<![CDATA[T5 lvds 双屏同显问题]]>使用的是T507芯片，利用PD0-PD9作为第一路LVDS输出，PD10-PD19作为lvds的第二路输出。

上电之后显示绿屏

设备树配置如下

disp: disp@01000000 {
			disp_init_enable         = <1>;
			disp_mode                = <0>;

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

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

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

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

			def_output_dev           = <0>;
			hdmi_mode_check          = <1>;

			fb0_format               = <0>;
			fb0_width                = <1024>;
			fb0_height               = <600>;
			fb0_buffer_num		 = <3>;

			fb1_format               = <0>;
			fb1_width                = <1024>;
			fb1_height               = <600>;
			chn_cfg_mode             = <1>;

			disp_para_zone           = <1>;
			/* VCC-LCD */
			dc1sw-supply = <&reg_sw>;
			/* VCC-LVDS and VCC-HDMI */
			bldo1-supply = <&reg_bldo1>;
			/* VCC-TV */
			cldo4-supply = <&reg_cldo4>;
		};


lcd0: lcd0@01c0c000 {
			lcd_used            = <1>;

			lcd_driver_name     = "default_lcd";
			lcd_backlight       = <50>;
			lcd_if              = <3>;

			lcd_x               = <1024>;
			lcd_y               = <600>;
			lcd_width           = <154>;
			lcd_height          = <86>;
			lcd_dclk_freq       = <51>;

			lcd_pwm_used        = <0>;
			lcd_pwm_ch          = <0>;
			lcd_pwm_freq        = <50000>;
			lcd_pwm_pol         = <1>;
			lcd_pwm_max_limit   = <255>;

			lcd_hbp             = <20>;
			lcd_ht              = <1344>;
			lcd_hspw            = <10>;
			lcd_vbp             = <10>;
			lcd_vt              = <635>;
			lcd_vspw            = <5>;

			lcd_lvds_if         = <0>;
			lcd_lvds_colordepth = <0>;
			lcd_lvds_mode       = <0>;
			lcd_frm             = <0>;
			lcd_hv_clk_phase    = <0>;
			lcd_hv_sync_polarity= <0>;
			lcd_gamma_en        = <1>;
			lcd_bright_curve_en = <0>;
			lcd_cmap_en         = <0>;
			lcd_fsync_en        = <0>;
			lcd_fsync_act_time  = <1000>;
			lcd_fsync_dis_time  = <1000>;
			lcd_fsync_pol       = <0>;

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

			lcd_pin_power = "bldo1";

			lcd_power = "dc1sw";
			lcd_bl_en        	= <&pio PE 3 1 2 3 1>;
			pinctrl-0 = <&lvds0_pins_a>;
			pinctrl-1 = <&lvds0_pins_b>;
		};

lcd0 与 lcd1配置除了后面的pin都一样

是需要更改disp驱动的内容吗

]]>https://bbs.aw-ol.com/topic/3141/t5-lvds-双屏同显问题RSS for NodeMon, 11 May 2026 05:47:36 GMTMon, 20 Mar 2023 08:20:02 GMT60<![CDATA[Reply to T5 lvds 双屏同显问题 on Tue, 21 Mar 2023 10:02:12 GMT]]>@whycan
谢谢晕哥！lvds能显示了

我还想问下如果我想要lvds输出标准74.25MHz的720P30该怎么配置呢

]]>https://bbs.aw-ol.com/post/14406https://bbs.aw-ol.com/post/14406Tue, 21 Mar 2023 10:02:12 GMT<![CDATA[Reply to T5 lvds 双屏同显问题 on Tue, 21 Mar 2023 00:59:13 GMT]]>@flork
同显只要给 lcd0 参数即可。

