寻求tina的display 官方文档说明，感谢

[chrisvista]

不知到有没有官方的tina的display 官方文档说明【不是LCD】,里面有说明DTS里面【&disp】的参数配置:
disp_init_enable = <1>;
disp_mode = <0>;
screen0_output_type = <1>;
screen0_output_mode = <4>;
看到网上都是参考修改，不知道所以然，或者看源代码dev_disp.c
如果有官方文档，就省事了。

[awwwwa]

disp init configuration

disp_mode             (0:screen0<screen0,fb0>)
screenx_output_type   (0:none; 1:lcd; 2:tv; 3:hdmi;5:vdpo)
screenx_output_mode   (used for hdmi output, 0:480i 1:576i 2:480p 3:576p 4:720p50)
                      (5:720p60 6:1080i50 7:1080i60 8:1080p24 9:1080p50 10:1080p60)
screenx_output_format (for hdmi, 0:RGB 1:yuv444 2:yuv422 3:yuv420)
screenx_output_bits   (for hdmi, 0:8bit 1:10bit 2:12bit 2:16bit)
screenx_output_eotf   (for hdmi, 0:reserve 4:SDR 16:HDR10 18:HLG)
screenx_output_cs     (for hdmi, 0:undefined  257:BT709 260:BT601  263:BT2020)
screenx_output_dvi_hdmi (for hdmi, 0:undefined 1:dvi mode 2:hdmi mode)
screen0_output_range   (for hdmi, 0:default 1:full 2:limited)
screen0_output_scan    (for hdmi, 0:no data 1:overscan 2:underscan)
screen0_output_aspect_ratio  (for hdmi, 8-same as original picture 9-4:3 10-16:9 11-14:9)
fbx format            (4:RGB655 5:RGB565 6:RGB556 7:ARGB1555 8:RGBA5551 9:RGB888 10:ARGB8888 12:ARGB4444)
fbx pixel sequence    (0:ARGB 1:BGRA 2:ABGR 3:RGBA)
fb0_scaler_mode_enable(scaler mode enable, used FE)
fbx_width,fbx_height  (framebuffer horizontal/vertical pixels, fix to output resolution while equal 0)
lcdx_backlight        (lcd init backlight,the range:[0,256],default:197
lcdx_yy               (lcd init screen bright/contrast/saturation/hue, value:0~100, default:50/50/57/50)
lcd0_contrast         (LCD contrast, 0~100)
lcd0_saturation       (LCD saturation, 0~100)
lcd0_hue              (LCD hue, 0~100)
framebuffer software rotation setting:
disp_rotation_used:   (0:disable; 1:enable,you must set fbX_width to lcd_y,
set fbX_height to lcd_x)
degreeX:              (X:screen index; 0:0 degree; 1:90 degree; 3:270 degree)
degreeX_Y:            (X:screen index; Y:layer index 0~15; 0:0 degree; 1:90 degree; 3:270 degree)
devX_output_type : config output type in bootGUI framework in UBOOT-2018.
				   (0:none; 1:lcd; 2:tv; 4:hdmi;)
devX_output_mode : config output resolution(see include/video/sunxi_display2.h) of bootGUI framework in UBOOT-2018
devX_screen_id   : config display index of bootGUI framework in UBOOT-2018
devX_do_hpd      : whether do hpd detectation or not in UBOOT-2018
chn_cfg_mode     : Hardware DE channel allocation config. 0:single display with 6
				   channel, 1:dual display with 4 channel in main display and 2 channel in second
                   display, 2:dual display with 3 channel in main display and 3 channel in second
                   in display.

[chrisvista]

@awwwwa 这个在DTS里面有，感觉官方不公布，只能分析代码了，感觉里面比较MESS，还分DISP2和DISP。

[chrisvista]

@awwwwa 谢谢

[awwwwa]

可以看 《Linux_Display_开发指南.pdf》 不过这个也没有设备树的配置描述，更多是源码描述