The Xillybus Forum

I am using xillinux on my microzed board. I have connected a GSM modem to serial port UART1 (identified as PS1 on the Operating system). The issue I am facing is whenever I use the modem at a baud of 115200 or above on this port, the error I get is mmc0: Timeout waiting for hardware interrupt. It hangs here. And then I have to reboot the microzed . However for speeds below 115200. it works well without any hanging issues. Why is this ? How can I resolve this ?

Hello,

This is weird indeed. Sounds like a hardware problem to me, and very unlikely to be related to Xillinux. I suggest seeking help from Xilinx' support or forum.

Regards,
Eli

Check your sdhc's freqency when customize zynq IP, too high or too low will make it not woring