]]>https://bbs.aw-ol.com/post/14390https://bbs.aw-ol.com/post/14390Tue, 21 Mar 2023 00:59:13 GMT<![CDATA[Reply to T5 lvds 双屏同显问题 on Mon, 20 Mar 2023 12:10:06 GMT]]>[root@/]$ cat /sys/class/disp/disp/attr/sys screen 0: de_rate 696000000 hz, ref_fps:60 mgr0: 1024x600 fmt[rgb] cs[0x204] range[full] eotf[0x4] bits[8bits] err[0] force_sync[0] unblank direct_show[false] dmabuf: cache[0] cache max[0] umap skip[0] overflow[0] lcd output backlight( 50) fps:60.8 1024x 600 err:0 skip:3 irq:17286 vsync:17286 vsync_skip:0 BUF enable ch[0] lyr[0] z[5] prem[N] a[pixel 0] fmt[ 0] fb[1024, 600;1024, 600;1024, 600] crop[ 0, 0,1024, 600] frame[ 0, 0,1024, 600] addr[ff800000, 0, 0] flags[0x 0] trd[0,0] depth[ 0] transf[0] BUF enable ch[1] lyr[0] z[3] prem[N] a[pixel 0] fmt[ 0] fb[1024, 600;1024, 600;1024, 600] crop[ 0, 0,1024, 600] frame[ 0, 0,1024, 600] addr[ff000000, 0, 0] flags[0x 0] trd[0,0] depth[ 0] transf[0] BUF enable ch[2] lyr[0] z[1] prem[N] a[pixel 0] fmt[ 0] fb[1024, 600;1024, 600;1024, 600] crop[ 0, 0,1024, 600] frame[ 0, 0,1024, 600] addr[fe800000, 0, 0] flags[0x 0] trd[0,0] depth[ 0] transf[0] ]]>https://bbs.aw-ol.com/post/14385https://bbs.aw-ol.com/post/14385Mon, 20 Mar 2023 12:10:06 GMT<![CDATA[Reply to T5 lvds 双屏同显问题 on Mon, 20 Mar 2023 09:28:29 GMT]]>demsg中DISP部分信息如下

[    0.420596] Bluetooth: SCO socket layer initialized
[    0.421454] [DISP]disp_module_init
[    0.495499] enable lcd_gamma_table success!
[    0.495880] enable lcd_gamma_table success!
[    0.497696] [DISP] config_fb_by_screen,line:2636:
[    0.497709] config_fb_by_screen fb[0] res[1024x600],size in mm[1024x600]
[    0.501168] [DISP] bind_fb_to_screen,line:2664:
[    0.501180] fb-->scr 0->0,fb_mode=0,addr=0xff800000
[    0.501190] [DISP] config_fb_create_info_by_screen,line:2594:
[    0.501198] config_fb_create_info_by_screen buf:3,fb_mode:0,[1024x600],output[1024x600]
[    0.501217] [DISP] Fb_copy_boot_fb,line:2049:
[    0.501222] no boot_fb0
[    0.501231] [DISP] bind_fb_to_screen,line:2792:
[    0.501241] bind_fb_to_screen fb[0],size[1024x600],crop(0:0)[4398046511104x2576980377600],screen[1024x600]
[    0.501955] [DISP] config_fb_by_screen,line:2636:
[    0.501963] config_fb_by_screen fb[1] res[1024x600],size in mm[1024x600]
[    0.505393] [DISP] bind_fb_to_screen,line:2664:
[    0.505402] fb-->scr 1->0,fb_mode=0,addr=0xff000000
[    0.505410] [DISP] config_fb_create_info_by_screen,line:2594:
[    0.505419] config_fb_create_info_by_screen buf:3,fb_mode:0,[1024x600],output[1024x600]
[    0.505428] [DISP] bind_fb_to_screen,line:2792:
[    0.505438] bind_fb_to_screen fb[1],size[1024x600],crop(0:0)[4398046511104x2576980377600],screen[1024x600]
[    0.506125] [DISP] config_fb_by_screen,line:2636:
[    0.506134] config_fb_by_screen fb[2] res[1024x600],size in mm[1024x600]
[    0.509542] [DISP] bind_fb_to_screen,line:2664:
[    0.509552] fb-->scr 2->0,fb_mode=0,addr=0xfe800000
[    0.509560] [DISP] config_fb_create_info_by_screen,line:2594:
[    0.509567] config_fb_create_info_by_screen buf:3,fb_mode:0,[1024x600],output[1024x600]
[    0.509576] [DISP] bind_fb_to_screen,line:2792:
[    0.509585] bind_fb_to_screen fb[2],size[1024x600],crop(0:0)[4398046511104x2576980377600],screen[1024x600]
[    0.511361] [DISP] disp_lcd_is_interlace,line:874:
[    0.511370] disp_lcd_is_interlace lcd_interlace=0
[    0.511711] [DISP] lcd_clk_config,line:722:
[    0.511724] disp 0, clk: pll(357000000),clk(357000000),dclk(51000000) dsi_rate(357000000)
[    0.511724]      clk real:pll(360000000),clk(360000000),dclk(51428571) dsi_rate(0)
[    0.511745] [DISP] disp_sys_pwm_set_polarity,line:637:
[    0.511751] disp_sys_pwm_Set_Polarity, handle is NULL!
[    0.512551] [DISP]disp_module_init finish

目前是第一路都直接显示绿屏，第二路还没有测试，想先把lvds0调通

]]>https://bbs.aw-ol.com/post/14383https://bbs.aw-ol.com/post/14383Mon, 20 Mar 2023 09:28:29 GMT