谁能说说通用系统接口CSI,common system interface架构?

zwang00 2006-12-13 08:34:08

CPU的架构太多了，整整就一个什么什么架构，谁能比较系统地说说架构？

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pqmgumnq9n09za1kqbpp 2006-12-16

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我的板子是技嘉的 GA-6BXD，PCB 版本号 1.6，BIOS 更新到最新。跳线在 100MHz/5.0X，装上 2 只原装 OEM PIII500 CPU，Slot1 接口，开机能够认到 2 个 CPU，显示

INTEL 440BX AGP CHIPSET
VCORE1=2.00V VCORE2=2.00V
INTEL PENTIUM III-MMX CPU 500MHz , 2 Processor(s)
<CPU2 ID=0636><PATCH ID=0035><CPU1 ID=0636><PATCH ID=0035>
Memory Testing... 1048576KB OK.

但是无论安装 WinNT 4.0 Win2000 Pro/Server WinXP 都不能识别 2 个 CPU，任务管理器只有 1 个，任务管理器的图表菜单中也没有每个CPU一个图表的选项。

请教这是怎么回事？

.netframework课件,密码mathruanzl,帮助学习,超好用的

QPI总线如何定义.docx

20160629全志R8点亮ov5640.txt 开发板：杭州若格科技，全志R8（Cortex A8） android4.2.2/linux3.4.39 2016/6/29 14:16 1、配置ov5640在android层配置的分辨率为vga（预览/拍照/录像） R:\wyb\vga_ov5640_ruoge_kerun_r8\android\device\softwinner\nuclear-evb\camera.cfg ;------------------------------------------------------------------------------- ; 用于camera的配置 ; ; 采用格式: ; key = key_value ; 注意: 每个key需要顶格写; ; key_value紧跟着key后面的等号后面, 位于同一行中; ; key_value限制大小为256字节以内; ; ;------------------------------------------------------------------------------- ;------------------------------------------------------------------------------- ; 1 for single camera, 2 for double camera ;------------------------------------------------------------------------------- number_of_camera = 1 ;------------------------------------------------------------------------------- ; CAMERA_FACING_BACK ; gc0308 ;------------------------------------------------------------------------------- camera_id = 0 ;------------------------------------------------------------------------------- ; 1 for CAMERA_FACING_FRONT ; 0 for CAMERA_FACING_BACK ;------------------------------------------------------------------------------- camera_facing = 0 ;------------------------------------------------------------------------------- ; camera orientation (0, 90, 180, 270) ;------------------------------------------------------------------------------- camera_orientation = 0 ;------------------------------------------------------------------------------- ; driver device name ;------------------------------------------------------------------------------- camera_device = /dev/video0 ;------------------------------------------------------------------------------- ; device id ; for two camera devices with one CSI ;------------------------------------------------------------------------------- device_id = 0 used_preview_size = 1 key_support_preview_size = 640x480 key_default_preview_size = 640x480 used_picture_size = 1 key_support_picture_size = 640x480 key_default_picture_size = 640x480 used_flash_mode = 0 key_support_flash_mode = on,off,auto key_default_flash_mode = on used_color_effect=1 key_support_color_effect = none,mono,negative,sepia,aqua key_default_color_effect = none used_frame_rate = 1 key_support_frame_rate = 25 key_default_frame_rate = 25 used_focus_mode = 0 key_support_focus_mode = auto,infinity,macro,fixed key_default_focus_mode = auto used_scene_mode = 0 key_support_scene_mode = auto,auto,portrait,landscape,night,night-portrait,theatre,beach,snow,sunset,steadyphoto,fireworks,sports,party,candlelight,barcode key_default_scene_mode = auto used_white_balance = 1 key_support_white_balance = auto,incandescent,fluorescent,warm-fluorescent,daylight,cloudy-daylight key_default_white_balance = auto used_exposure_compensation = 1 key_max_exposure_compensation = 3 key_min_exposure_compensation = -3 key_step_exposure_compensation = 1 key_default_exposure_compensation = 0 ; only for facing back camera in android2.3, should be set in android4.0 used_zoom = 1 key_zoom_supported = true key_smooth_zoom_supported = false key_zoom_ratios = 100,120,150,200,230,250,300 key_max_zoom = 30 key_default_zoom = 0 2、在init.rc（init.sun5i.rc）中加载ov5640.ko这个驱动模块。 