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mxc_fb wait vsync timeout

Question asked by yufe on Jun 26, 2019
Latest reply on Jun 27, 2019 by igorpadykov

hello,

 

We are using the i.MX6DP processor on a custom board, project's kernel version is 3.14.52. We found that some boards have a higher probability of “MXCFB_WAIT_FOR_VSYNC: timeout 0” error message, Some information is as follows, See the attachment for details.

 

[ 5.514772] mxc_sdc_fb fb.18: MXCFB_WAIT_FOR_VSYNC: timeout 0
[ 6.514760] mxc_sdc_fb fb.18: MXCFB_WAIT_FOR_VSYNC: timeout 0
[ 7.014770] mxc_sdc_fb fb.18: timeout when waiting for on the fly config irq
[ 7.014775] detected fb_set_par error, error code: -110
[ 7.025603] random: nonblocking pool is initialized
[ 7.217643] ------------[ cut here ]------------
[ 7.217651] Kernel BUG at 802cfeb4 [verbose debug info unavailable]

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