> Message du 15/12/16 16:43 > De : "Ivan Stoyanov" > Hello group, > > I am working on i.mx35 based board and I have found a problem with mx3fb > driver. On boot kernel freeze during mx3fb driver initialization and > reboot after few seconds. I tried to debug with prints and found that > kernel freeze as soon as writing SDC_COM_BG_EN in SDC_COM_CONF register. > > Could you please give me advice how get more debug information? Hi, A few thoughts: - compile the driver as module to make it to userspace before testing, you could then use ftrace and dynamic printk rather than recompilation (or only rebuild the module); - check your platform data (device tree?) for wrong addresses; - faulty hardware? - activate locking debug in your kernel - check for interrupt storm on enabling the channel (last comment in http://lxr.free-electrons.com/source/drivers/video/fbdev/mx3fb.c#L389) Regards, Hubert -- To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs
