麻烦仔细阅读文档！！
要在fenix根目录下之执行这些命令。
好的，我先耐心阅读下文档，新手，非常感谢您耐心的指导
再请教您个问题，我想在开发板连接PC后，在PC上生成一个usb节点。
面前我已经配置了usb_f_uvc模块，并且在/sys/kernel/config//usb_gadget/目录下已经生成了一个usb设备节点，但是插到PC上没有识别出USB设备。
请问下linux开发板 配置成usb从设备，这个该如何配置呢？
@numbqq 请问下编译前，在选择uboot类型时，uboot-2015.01和uboot-mainline有什么区别。
另外uboot和kernel要同一个版本才能跑起来吗？ 比如uboot-2015.01和linux-4.9要搭配，uboot-mainline和linux-mainline要搭配使用。
带有mainline的是主线版本，有很多功能不完善。
是的，建议uboot-2015.01+linux-4.9，uboot-mainline+linux-mainline
我这边更新了个mainline的内核之后，重启板子，电脑会把VIM3识别成一个usb设备（如下图），然后HDMI一直停留在开机logo，似乎没法开机一样，请问是什么原因？
把问题描述清楚。之前什么固件？怎么更新的？是T卡的还是eMMC的？看现象是uboot加载
我是先刷了官网git上的固件：VIM3_Ubuntu-gnome-focal_Linux-4.9_arm64_EMMC_V0.9-20200530.img
然后环境配置选择如下：
接着编译内核，更新内核后，出现如上的问题
固件是4.9的内核，你更新也要更新4.9的，不要换成主线的！主线和4.9是不同的。
明白，有个疑惑的点，用了主线的内核，开发板似乎成了usb device 模式，可被PC识别到，具体原因是?
上面已经回复你了。升级了主线内核后，之前的uboot启动内核失败，uboot启动内核失败后会进入升级模式。这点你可以去看下uboot源码。
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请问下如何利用fenix脚本编译用户应用程序，拷贝到板子上运行？
应用程序无所谓吧，你只要在pc上用aarch64-linux-gnu-gcc交叉编译就行，如果依赖其他库，自己处理好就行。
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这边自动更新git仓库代码后，编译出现如下错误：
Info: Try to update linux:khadas-vims-4.9.y
From GitHub - khadas/linux: Linux kernel for Khadas VIMs & Edges
- branch khadas-vims-4.9.y → FETCH_HEAD
Updating 2d9633461edd…86f9ab4cb492
error: Your local changes to the following files would be overwritten by merge:
Documentation/ABI/testing/sysfs-bus-iio
Documentation/DocBook/libata.tmpl
Documentation/devicetree/bindings/sound/wm8994.txt
Documentation/filesystems/affs.txt
Documentation/networking/ip-sysctl.txt
Makefile
arch/alpha/include/asm/io.h
arch/arc/plat-eznps/include/plat/ctop.h
arch/arm/boot/dts/socfpga_arria10.dtsi
arch/arm/include/asm/percpu.h
arch/arm/kernel/hw_breakpoint.c
arch/arm/kernel/stacktrace.c
arch/arm/kvm/mmu.c
arch/arm/mach-at91/pm.c
arch/arm/mach-socfpga/pm.c
arch/arm/mm/cache-l2x0.c
arch/arm64/boot/dts/exynos/exynos7-espresso.dts
arch/arm64/boot/dts/qcom/msm8916-pins.dtsi
arch/arm64/boot/dts/qcom/msm8916.dtsi
arch/arm64/boot/dts/xilinx/zynqmp.dtsi
arch/arm64/configs/kvims_defconfig
arch/arm64/include/asm/checksum.h
arch/arm64/include/asm/kvm_arm.h
arch/arm64/include/asm/kvm_asm.h
arch/arm64/kernel/vmlinux.lds.S
arch/arm64/kvm/hyp/entry.S
arch/arm64/kvm/hyp/hyp-entry.S
arch/arm64/kvm/hyp/switch.c
arch/m68k/include/asm/m53xxacr.h
arch/m68k/mac/iop.c
arch/m68k/q40/config.c
arch/mips/Kconfig
arch/mips/include/asm/cpu-type.h
arch/mips/include/uapi/asm/Kbuild
arch/mips/kernel/smp-bmips.c
arch/mips/kernel/topology.c
arch/mips/mm/c-r4k.c
arch/mips/sni/a20r.c
arch/mips/vdso/genvdso.c
arch/parisc/include/asm/cmpxchg.h
arch/parisc/lib/bitops.c
arch/powerpc/configs/pasemi_defconfig
arch/powerpc/configs/ppc6xx_defconfig
arch/powerpc/include/asm/percpu.h
