Messages can be exchanged between userspace software and firmware
via set of two dedicated registers, namely scratch1 and scratch0.
scratch1 acts as a command register i.e message is sent to firmware,
while scratch0 holds response to previously sent message.
Signed-off-by: Tomasz Duszynski <tduszynski@marvell.com>
Signed-off-by: Jakub Palider <jpalider@marvell.com>
Reviewed-by: Jerin Jacob <jerinj@marvell.com>
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