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Add atmel mxt multitouch controller driver which is interfaced over I2C bus.
This controller is used by the Logic Technologies, Capacitive Touch Display
7" Parallel (LT161010-2NHC).
Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
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This is only an issue for later Colibri iMX7S 256MB V1.1C and Colibri
iMX7D 512MB V1.1D modules which are currently still in Toradex internal
validation & verification.
Currently without an SD card inserted the regulator framework actually
powers the LDO2 off however e.g. the BL_ON pin is also on that same
rail!
Fix this by specifying LDO2 to be always on and use the regular 3.3V
supply from the carrier board as the vmmc-supply.
Specify that carrier board 3.3V supply to be always on as well to avoid
the following misleading message during boot:
[ 2.299654] 3.3V: disabling
One remaining issue is that now in suspend LDO2 is still powered and
even adding the following did not help:
regulator-state-mem {
regulator-off-in-suspend;
};
Further investigation pending.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Max Krummenacher <max.krummenacher@toradex.com>
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This reverts commit 82f0f4f012a646a735d6b44de77b7c9d0712c714.
This is only an issue for later Colibri iMX7S 256MB V1.1C and Colibri
iMX7D 512MB V1.1D modules which are currently still in Toradex internal
validation & verification.
As it turns out not using LDO2 anywhere at all in the regular case is a
bad idea leading to the following:
[ 2.317688] LDO2: disabling
Of course display and SD card still worked on the EvalBoard due to back
feeding through some pull-ups however on Viola with just one pull-up
it failed once both display and SD card were active...
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Max Krummenacher <max.krummenacher@toradex.com>
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Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Dominik Sliwa <dominik.sliwa@toradex.com>
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Add support for Aster Carrier Board with Colibri iMX7.
Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
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