R:\wyb\vga_ov5640_ruoge_kerun_r8\android\device\softwinner\nuclear-evb\init.sun5i.rc #csi module insmod /system/vendor/modules/videobuf-core.ko insmod /system/vendor/modules/videobuf-dma-contig.ko insmod /system/vendor/modules/camera.ko #insmod_modules camera #insmod /system/vendor/modules/gc0308.ko #insmod /system/vendor/modules/ov7670.ko #insmod /system/vendor/modules/ov2640.ko insmod /system/vendor/modules/ov5640.ko insmod /system/vendor/modules/sun5i_csi0.ko 配置ov5640.c的编译选项，默认已经配置好，不用修改： R:\wyb\vga_ov5640_ruoge_kerun_r8\lichee\linux-3.4\drivers\media\video\sun5i_csi\device\ov5640.c R:\wyb\vga_ov5640_ruoge_kerun_r8\lichee\linux-3.4\drivers\media\video\sun5i_csi\Kconfig R:\wyb\vga_ov5640_ruoge_kerun_r8\lichee\linux-3.4\drivers\media\video\sun5i_csi\device\Makefile R:\wyb\vga_ov5640_ruoge_kerun_r8\lichee\linux-3.4\drivers\media\video\sun5i_csi\camera_detector\camera_list.c #define __OV5640__ 3、不通的电脑之间的SVN配置的问题： R:\wyb\vga_ov5640_ruoge_kerun_r8\lichee\linux-3.4\modules\mali\DX910-SW-99002-r3p2-01rel3\driver\src\devicedrv\ump\Kbuild # Get subversion revision number, fall back to 0000 if no svn info is available # SVN_REV := $(shell ((svnversion | grep -qv exported && echo -n 'Revision: ' && svnversion) || git svn info | sed -e 's/$$$$/M/' | grep '^Revision: ' || echo ${MALI_RELEASE_NAME}) 2>/dev/null | sed -e 's/^Revision: //') SVN_REV := 1 R:\wyb\vga_ov5640_ruoge_kerun_r8\lichee\linux-3.4\modules\mali\DX910-SW-99002-r3p2-01rel3\driver\src\devicedrv\ump\Makefile.common # Get subversion revision number, fall back to 0000 if no svn info is available # SVN_REV:=$(shell ((svnversion | grep -qv exported && echo -n 'Revision: ' && svnversion) || git svn info | sed -e 's/$$$$/M/' | grep '^Revision: ' || echo ${MALI_RELEASE_NAME}) 2>/dev/null | sed -e 's/^Revision: //') SVN_REV := 1 4、sys_config.fex中配置加载摄像头ov5640，I2C总线序号，从机地址等等。 R:\wyb\vga_ov5640_ruoge_kerun_r8\lichee\tools\pack\chips\sun5i\configs\r8-evb\sys_config.fex ;-------------------------------------------------------------------------------- ;csi gpio configuration ;csi_if: 0:hv_8bit 1:hv_16bit 2:hv_24bit 3:bt656 1ch 4:bt656 2ch 5:bt656 4ch ;csi_mode: 0:sample one csi to one buffer 1:sample two csi to one buffer ;csi_dev_qty: The quantity of devices linked to csi interface ;csi_vflip: flip in vertical direction 0:disable 1:enable ;csi_hflip: flip in horizontal direction 0:disable 1:enable ;csi_stby_mode: 0:not shut down power at standby 1:shut down power at standby ;csi_iovdd: camera module io power , pmu power supply ;csi_avdd: camera module analog power , pmu power supply ;csi_dvdd: camera module core power , pmu power supply ;pmu_ldo3: fill "axp20_pll" ;pmu_ldo4: fill "axp20_hdmi" ;fill "" when not using any pmu power supply ;csi_flash_pol: the active polority of the flash light IO 0:low active 1:high active ;-------------------------------------------------------------------------------- [csi0_para] csi_used = 1 csi_mode = 0 csi_dev_qty = 1 csi_stby_mode = 1 ;csi_mname = "gc0308" ;csi_mname = "ov2640" csi_mname = "ov5640" ;csi_mname = "ov7670" csi_twi_id = 2 ;csi_twi_addr = 0x30 ;csi_twi_addr = 0x60 csi_twi_addr = 0x78 ;csi_twi_addr = 0x42 csi_if = 0 csi_vflip = 0 csi_hflip = 1 csi_iovdd = "" csi_avdd = "" csi_dvdd = "" csi_flash_pol = 1 ;csi_mname_b = "" ;csi_twi_id_b = 1 ;csi_twi_addr_b = 0x78 ;csi_if_b = 0 ;csi_vflip_b = 1 ;csi_hflip_b = 0 ;csi_iovdd_b = "" ;csi_avdd_b = "" ;csi_dvdd_b = "" ;csi_flash_pol_b = 1 csi_pck = port:PE00<3> csi_ck = port:PE01<3> csi_hsync = port:PE02<3> csi_vsync = port:PE03<3> csi_d0 = port:PE04<3> csi_d1 = port:PE05<3> csi_d2 = port:PE06<3> csi_d3 = port:PE07<3> csi_d4 = port:PE08<3> csi_d5 = port:PE09<3> csi_d6 = port:PE10<3> csi_d7 = port:PE11<3> csi_reset = port:power3<1><0> csi_power_en = csi_stby = port:PB10<1><1> csi_flash = csi_af_en = ;csi_reset_b = ;csi_power_en_b = ;csi_stby_b = ;csi_flash_b = ;csi_af_en_b = ;[csi1_para] ;csi_used = 0 ;csi_mode = 0 ;csi_dev_qty = 1 ;csi_stby_mode = 1 ; ;csi_mname = "" ;csi_twi_id = 1 ;csi_twi_addr = 0xba ;csi_if = 0 ;csi_vflip = 0 ;csi_hflip = 0 ;csi_iovdd = "" ;csi_avdd = "" ;csi_dvdd = "" ;csi_flash_pol = 1 ; ;csi_mname_b = "" ;csi_twi_id_b = 1 ;csi_twi_addr_b = 0x78 ;csi_if_b = 0 ;csi_vflip_b = 1 ;csi_hflip_b = 0 ;csi_iovdd_b = "" ;csi_avdd_b = "" ;csi_dvdd_b = "" ;csi_flash_pol_b = 1 ; ;csi_reset = ;csi_power_en = ;csi_stby = ;csi_flash = ;csi_af_en = ;csi_reset_b = ;csi_power_en_b = ;csi_stby_b = ;csi_flash_b = ;csi_af_en_b =

