case USB_DR_MODE_PERIPHERAL://外围模式,也就是当从设备dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE);if(dwc->usb2_phy)otg_set_vbus(dwc->usb2_phy->otg,false);phy_set_mode(dwc->usb2_generic_phy, PHY_MODE_USB_DEVICE);phy_set_mode(dwc->usb3_generic_phy, PHY_MODE_USB_DEVICE); ...
对于16位UTMI模式:从rx_active无效到CRC计算的一个PHY时钟周期 对于8位UTMI模式:从rx_active无效到CRC计算的三个PHY时钟周期 从RXACTIVE无效到txrx_state之间的时间为CHK_CRC16 M5-M4:接收数据包状态推送的三个PHY时钟周期,DATA_TO_STS状态下txrx_state信号所用的时间. M6-M5:寄存器更新触发脉冲同步延迟+寄存器更...
"over-current change\n"); clear_hub_feature(hdev, C_HUB_OVER_CURRENT); msleep(500); /* Cool down */ hub_power_on(hub, true); hub_hub_status(hub, &status, &unused); if (status & HUB_STATUS_OVERCURRENT) dev
/sys/class/bluetooth/hci0|-- device -> ../../../2-1.1:1.0|--power| |--async| |--autosuspend_delay_ms| |--control| |--runtime_active_kids| |--runtime_active_time| |--runtime_enabled| |--runtime_status| |--runtime_suspended_time| `--runtime_usage|--rfkill2| |-- devic...
The USB 2.0 PHY is a Hi-Speed USB peripheral transceiver IP that implements the Intel® UTMI standard. It provides a High/Full/Low-Speed USB analog front-end with a build-in 8-bit/16-bit parallel interface. It is optimized for portable applications with low power dissipation while active...
仅和usb 控制器 、phy 及外接设备有关 相关文档可以参考Documents/driver-api/usb/power-management.rst 3. runtime suspend/resume 系统文件 sysfs文件系统中有关于runtime suspend/resume 控制的一些文件, 位置如下: /sys/bus/usb/devices/.../power/'' 其中, ...为设备id ...
PowerOnLevel(上电功率等级):DALI电源上电时的开启亮度值，（注：如果设置为 255，则上电时亮度为上一次掉电前的亮度）。SystemFailureLevel(系统故障功率等级):当DALI电源中检测到总线故障时,开启的亮度值（注：如果设置为 255，则不作变化）。MinLevel(最小功率等级):DALI电源可以调节到最小的亮度值。MaxLevel...
A USB controller handles all the communication via a USB stack running on a microcontroller (MCU), while a PHY provides the physical interface to the cable. Some hubs and MCUs integrate all components required for a USB system into a single IC. Ready to Get Started with Adding USB to Your...
usb_otg的代码一般在usb的phy端实现,位于drivers/usb/phy或drivers/usb/musb。 USB请求块(URB) USB 请求块(USB request block,urb)是USB设备驱动中用来描述与USB设备通信所用的基本载体和核心数据结构,非常类似于网络设备驱动中的sk_buff结构体,是USB主机与设备通信的“电波”。
When operating as a non-OTG device (that is, not as a dual-role device), the USB 2.0 nanoPHY OTG block's inputs and outputs are ignored. Powering down the OTG block is optional; however, not doing so results in additional power consumption, because the OTG block remains powered up. ...