FIFO Overflow error on low resolution

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FIFO Overflow error on low resolution

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vimalan_93
Contributor I
Hi,
 
We are integrating a raw camera sensor with iMX8M-MINI. Currently the sensor outputs 8-bit RAW format and we are able to successfully grab these frames from the iMX8M-MINI for the kernel version v4.14.78. But, when we try to take any customized resolution with width less than 200 and height less than 64, we are getting FIFO overflow errors in the dmesg as shown below,
 
mxc_mipi-csi.0: FIFO Overflow Error: 208281
mxc_mipi-csi.0: status: 00000010
mxc_mipi-csi.0: FIFO Overflow Error: 208282
mxc_mipi-csi.0: status: 00000010
mxc_mipi-csi.0: FIFO Overflow Error: 208283
mxc_mipi-csi.0: status: 00000010
mxc_mipi-csi.0: FIFO Overflow Error: 208284 
 
and below error is keep on coming in the UART,
 
systemd-journald: /dev/kmsg buffer overrun, some messages lost.
systemd-journald: /dev/kmsg buffer overrun, some messages lost.
systemd-journald: /dev/kmsg buffer overrun, some messages lost. 
 
Is there any platform limitation for imx8m-mini? What does FIFO overflow mean? Any support from NXP's side will be really helpful.
 
Thanks and Regards,
Vimal.
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igorpadykov
NXP TechSupport
NXP TechSupport

Hi Vimal

 

one can try solution provided on

https://community.nxp.com/t5/i-MX-Processors/RX-fifo-overflow-on-MIPI-CSI2-i-MX8MQ/m-p/1087697?comme...

 

Best regards
igor

 

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