The original code hard-coded card detection to the low when card is
inserted and high when not. This might not be true on every board
because it depends on the slot and wiring used. The second reason is
because it is also possible to detect card with D3 pin pull-up when the
slot does not provide dedicated card detection switch.
This introduces new argument to the sam_hsmci_initialize to allow
invert of card detection pin. It also applies this invert to existing
boards as that was the state up to this point.
This commit adds support for GPIO driver based encoder for SAMv7 boards.
This encoder do not use the microcontroller's dedicated driver but two
GPIO pins with interrupts. The position is calculated based on those
interrupts.
This can be used for boards that do not have pins routed to the dedicated
driver.
Signed-off-by: Michal Lenc <michallenc@seznam.cz>
Move MCUboot bootloader implementation to samv7 common folder. This drop
all duplicated code and unify implementation.
Signed-off-by: Gerson Fernando Budke <nandojve@gmail.com>
