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SDK：版本号Android10.0
adb工具下载地址： https://developer.android.google.cn/studio/releases/platform-tools?hl=en But if you want just these command-line tools, use the following links: Download SDK Platform-Tools for Windows Download SDK Platform-Tools for Mac Download SDK Platform-Tools for Linux 31.0.2 (April 2021) adb Support forwarding to vsock on linux. Fix bug in adb track-devices where devices over wireless debugging wouldn't immediately receive updates. Implement preliminary support for mDNS device discovery without a separately installed mDNS service. This is currently disabled by default, and can be enabled by setting the environment variable ADB_MDNS_OPENSCREEN to 1 when starting the adb server. fastboot Don't fail when unable to get boot partition size. Derive device locked state from property instead of parsing the kernel command line. 图片 adb shell 图片 console:/ $ console:/ $ [ 3258.571344] type=1400 audit(1619416953.712:120): avc: denied { getattr } for comm="ndroid.settings" path="/sys/devices/platform/ff770000.syscon/ff770000.syscon:u***2-phy@e450/otg_mode" dev="sysfs" ino=14198 scontext=u:r:system_app:s0 tcontext=u:object_r:sysfs:s0 tclass=file permissive=1 [ 3258.571416] type=1400 audit(1619416960.643:121): avc: denied { write } for comm="Thread-2" name="otg_mode" dev="sysfs" ino=14198 scontext=u:r:system_app:s0 tcontext=u:object_r:sysfs:s0 tclass=file permissive=1 [ 3258.581380] xhci-hcd xhci-hcd.5.auto: remove, state 4 [ 3258.581462] u*** u***8: USB disconnect, device number 1 [ 3258.584348] xhci-hcd xhci-hcd.5.auto: USB bus 8 deregistered [ 3258.589484] xhci-hcd xhci-hcd.5.auto: remove, state 4 [ 3258.589538] u*** u***7: USB disconnect, device number 1 [ 3258.591488] xhci-hcd xhci-hcd.5.auto: USB bus 7 deregistered [ 3259.852864] phy phy-ff770000.syscon:u***2-phy@e450.2: charger = USB_SDP_CHARGER [ 3260.169861] android_work: sent uevent USB_STATE=CONNECTED [ 3260.187385] configfs-gadget gadget: high-speed config #1: b [ 3260.187895] android_work: sent uevent USB_STATE=CONFIGURED console:/ $ 图片 adb shell 图片 PC（WIN10）的电脑发现AIO-3399J开发板： 图片 设备已准备就绪： 图片 点击右下角可以：弹出MTP 图片 现象：u***3.0接口用u***线连接电脑无法识别 原因：android10使用kernel4.19和android9使用kernel4.4的dts设置有区别： 1. DWC3 的power-domains属性，resets 属性，extcon 属性 引用位置不同。在Linux-4.4内核，这 三个属性是放在 DWC3 控制器的父节点（u***drd3），而在Linux-4.19内核，这三个属性移到了 DWC3 控制器的子节点（u***drd_dwc3）。 2. 在配置 Type-C to Type-A USB 2.0/3.0 OTG DTS 时，Linux-4.19内核需要在USB 控制器子节点 （u***drd_dwc3）中增加 extcon 属性的配置，才能支持软件切换OTG 模式，而Linux-4.4 内核无 此要求。 修改代码： V:rk3399_q_testkernelarcharm64bootdtsrockchiprk3399-tve-ind3399a.dtsi &u***drd_dwc3_0 {undefined status = "okay"; dr_mode = "otg"; extcon = <&u2phy0>; //加这一句 }; V:rk3399_q_testdevicerockchiprk3399init.rk3399.rc # update cpusets feature nodes for rk3399 tablet write /dev/cpuset/foreground/cpus 0-5 write /dev/cpuset/foreground/boost/cpus 4-5 write /dev/cpuset/background/cpus 0 write /dev/cpuset/system-background/cpus 0-3 write /dev/cpuset/top-app/cpus 0-5 write /sys/devices/system/cpu/cpufreq/policy4/interactive/target_loads "65 1008000:70 1200000:75 1416000:80 1608000:90" write /sys/devices/platform/ff770000.syscon/ff770000.syscon:u***2-phy@e450/otg_mode otg//加这一句 参考：Rockchip_RK3399_Developer_Guide_USB_DTS_CN_V1.3 |
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