Re: [PATCH v3 0/3] Support wakeup methods of Atmel maXTouch controllers

[Dmitry Torokhov]

Hi Dmitry,

On Mon, Dec 07, 2020 at 12:22:14AM +0300, Dmitry Osipenko wrote:
> Some Atmel maXTouch controllers, like mXT1386 and mXT3432S1 for example,
> have a WAKE line that needs to be asserted in order to wake controller
> from a deep sleep, otherwise it will be unusable. This series implements
> support for the wakeup methods in accordance to the mXT1386 datasheet [1],
> see page 29 (chapter "5.8 WAKE Line").
> 
> The mXT1386 is a widely used controller found on many older Android tablet
> devices. Touchscreen on Acer A500 tablet now works properly after this
> series.

I am trying to understand how your controller is configured on that
system. Could you please enable all debug messages in the driver and
post the logs? I am a bit confused why the controller needs to be woken
up twice in mxt_start() given that according to the spec it is supposed
to stay up for 2 seconds after successful I2C transfer...

Thanks!

-- 
Dmitry