内核阶段开机logo会出现黑线,黑线位置随机

aiit111 LV 4

屏幕是480x272的lcd电阻屏.
淘宝购买的t113开发板卖家给的sdk开发镜像.
原镜像分辨率是800x480,对照屏幕参数修改了设备树,uboot阶段logo正常,内核会出现黑线.

DOT小文哥 LV 8

看着是boot里的屏幕没配好，查查屏幕配置和驱动

aiit111 LV 4

小文哥,之前上传的视频有问题,uboot和kernel关于lcd的配置都是一样的
屏幕RGB 480x272 linux-5.4.273

线索一 uboot-board.dts

&disp {
	disp_init_enable         = <1>;
	disp_mode                = <0>;

	screen0_output_type      = <1>;
	screen0_output_mode      = <4>;

	screen1_output_type      = <1>;
	screen1_output_mode      = <4>;

	screen1_output_format    = <0>;
	screen1_output_bits      = <0>;
	screen1_output_eotf      = <4>;
	screen1_output_cs        = <257>;
	screen1_output_range     = <2>;
	screen1_output_scan      = <0>;
	screen1_output_aspect_ratio = <8>;

	dev0_output_type         = <1>;
	dev0_output_mode         = <4>;
	dev0_screen_id           = <0>;
	dev0_do_hpd              = <0>;

	dev1_output_type         = <4>;
	dev1_output_mode         = <10>;
	dev1_screen_id           = <1>;
	dev1_do_hpd              = <1>;

	def_output_dev           = <0>;

	fb0_format               = <0>;
	fb0_width                = <480>;
	fb0_height               = <272>;

	fb1_format               = <0>;
	fb1_width                = <0>;
	fb1_height               = <0>;
	chn_cfg_mode             = <1>;

	disp_para_zone           = <1>;
	/*VCC-LCD*/
/*	dc1sw-supply = <&reg_dc1sw>;*/
	/*VCC-DSI*/
/*	eldo3-supply = <&reg_eldo3>;*/
	/*VCC-PD*/
/*	dcdc1-supply = <&reg_dcdc1>;*/
};

&lcd0 {
	lcd_used            = <1>;

	lcd_driver_name     = "default_lcd";
	lcd_if              = <0>;
	lcd_x               = <480>;
	lcd_y               = <272>;
	lcd_width           = <95>;
	lcd_height          = <54>;
	lcd_dclk_freq       = <10>;

	lcd_pwm_used        = <1>;
	lcd_pwm_ch          = <7>;
	lcd_pwm_freq        = <10000>;
	lcd_pwm_pol         = <1>;

	lcd_hbp             = <44>;/*43+1*/
	lcd_ht              = <526>;
	lcd_hspw            = <1>;/*1*/
	lcd_vbp             = <13>;
	lcd_vt              = <286>;
	lcd_vspw            = <1>;

	lcd_lvds_if         = <0>;
	lcd_lvds_colordepth = <1>;
	lcd_lvds_mode       = <0>;
	lcd_frm             = <0>;
	lcd_io_phase        = <0x0000>;
	lcd_gamma_en        = <0>;
	lcd_bright_curve_en = <0>;
	lcd_cmap_en         = <0>;

	deu_mode            = <0>;
	lcdgamma4iep        = <22>;
	smart_color         = <90>;
	pinctrl-0 = <&rgb18_pins_a>;
	pinctrl-1 = <&rgb18_pins_b>;
};

board.dts

&disp {
	disp_init_enable         = <1>;
	disp_mode                = <0>;

	screen0_output_type      = <1>;
	screen0_output_mode      = <4>;

	screen1_output_type      = <1>;/*3*/
	screen1_output_mode      = <4>;
	
	screen1_output_format    = <0>;
	screen1_output_bits      = <0>;
	screen1_output_eotf      = <4>;
	screen1_output_cs        = <257>;
	screen1_output_range     = <2>;
	screen1_output_scan      = <0>;
	screen1_output_aspect_ratio = <8>;
	dev0_output_type         = <1>;
	dev0_output_mode         = <4>;
	dev0_screen_id           = <0>;
	dev0_do_hpd              = <0>;

