A40i 支持21.5 寸lvds，硬件接口
sys_config.fex 配置
[lcd0] lcd_used = 1 lcd_driver_name = "default_lcd" lcd_bl_0_percent = 0 lcd_bl_40_percent = 23 lcd_bl_100_percent = 100 lcd_backlight = 50 lcd_if = 3 lcd_x = 1920 lcd_y = 1080 lcd_width = 476 lcd_height = 268 lcd_dclk_freq = 75 lcd_pwm_used = 1 lcd_pwm_ch = 0 lcd_pwm_freq = 5000 lcd_pwm_pol = 1 lcd_pwm_max_limit = 255 lcd_hbp = 142 lcd_ht = 2082 lcd_hspw = 2 lcd_vbp = 34 lcd_vt = 1159 lcd_vspw = 2 lcd_lvds_if = 1 lcd_lvds_colordepth = 0 lcd_lvds_mode = 0 lcd_frm = 0 lcd_hv_clk_phase = 0 lcd_hv_sync_polarity= 0 lcd_dsi_if = 0 lcd_dsi_lane = 4 lcd_dsi_format = 0 lcd_dsi_te = 0 lcd_gamma_en = 0 lcd_bright_curve_en = 0 lcd_cmap_en = 0 ;LCD-BL-EN lcd_bl_en = port:PI21<1><0><default><1> ;lcd_bl_en_power = "vcc-3v3" lcd_power = "vcc-lcd" ;LCD-EN lcd_gpio_0 = port:PB03<1><0><default><1> ;LCD-RST lcd_gpio_1 = port:PB04<1><1><default><1> lcd_pin_power = "vcc-pd" lcdd0 = port:PD00<3><0><default><default> lcdd1 = port:PD01<3><0><default><default> lcdd2 = port:PD02<3><0><default><default> lcdd3 = port:PD03<3><0><default><default> lcdd4 = port:PD04<3><0><default><default> lcdd5 = port:PD05<3><0><default><default> lcdd6 = port:PD06<3><0><default><default> lcdd7 = port:PD07<3><0><default><default> lcdd8 = port:PD08<3><0><default><default> lcdd9 = port:PD09<3><0><default><default> lcdd10 = port:PD10<3><0><default><default> lcdd11 = port:PD11<3><0><default><default> lcdd12 = port:PD12<3><0><default><default> lcdd13 = port:PD13<3><0><default><default> lcdd14 = port:PD14<3><0><default><default> lcdd15 = port:PD15<3><0><default><default> lcdd16 = port:PD16<3><0><default><default> lcdd17 = port:PD17<3><0><default><default> lcdd18 = port:PD18<3><0><default><default> lcdd19 = port:PD19<3><0><default><default> [lcd0_suspend] lcdd0 = port:PD00<7><0><default><default> lcdd1 = port:PD01<7><0><default><default> lcdd2 = port:PD02<7><0><default><default> lcdd3 = port:PD03<7><0><default><default> lcdd4 = port:PD04<7><0><default><default> lcdd5 = port:PD05<7><0><default><default> lcdd6 = port:PD06<7><0><default><default> lcdd7 = port:PD07<7><0><default><default> lcdd8 = port:PD08<7><0><default><default> lcdd9 = port:PD09<7><0><default><default> lcdd10 = port:PD10<7><0><default><default> lcdd11 = port:PD11<7><0><default><default> lcdd12 = port:PD12<7><0><default><default> lcdd13 = port:PD13<7><0><default><default> lcdd14 = port:PD14<7><0><default><default> lcdd15 = port:PD15<7><0><default><default> lcdd16 = port:PD16<7><0><default><default> lcdd17 = port:PD17<7><0><default><default> lcdd18 = port:PD18<7><0><default><default> lcdd19 = port:PD19<7><0><default><default>