Enable KPP on i.MX7D

Document created by JayTu Employee on Aug 16, 2017Last modified by JayTu Employee on Aug 16, 2017
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HW: i.MX7 SabreSD

SW: Android N7.1.1_1.0.0


There is KPP module on i.MX7, but NXP reference board didn't have it. We reworked a "keypad" and has the demo.


For testing, launch an app in Android that can accept text input. KPP also supports multiple input, the "A" is showed by pressing "shift" + "a".


As a side note,

1. The input device driver is drivers/input/keyboard/imx_keypad.c

2. The input event driver is drivers/tty/vt/keyboard.c

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