教程不错，学习了。
uart debug配置搞了很久。

@hubbell 试过也不行, PD20脚硬件使用4.7k电阻上拉到3.3V，进linux 还是低电平。

#define panel_reset(sel, val) sunxi_lcd_gpio_set_value(sel, 0, val)

code_textstatic void lcd_power_on(u32 sel)
{
	sunxi_lcd_power_enable(sel, 0);
	sunxi_lcd_delay_ms(10);
	sunxi_lcd_power_enable(sel, 1);
	sunxi_lcd_delay_ms(10);
	sunxi_lcd_pin_cfg(sel, 1);
	sunxi_lcd_delay_ms(50);
	panel_reset(sel, 1);
	sunxi_lcd_delay_ms(100);
	panel_reset(sel, 0);
	sunxi_lcd_delay_ms(100);
	panel_reset(sel, 1);
	sunxi_lcd_delay_ms(100);

}

// 1280x800 MIPI LCD
&lcd0 {
	lcd_used            = <1>;

	lcd_driver_name     = "he0801a068";
	lcd_backlight       = <100>;
	lcd_if              = <4>;

	lcd_x               = <800>;
	lcd_y               = <1280>;
	lcd_width           = <52>;
	lcd_height          = <52>;
	lcd_dclk_freq       = <72>;

	lcd_pwm_used        = <1>;
	lcd_pwm_ch          = <7>;
	lcd_pwm_freq        = <50000>;
	lcd_pwm_pol         = <1>;
	lcd_pwm_max_limit   = <255>;

	lcd_hbp             = <40>;
	lcd_ht              = <900>;
	lcd_hspw            = <20>;
	lcd_vbp             = <24>;
	lcd_vt              = <1330>;
	lcd_vspw            = <4>;

	lcd_dsi_lane        = <4>;
	lcd_dsi_if          = <0>;
	lcd_dsi_format      = <0>;
	lcd_dsi_te          = <0>;
	lcd_frm             = <0>;
	lcd_gamma_en        = <0>;
	lcd_cmap_en         = <0>;

	lcd_gpio_0 = <&pio PD 20 GPIO_ACTIVE_HIGH>;	//reset 
	pinctrl-0 = <&dsi4lane_pins_a>;
	pinctrl-1 = <&dsi4lane_pins_b>;
   	//lcd_reset = <&pio PD 20 1 0 3 1>;  //reset
};

能共享一下调MIPI DSI的经验吗？我也是用T113调试，uboot都可以显示logo,到linux kernel就不能显示了，查看了一下，lcd_reset 复位脚位低了，使用lcd_reset =<&pio PD 20 GPIO_ACTIVE_HIGH>, 进入linux后PD20他还是低电平，没有找到为什么？

教程不错，学习了。
uart debug配置搞了很久。

@a937983423 系统是win10 带的ubuntu 18.04 LTS
安装时有些 软件包没有安装成功
sudo apt-get install ncurse //更新使用后面的命令 sudo apt-get install libncurses5-dev

sudo apt-get install libncurses5-dev:i386 //not install
sudo apt-get install libx11-dev:i386 //not install
sudo apt-get install libreadline6-dev:i386 //not install
sudo apt-get install libgl1-mesa-glx:i386 //not install
sudo apt-get install mingw32 //not install
sudo apt-get install zlib1g-dev:i386 //not install

第一次编译T113代码，选择
0 .linux
2.longan
0.linux-5.4
0.t113
2.evb1_auto_nand
0.default
0.gnueabi

./build.sh
编译时出错在
fs/tar/tar.mk:16: recipe for target '/mnt/f/allwinner/t113/out/t113/evb1_auto_nand/longan/buildroot/images/rootfs.tar' failed
make: *** [/mnt/f/allwinner/t113/out/t113/evb1_auto_nand/longan/buildroot/images/rootfs.tar] Error 1
make: Leaving directory '/mnt/f/allwinner/t113/buildroot/buildroot-201902'
ERROR: build buildroot Failed
INFO: mkbr failed
请问各位大神怎样解决这个问题，查看文档找不出问题，卡了。