watchdog: orion: Handle the interrupt so it's properly acked

DT-enabled plaforms, where the irqchip driver for the brigde interrupt
controller is available, can handle the watchdog IRQ properly. Therefore,
request the interrupt and add a dummy handler that merely calls panic().

This is done in order to have an initial 'ack' of the interruption,
which clears the watchdog state.

Furthermore, since some platforms don't have such IRQ, this commit
makes the interrupt specification optional.

Tested-by: Sebastian Hesselbarth <[email protected]>
Tested-by: Willy Tarreau <[email protected]>
Signed-off-by: Ezequiel Garcia <[email protected]>
Acked-by: Wim Van Sebroeck <[email protected]>
Tested-By: Jason Gunthorpe <[email protected]>
Signed-off-by: Jason Cooper <[email protected]>

0 files changed, 0 insertions, 0 deletions