请问我通过https://open.allwinnertech.com/申请企业认证的时候，一直提示系统繁忙是怎么回事？

@bedrock 在 请问D1怎么开双显和同显异显？ 中说：

见文档:
固件下载:
https://d1.docs.aw-ol.com/source/3_getimg/

请问有双屏显示的DTS配置方式吗？我要怎么样才能把自己的SDK配成这个样子呢？

@memory 请问这个LVGL怎么搞上去的？有没有玩的教程？

好棒~请问这些工具在Tina里都有带吗？

我先用在线文档介绍的方法切到HDMI输出：

cd /sys/kernel/debug/dispdbg
echo disp0 > name; echo switch1 > command; echo 4 10 0 0 0x4 0x101 0 0 0 8 > param; echo 1 > start;

再cat colorbar，就不绿了，说明不是硬件或者显示器的问题，应该是我配置的问题

echo 1 > /sys/class/disp/disp/attr/colorbar 

@xiaowenge 在 D1哪吒开发板默认输出改成HDMI 中说：

board.dts和uboot-board.dts你都这样改：

tina/device/config/chips/d1/configs/nezha$ git diff .
diff --git a/configs/nezha/linux-5.4/board.dts b/configs/nezha/linux-5.4/board.dts
index bfeed6c..335895e 100755
--- a/configs/nezha/linux-5.4/board.dts
+++ b/configs/nezha/linux-5.4/board.dts
@@ -1128,25 +1128,25 @@ chn_cfg_mode     : Hardware DE channel allocation config. 0:single display with
        disp_init_enable         = <1>;
        disp_mode                = <0>;

-       screen0_output_type      = <1>;
-       screen0_output_mode      = <4>;
-
-       screen1_output_type      = <3>;
-       screen1_output_mode      = <10>;
-
-       screen1_output_format    = <0>;
-       screen1_output_bits      = <0>;
-       screen1_output_eotf      = <4>;
-       screen1_output_cs        = <257>;
-       screen1_output_dvi_hdmi  = <2>;
-       screen1_output_range     = <2>;
-       screen1_output_scan      = <0>;
-       screen1_output_aspect_ratio = <8>;
-
-       dev0_output_type         = <1>;
-       dev0_output_mode         = <4>;
+       screen0_output_type      = <3>;
+       screen0_output_mode      = <10>;
+
+       screen0_output_format    = <0>;
+       screen0_output_bits      = <0>;
+       screen0_output_eotf      = <4>;
+       screen0_output_cs        = <257>;
+       screen0_output_dvi_hdmi  = <2>;
+       screen0_output_range     = <2>;
+       screen0_output_scan      = <0>;
+       screen0_output_aspect_ratio = <8>;
+
+       screen1_output_type      = <1>;
+       screen1_output_mode      = <4>;
+
+       dev0_output_type         = <4>;
+       dev0_output_mode         = <10>;
        dev0_screen_id           = <0>;

哇，确实可以了！感谢大佬！
这么改完开机logo默认就从我插着的HDMI显示器输出了
但是好像还有一点问题，就是我cat colorbar的时候，颜色不太对，有点绿，好像是跟我一开始那个ev0_output_type改成4之后打印的绿色重合了，才有了这个效果：

@tigger 应该不是，但是驱动参数配置可能用的一套，所以我也这样配了，确实输出了HDMI，但是输出还没正确

查看hdmi_sink节点：

root@TinaLinux:/# cat /sys/devices/virtual/hdmi/hdmi/attr/hdmi_sink


Video Mode:  640x480P  720x480P  720x480P  1080I60  480I  480I  1080P60  576P  576P  720P50  1080I50  576I  576I  1080P50  720P60

Only Support YUV420:

Also Support YUV420:

Pixel Format: RGB  YUV444  YUV422

Deep Color:

Basic Audio Support:  YES

Audio Code:  LPCM

HDCP Tpye:

把uboot-board.dts文件下的dev0_output_type改成4之后，默认输出倒是改成HDMI了，就是logo显示不正常，现在是一片绿色：

yida@AwExdroid89:~/workspace/d_tina_d1_open_v1.0/device/config/chips/d1/configs/nezha$ git diff .
diff --git a/configs/nezha/uboot-board.dts b/configs/nezha/uboot-board.dts
index 793dec2..bb5ee2b 100644
--- a/configs/nezha/uboot-board.dts
+++ b/configs/nezha/uboot-board.dts
@@ -229,8 +229,8 @@
        screen1_output_scan      = <0>;
        screen1_output_aspect_ratio = <8>;

-       dev0_output_type         = <1>;
-       dev0_output_mode         = <4>;
+       dev0_output_type         = <4>;
+       dev0_output_mode         = <10>;
        dev0_screen_id           = <0>;
        dev0_do_hpd              = <0>;

DTS中对于显示部分配置的注释介绍