arch/powerpc/include/asm/reg.h
arch/powerpc/include/uapi/asm/Kbuild
arch/powerpc/kernel/dma-iommu.c
arch/powerpc/kernel/tau_6xx.c
arch/powerpc/kernel/vdso.c
arch/powerpc/mm/fault.c
arch/powerpc/perf/core-book3s.c
arch/powerpc/perf/hv-gpci-requests.h
arch/powerpc/perf/isa207-common.c
arch/powerpc/platforms/Kconfig
arch/powerpc/platforms/cell/Kconfig
arch/powerpc/platforms/powernv/opal-dump.c
arch/powerpc/platforms/pseries/hotplug-memory.c
arch/powerpc/platforms/pseries/ras.c
arch/powerpc/platforms/pseries/rng.c
arch/powerpc/sysdev/xics/icp-hv.c
arch/s390/include/asm/percpu.h
arch/s390/kernel/setup.c
arch/sh/boards/mach-landisk/setup.c
arch/sh/kernel/entry-common.S
arch/x86/configs/i386_defconfig
arch/x86/configs/x86_64_defconfig
arch/x86/include/asm/archrandom.h
arch/x86/include/asm/bitops.h
arch/x86/include/asm/nospec-branch.h
arch/x86/include/asm/percpu.h
arch/x86/include/asm/pkeys.h
arch/x86/kernel/fpu/xstate.c
arch/x86/kernel/i8259.c
arch/x86/kernel/vmlinux.lds.S
arch/x86/kvm/emulate.c
arch/x86/kvm/lapic.c
arch/x86/kvm/mmu.c
arch/x86/kvm/mmutrace.h
arch/x86/kvm/vmx.c
arch/x86/kvm/x86.c
arch/xtensa/kernel/perf_event.c
arch/xtensa/platforms/iss/simdisk.c
crypto/algif_aead.c
drivers/acpi/acpica/exprep.c
drivers/acpi/acpica/utdelete.c
drivers/acpi/ec.c
drivers/amlogic/wifi/dhd_static_buf.c
drivers/android/binder.c
drivers/ata/acard-ahci.c
drivers/ata/libahci.c
drivers/ata/libata-core.c
drivers/ata/libata-scsi.c
drivers/ata/libata-sff.c
drivers/ata/pata_macio.c
drivers/ata/pata_pxa.c
drivers/ata/pdc_adma.c
drivers/ata/sata_fsl.c
drivers/ata/sata_inic162x.c
drivers/ata/sata_mv.c
drivers/ata/sata_nv.c
drivers/ata/sata_promise.c
drivers/ata/sata_qstor.c
drivers/ata/sata_rcar.c
drivers/ata/sata_sil.c
drivers/ata/sata_sil24.c
drivers/ata/sata_sx4.c
drivers/atm/atmtcp.c
drivers/atm/eni.c
drivers/atm/firestream.c
drivers/base/core.c
drivers/base/dd.c
drivers/base/power/main.c
drivers/block/brd.c
drivers/block/rbd.c
drivers/block/zram/zram_drv.h
drivers/char/agp/intel-gtt.c
drivers/char/random.c
drivers/char/tlclk.c
drivers/char/tpm/tpm_ibmvtpm.c
drivers/char/tpm/tpm_ibmvtpm.h
drivers/clk/at91/clk-main.c
drivers/clk/bcm/clk-bcm2835.c
drivers/clk/rockchip/clk-rk3228.c
drivers/clk/samsung/clk-exynos4.c
drivers/clk/sirf/clk-atlas6.c
drivers/clk/ti/adpll.c
drivers/clocksource/h8300_timer8.c
drivers/cpufreq/powernv-cpufreq.c
drivers/crypto/ccp/ccp-dev.h
drivers/crypto/ccp/ccp-ops.c
drivers/crypto/ixp4xx_crypto.c
drivers/crypto/omap-sham.c
drivers/crypto/qat/qat_common/qat_algs
Aborting
make: *** [Makefile:25: kernel] Error 1
你自己有修改过代码吧？有些冲突，git status看看，自己解决下冲突。
已经还原了仓库代码 ，但还是编译上诉错误
git status：
On branch master
Your branch is up to date with ‘origin/master’.nothing to commit, working tree clean
对的，是linux目录里面的修改，现在可以编译了，谢谢~！！