20161114全志R16配置为前ov5640后UVC的双摄像头 1、 Z:\home\wwt\uvc_r16_project\android\device\softwinner\astar-evb20\configs\camera.cfg 修改： number_of_camera = 1 为： number_of_camera = 2 如果不改这里，兄弟，你在camera这个APP里面是绝对看不到前后摄像头的切换选项的！！！！^_ 修改ov5640的分辨率： used_preview_size = 1 key_support_preview_size = 640x480 key_default_preview_size = 640x480 used_picture_size = 1 key_support_picture_size = 640x480 key_default_picture_size = 640x480 为（根据你驱动里面的摄像头的寄存器配置分辨率而实际修改）： used_preview_size = 1 key_support_preview_size = 2592x1936, 2048x1536, 1600x1200, 1280x960, 1280x960, 1024x768, 1920x1080 ,1280x720, 800x600, 640x480 key_default_preview_size = 640x480 used_picture_size = 1 key_support_picture_size = 2592x1936, 2048x1536, 1600x1200, 1280x960, 1280x960, 1024x768, 1920x1080 ,1280x720, 800x600, 640x480 key_default_picture_size = 640x480 2、 Z:\home\wwt\uvc_r16_project\android\device\softwinner\astar-evb20\astar_evb20.mk #include device/softwinner/polaris-common/prebuild/google/products/gms_minimal.mk 注释掉这里干掉Google Play。可以不改。 3、这里讲UVC配置为模块了，请注意UVC所需要的模块的加载顺序。 Z:\home\wwt\uvc_r16_project\android\device\softwinner\astar-evb20\init.sun8i.rc 默认为： #csi module insmod /system/vendor/modules/videobuf-core.ko insmod /system/vendor/modules/videobuf-dma-contig.ko insmod /system/vendor/modules/cam_detect.ko # insmod /system/vendor/modules/actuator.ko # insmod /system/vendor/modules/ad5820_act.ko insmod /system/vendor/modules/cci.ko insmod /system/vendor/modules/vfe_os.ko insmod /system/vendor/modules/vfe_subdev.ko insmod /system/vendor/modules/gc0307.ko # insmod /system/vendor/modules/ov2035.ko insmod /system/vendor/modules/vfe_v4l2.ko 修改为： #csi module # /dev/video0 ov5640 insmod /system/vendor/modules/videobuf-core.ko insmod /system/vendor/modules/videobuf-dma-contig.ko #insmod /system/vendor/modules/cam_detect.ko insmod /system/vendor/modules/cci.ko insmod /system/vendor/modules/vfe_os.ko insmod /system/vendor/modules/vfe_subdev.ko insmod /system/vendor/modules/ov5640.ko insmod /system/ven

