在uboot中,配置usb0和usb1都为host模式,实际测试只有usb1能够正常识别u盘,测量引脚电平发现USB0_DRVVBUS引脚输出低电平,而USB1_DRVVBUS能够正常输出高电平。因USB0_DRVVBUS为低导致无法给U盘设备上电。 usb phy已经配置上电,在uboot中读取usb0 usb1 phy电源配置寄存器如下: => md 0x44e10620 1 44e10620...
输出电压由 Vbus 输入感测、并生成 DRVVBUS 信号来控制开关。 [引用 userid="317495" URL"~/support/processors-group/processors/f/processors-forum/1182827/am3352-about-the-entity-that-turns-off-drvvbus/4455634 #4455634">我与客户谈论了这一点,但这并不合适。 这是因为他们认为他们使用硬件...
drvvbus这个脚和bb相连 应该不是供电 供电应该是直接从快充输出vbus 不会和bb相连 有谁知道的吗？
Is it possible to use the AM335x USB ports in host mode without connecting VBUS or DRVVBUS? From other things I have read on these forums (e.g.http://e2e.ti.com/support/dsp/sitara_arm174_microprocessors/f/791/t/197987.aspx) I suspect not, but I'd appreciate a categorical answer. ...
So to keep stable ABI also read drv-vbus property and configure vBus. Fixes: b3f1852 ("usb: phy: Add platform driver support for ULPI phys") Suggested-by: Michal Simek <michal.simek@amd.com> Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com> State: pending...
Hi all, we make the USB port of AM3352 connect to USB1.1 hub IC(TUSB2046).The USB host work well if we don't plug out USB device.But when we make the usb device plug in/out several times, the USB_DRVVBUS Pin will be low....
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客戶的板子在進linux後插拔u盤發現USB2_DRVVBUS沒有反應 在軟硬體部分有哪些東西可以確認? 目前跑過chkusb.sh沒發現問題 output is as following: chkusb.sh Version 0.2.7 Linux buildroot 4.14.79 #7 SMP PREEMPT Tue Jun 30 17:33:46 CST 2020 armv7l GNU/Linux ...
am335x usb 问题 DRVVBUS 一直是低 Other Parts Discussed in Thread:AM3352,TPS65217,PCM1690 我用的是bbb板子,基于最新sdk,我这边需要使用usb0和usb1为主机模式。然后我也按照ti的usb内核配置做了从新编译,但是DRVVBUS一直输出0。请问一下我是哪儿做错了吗?谢谢各位了。
the USB1_DRVVBUS is controlled from the linux driver (and I don't found any way to instruct the driver to move it). if I unplug and plug again the camera, the system disconnect and found the camera, but there is same dmesg errors: "[2037.444946] 6:3:1: cannot set freq 16000 to...