Hi Lothar, On Monday 23 September 2013 15:40:18 Lothar Waßmann wrote: > Jürgen Beisert writes: > > The i.MX28 manual says the LRADC delay unit is driven by a 2 kHz clock, > > but does not say what kind of clock it is (or is derived from). I guess > > now, this clock isn't enabled and thus the delay unit can't work. At > > least on the MX28EVK. On your TX28 platform the clock seems enabled and > > the delay unit can do its job and drive the state machine. > > The i.MX28 Ref Manual states in chapter 38.5.14 LRADC Scheduling Delay: > | This counter operates on a 2KHz clock derived from crystal clock. > > Thus the clock should always be enabled. But it isn't always on. I have now added the correct clock_get() call to the LRADC driver and the touchscreen works again on the MX28EVK. New patch series will follow. Same is required for i.MX23. Regards, Juergen -- Pengutronix e.K. | Juergen Beisert | Linux Solutions for Science and Industry | http://www.pengutronix.de/ | _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
