frequency is 60 MHz. Therefore, we can get 1012/
(1344*806*60) = 15385.
The margin values can be seen as front porch & back porch.
The sync_len means pulse width.
The sync value indicates the sync polarity (low or high).
struct da8xx_panel {
const charname[25];/* Full name <vendor>_<model> */
unsigned shortwidth;
unsigned shortheight;
int
hfp;
/* Horizontal front porch */
int
hbp;
/* Horizontal back porch */
int
hsw;
/* Horizontal Sync Pulse Width */
int
vfp;
/* Vertical front porch */
int
vbp;
/* Vertical back porch */
int
vsw;
/* Vertical Sync Pulse Width */
unsigned intpxl_clk;/* Pixel clock */
unsigned charinvert_pxl_clk;/* Invert Pixel clock */
};
3.8.1.2
Display Settings
LVDS (Single) out, please set in u-boot as below:
7’’ panle(TFC_S9700RTWV35TR_01B):
setenv mmcargs "run bootargs_defaults;setenv console=${console}
bootargs ${bootargs} root=${mmcroot} rootfstype=${mmcrootfstype}
ip=${ip_method} lvds_panel=TFC_S9700RTWV35TR_01B"
15’’ panle(INNOLUX_G150XGE_L04):
setenv mmcargs "run bootargs_defaults;setenv console=${console}
bootargs ${bootargs} root=${mmcroot} rootfstype=${mmcrootfstype}
ip=${ip_method} lvds_panel=INNOLUX_G150XGE_L04"
18’’ panle(AUO_G185XW01_V1):
setenv mmcargs "run bootargs_defaults;setenv console=${console}
bootargs ${bootargs} root=${mmcroot} rootfstype=${mmcrootfstype}
ip=${ip_method} lvds_panel=AUO_G185XW01_V1"