	dev1_output_type         = <4>;
	dev1_output_mode         = <10>;
	dev1_screen_id           = <1>;
	dev1_do_hpd              = <1>;

	def_output_dev           = <0>;
	disp_rotation_used	 = <1>;
	degree0			 = <0>;
	fb0_format               = <0>;
	fb0_buffer_num           = <1>;	
	fb0_width                = <480>;
	fb0_height               = <272>;
	/*fb0_width                = <800>;*/
	/*fb0_height               = <480>;*/  /*read from lcd*/
	fb1_format               = <0>;
	fb1_width                = <0>;
	fb1_height               = <0>;
	chn_cfg_mode             = <1>;

	disp_para_zone           = <1>;
	/*VCC-LCD*/
/*	dc1sw-supply = <&reg_dc1sw>;*/
	/*VCC-DSI*/
/*	eldo3-supply = <&reg_eldo3>;*/
	/*VCC-PD*/
/*	dcdc1-supply = <&reg_dcdc1>;*/
};

&lcd0 {
	lcd_used            = <1>;

	lcd_driver_name     = "default_lcd";
	lcd_backlight       = <50>;
	lcd_if              = <0>;

	lcd_x               = <480>;
	lcd_y               = <272>;
	lcd_width           = <95>;
	lcd_height          = <54>;
	lcd_dclk_freq       = <10>;

	/*lcd_pwm_used        = <1>;
	lcd_pwm_ch          = <7>;
	lcd_pwm_freq        = <10000>;
	lcd_pwm_pol         = <1>;*/

	lcd_hbp             = <44>;
	lcd_ht              = <526>;
	lcd_hspw            = <1>;
	lcd_vbp             = <13>;
	lcd_vt              = <286>;
	lcd_vspw            = <1>;

	lcd_lvds_if         = <0>;
	lcd_lvds_colordepth = <1>;
	lcd_lvds_mode       = <0>;
	lcd_frm             = <0>;
	lcd_io_phase        = <0x0000>;
	lcd_gamma_en        = <0>;
	lcd_bright_curve_en = <0>;
	lcd_cmap_en         = <0>;

	deu_mode            = <0>;
	lcdgamma4iep        = <22>;
	smart_color         = <90>;

	pinctrl-0 = <&rgb18_pins_a>;
	pinctrl-1 = <&rgb18_pins_b>;
};

线索二内核输出
[ 0.508712] [DISP]disp_module_init
[ 0.512657] disp 5000000.disp: Adding to iommu group 0
[ 0.518295] [DISP] parser_disp_init_para,line:1430:
[ 0.518299] of_property_read fb0_width fail
[ 0.527390] [DISP] disp_init,line:2386:
[ 0.527394] smooth display screen:0 type:1 mode:4
[ 0.552098] display_fb_request,fb_id:0
[ 0.557423] Freeing logo buffer memory: 1500K
[ 0.562297] disp_al_manager_apply ouput_type:1
[ 0.566842] [DISP] lcd_clk_config,line:744:
[ 0.566853] disp 0, clk: pll(60000000),clk(60000000),dclk(10000000) dsi_rate(60000000)
[ 0.566853] clk real:pll(288000000),clk(288000000),dclk(12000000) dsi_rate(0)
[ 0.570471] [DISP]disp_module_init finish
[ 0.571150] sunxi_pwm_enable_dual: can't parse pwm device
[ 0.587556] sunxi_sid_init()551 - insmod ok
[ 0.601112] sun8iw20-pinctrl 2000000.pinctrl: 2000000.pinctrl supply vcc-pb not found, using dummy regulator

所搜了网上许多资料,推测原因是由于内核初始化lcd屏幕fb内存释放引起,的目前有两个方向,更新新的sdk,更新的话,之前对虚拟机中做的配置还需要再来一遍,有没有其他解决方法,

@xiaowenge