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ikwzm / FPGA-SoC-Linux

FPGA+SoC+Linux+Device Tree Overlay+FPGA Manager U-Boot&Linux Kernel&Debian11 Images (for Xilinx:Zynq-Zybo:PYNQ-Z1 Altera:de0-nano-soc:de10-nano)
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USB overcurrent #4

Open burianp opened 7 years ago

burianp commented 7 years ago

Hello,

I have issue with my project based on DE0 SoC Nano. During boot, i got: 1.344394] ttyS0 - failed to request DMA [ 1.353905] mmc_host mmc0: Bus speed (slot 0) = 50000000Hz (slot req 25000000 Hz, actual 25000000HZ div = 1) 68 printk messages dropped [ 1.357089] dwc2 ffb40000.usb: Overcurrent c hange detected 181 printk messages dropped [ 1.365456] dwc2 ffb40000.usb: Overcurrent change detected

Thanks for your advice.

Best regards, Petr.

maku0 commented 8 months ago

I have similar isue with FT232 USB dongle, after few weeks of Linux work I had overcurrent change detect error in dmest, and /dev/ttyUSB0 disapeared from system.