wen_ov5640_r16_20161114_1744后插入UVC可以打开ov5640和USB摄像头.7z 20161114全志R16配置为前ov5640后UVC的双摄像头 1、 Z:\home\wwt\uvc_r16_project\android\device\softwinner\astar-evb20\configs\camera.cfg 修改： number_of_camera = 1 为： number_of_camera = 2 如果不改这里，兄弟，你在camera这个APP里面是绝对看不到前后摄像头的切换选项的！！！！^_ 修改ov5640的分辨率： used_preview_size = 1 key_support_preview_size = 640x480 key_default_preview_size = 640x480 used_picture_size = 1 key_support_picture_size = 640x480 key_default_picture_size = 640x480 为（根据你驱动里面的摄像头的寄存器配置分辨率而实际修改）： used_preview_size = 1 key_support_preview_size = 2592x1936, 2048x1536, 1600x1200, 1280x960, 1280x960, 1024x768, 1920x1080 ,1280x720, 800x600, 640x480 key_default_preview_size = 640x480 used_picture_size = 1 key_support_picture_size = 2592x1936, 2048x1536, 1600x1200, 1280x960, 1280x960, 1024x768, 1920x1080 ,1280x720, 800x600, 640x480 key_default_picture_size = 640x480 2、 Z:\home\wwt\uvc_r16_project\android\device\softwinner\astar-evb20\astar_evb20.mk #include device/softwinner/polaris-common/prebuild/google/products/gms_minimal.mk 注释掉这里干掉Google Play。可以不改。 3、这里讲UVC配置为模块了，请注意UVC所需要的模块的加载顺序。 Z:\home\wwt\uvc_r16_project\android\device\softwinner\astar-evb20\init.sun8i.rc 默认为： #csi module insmod /system/vendor/modules/videobuf-core.ko insmod /system/vendor/modules/videobuf-dma-contig.ko insmod /system/vendor/modules/cam_detect.ko # insmod /system/vendor/modules/actuator.ko # insmod /system/vendor/modules/ad5820_act.ko insmod /system/vendor/modules/cci.ko insmod /system/vendor/modules/vfe_os.ko insmod /system/vendor/modules/vfe_subdev.ko insmod /system/vendor/modules/gc0307.ko # insmod /system/vendor/modules/ov2035.ko insmod /system/vendor/modules/vfe_v4l2.ko 修改为： #csi module # /dev/video0 ov5640 insmod /system/vendor/modules/videobuf-core.ko insmod /system/vendor/modules/videobuf-dma-contig.ko #insmod /system/vendor/modules/cam_detect.ko insmod /system/vendor/modules/cci.ko insmod /system/vendor/modules/vfe_os.ko insmod /system/vendor/modules/vfe_subdev.ko insmod /system/vendor/modules/ov5640.ko insmod /system/vendor/modules/vfe_v4l2.ko # /dev/video1 uvc insmod /system/vendor/modules/videobuf2-core.ko insmod /system/vendor/modules/videobuf2-memops.ko insmod /system/vendor/modules/videobuf2-vmalloc.ko insmod /system/vendor/modules/uvcvideo.ko 4、 Z:\home\wwt\uvc_r16_project\lichee\tools\pack\chips\sun8iw5p1\configs\default\env.cfg 推荐修改： bootdelay=0 为： bootdelay=3 5、不用修改： Z:\home\wwt\uvc_r16_project\lichee\tools\pack\chips\sun8iw5p1\configs\evb-20\sys_config.fex ;-------------------------------------------------------------------------------- ;vip (video input port) configuration ;vip_used: 0:disable 1:enable ;vip_mode: 0:sample one interface to one buffer 1:sample two interface to one buffer ;vip_dev_qty: The quantity of devices linked to capture bus ; ;vip_define_sensor_list: If you want use sensor detect function, please set vip_define_sensor_list = 1, and ; verify that file /system/etc/hawkview/sensor_list_cfg.ini is properly configured! ; ;vip_dev(x)_pos: sensor position, "rear" or "front", if vip_define_sensor_list = 1,vip_dev(x)_pos must be configured! ; ;vip_dev(x)_isp_used 0:not use isp 1:use isp ;vip_dev(x)_fmt: 0:yuv 1:bayer raw rgb ;vip_dev(x)_stby_mode: 0:not shut down power at standby 1:shut down power at standby ;vip_dev(x)_vflip: flip in vertical direction 0:disable 1:enable ;vip_dev(x)_hflip: flip in horizontal direction 0:disable 1:enable ;vip_dev(x)_iovdd: camera module io power handle string, pmu power supply ;vip_dev(x)_iovdd_vol: camera module io power voltage, pmu power supply ;vip_dev(x)_avdd: camera module analog power handle string, pmu power supply ;vip_dev(x)_avdd_vol: camera module analog power voltage, pmu power supply ;vip_dev(x)_dvdd: camera module core power handle string, pmu power supply ;vip_dev(x)_dvdd_vol: camera module core power voltage, pmu power supply ;vip_dev(x)_afvdd: camera module vcm power handle string, pmu power supply ;vip_dev(x)_afvdd_vol: camera module vcm power voltage, pmu power supply ;x indicates the index of the devices which are linked to the same capture bus ;fill voltage in uV, e.g. iovdd = 2.8V, vip_devx_iovdd_vol = 2800000 ;fill handle string as below: ;axp22_eldo3 ;axp22_dldo4 ;axp22_eldo2 ;fill handle string "" when not using any pmu power supply ;-------------------------------------------------------------------------------- [csi0] vip_used = 1 vip_mode = 0 vip_dev_qty = 1 vip_define_sensor_list = 0 vip_csi_pck = port:PE00 vip_csi_mck = port:PE01 vip_csi_hsync = port:PE02 vip_csi_vsync = port:PE03 vip_csi_d0 = port:PE04 vip_csi_d1 = port:PE05 vip_csi_d2 = port:PE06 vip_csi_d3 = port:PE07 vip_csi_d4 = port:PE08 vip_csi_d5 = port:PE09 vip_csi_d6 = port:PE10 vip_csi_d7 = port:PE11 vip_csi_sck = port:PE12 vip_csi_sda = port:PE13 vip_dev0_mname = "ov5640" vip_dev0_pos = "rear" vip_dev0_lane = 1 vip_dev0_twi_id = 2 vip_dev0_twi_addr = 0x78 vip_dev0_isp_used = 0 vip_dev0_fmt = 0 vip_dev0_stby_mode = 1 vip_dev0_vflip = 0 vip_dev0_hflip = 0 vip_dev0_iovdd = "axp22_dldo3" vip_dev0_iovdd_vol = 2800000 vip_dev0_avdd = "" vip_dev0_avdd_vol = 2800000 vip_dev0_dvdd = "" vip_dev0_dvdd_vol = 1800000 vip_dev0_afvdd = "" vip_dev0_afvdd_vol = 2800000 vip_dev0_power_en = vip_dev0_reset = port:PE14 vip_dev0_pwdn = port:PE15 vip_dev0_flash_en = vip_dev0_flash_mode = vip_dev0_af_pwdn = [usbc1] usb_used = 1 usb_drv_vbus_gpio = port:PD12 usb_restrict_gpio = usb_host_init_state = 1 usb_restric_flag = 0 usb_regulator_io = "nocare" usb_regulator_vol = 0 usb_not_suspend = 0 编译内核之后， rootroot@cm-System-Product-Name:/home/wwt/uvc_r16_project/lichee$ ./build.sh config Welcome to mkscript setup progress All available chips: 0. sun8iw5p1 Choice: 0 All available platforms: 0. android 1. dragonboard 2. linux 3. tina Choice: 0 All available kernel: 0. linux-3.4 Choice: 0 All available boards: 0. bell-one 1. evb 2. evb-20 3. evb-rtl8723bs 4. sc3813r Choice: 2 rootroot@cm-System-Product-Name:/home/wwt/uvc_r16_project/lichee$ ./build.sh 配置USB摄像头为模块（也可以选择*直接编译进内核）： rootroot@cm-System-Product-Name:/home/wwt/uvc_r16_project/lichee$ cd linux-3.4/ rootroot@cm-System-Product-Name:/home/wwt/uvc_r16_project/lichee/linux-3.4$ make ARCH=arm menuconfig Device Drivers ---> Multimedia support ---> [*] Video capture adapters ---> 修改： [ ] V4L USB devices ---> 为： [*] V4L USB devices ---> 修改： USB Video Class (UVC) (NEW) 为 USB Video Class (UVC) rootroot@cm-System-Product-Name:/home/wwt/uvc_r16_project/lichee$ cd linux-3.4/ rootroot@cm-System-Product-Name:/home/wwt/uvc_r16_project/lichee/linux-3.4$ cd .. rootroot@cm-System-Product-Name:/home/wwt/uvc_r16_project/lichee$ rootroot@cm-System-Product-Name:/home/wwt/uvc_r16_project/lichee$ ./build.sh rootroot@cm-System-Product-Name:/home/wwt/uvc_r16_project/lichee$ cd ../android/ rootroot@cm-System-Product-Name:/home/wwt/uvc_r16_project/android$ source build/envsetup.sh including device/softwinner/bellone-sc3813r/vendorsetup.sh including device/softwinner/astar-evb20/vendorsetup.sh including device/softwinner/r16-bell-one/vendorsetup.sh including device/softwinner/astar-evb/vendorsetup.sh including device/softwinner/polaris-common/vendorsetup.sh including device/lge/mako/vendorsetup.sh including device/lge/hammerhead/vendorsetup.sh including device/samsung/manta/vendorsetup.sh including device/generic/x86/vendorsetup.sh including device/generic/mips/vendorsetup.sh including device/generic/armv7-a-neon/vendorsetup.sh including device/asus/tilapia/vendorsetup.sh including device/asus/deb/vendorsetup.sh including device/asus/grouper/vendorsetup.sh including device/asus/flo/vendorsetup.sh including sdk/bash_completion/adb.bash rootroot@cm-System-Product-Name:/home/wwt/uvc_r16_project/android$ lunch You're building on Linux Lunch menu... pick a combo: 1. aosp_arm-eng 2. aosp_x86-eng 3. aosp_mips-eng 4. vbox_x86-eng 5. bellone_sc3813r-eng 6. astar_evb20-eng 7. r16_bell_one-eng 8. astar_evb-eng 9. aosp_mako-userdebug 10. aosp_hammerhead-userdebug 11. aosp_manta-userdebug 12. mini_x86-userdebug 13. mini_mips-userdebug 14. mini_armv7a_neon-userdebug 15. aosp_tilapia-userdebug 16. aosp_deb-userdebug 17. aosp_grouper-userdebug 18. aosp_flo-userdebug Which would you like? [aosp_arm-eng] 6 ============================================ PLATFORM_VERSION_CODENAME=REL PLATFORM_VERSION=4.4.2 TARGET_PRODUCT=astar_evb20 TARGET_BUILD_VARIANT=eng TARGET_BUILD_TYPE=release TARGET_BUILD_APPS= TARGET_ARCH=arm TARGET_ARCH_VARIANT=armv7-a-neon TARGET_CPU_VARIANT=cortex-a7 HOST_ARCH=x86 HOST_OS=linux HOST_OS_EXTRA=Linux-3.13.0-24-generic-x86_64-with-Ubuntu-14.04-trusty HOST_BUILD_TYPE=release BUILD_ID=KVT49L OUT_DIR=out ============================================ rootroot@cm-System-Product-Name:/home/wwt/uvc_r16_project/android$ extract-bsp rootroot@cm-System-Product-Name:/home/wwt/uvc_r16_project/android$ make -j12 rootroot@cm-System-Product-Name:/home/wwt/uvc_r16_project/android$ pack 编译好系统之后，刷机之后请注意先让开发板的Android4.4启动完成之后再插入USB摄像头。全志R16的android4.4启动之后再插入USB摄像头。这个配置就可以设置 ov5640为后置摄像头：/dev/video0 UVC为前置摄像头：/dev/video1 如果接上USB摄像头再启动，android是被： ov5640为前置摄像头，有设备节点/dev/video1，打开失败。 UVC为后置摄像头：/dev/video0 原因未知。参考资料： http://blog.csdn.net/u010257920/article/details/49925807 A20 linux(dragonboard)同时使用Parallel CSI Camera及UVC http://blog.csdn.net/guoyihoney/article/details/46966603 A20平台增加camera http://blog.csdn.net/it_fish_man/article/details/17395469 Android usb camera设备添加 http://blog.csdn.net/zmnqazqaz/article/details/49535531 RK3288 uvc摄像头调试 http://blog.csdn.net/edsam49/article/details/8886543 USB Camera在android车机上应用前景及初试小结

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