Hi, On Wed, May 09, 2018 at 04:25:45PM +0200, Pavel Machek wrote: > On Mon 2018-04-23 13:58:44, Sebastian Reichel wrote: > > The current reset-gpio support triggers an interrupt storm on platforms > > using the maxtouch with level based interrupt. The Motorola Droid 4, > > which I used for some of the tests is not affected, since it uses a edge > > based interrupt. > > > > This change avoids the interrupt storm by enabling the device while its > > interrupt is disabled. Afterwards we wait 100ms. This is important for > > two reasons: The device is unresponsive for some time (~22ms for > > mxt224E) and the CHG (interrupt) line is not working properly for 100ms. > > We don't need to wait for any following interrupts, since the following > > mxt_initialize() checks for bootloader mode anyways. > > > > This fixes a boot issue on GE PPD (watchdog kills device due to > > interrupt storm) and does not cause regression on Motorola Droid 4. > > Out of curiosity, what is "GE PPD"? PPD is a product from GE Healthcare to monitor vital biometric signals: arch/arm/boot/dts/imx53-ppd.dts > > Fixes: f657b00df22e ("Input: atmel_mxt_ts - add support for reset line") > > Signed-off-by: Sebastian Reichel > > Reviewed-by: Pavel Machek Thanks, -- Sebastian