The bootloader can leave the GPIO expander in a state which doesn't have
output drivers enabled so GPIOs will properly work for input but output
operations will have no effect.
To avoid disrupting the boot in case the bootloader left direction and
data registers in an inconsistent state (e.g. pulling SoC's reset to 0)
reconfigure everything as input.
Reviewed-by: Sander Vanheule <sander@svanheule.net>
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
this patch copies the following files from 5.4 to 5.10:
- config-5.4 -> config-5.10
- files-5.4/ -> files-5.10/
- patches-5.4/ -> patches-5.10/
Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
[rebase on change in files-5.4]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
