tree ca5c1473362ebcef7a48a3f4e2af551fc9252de1
parent c3883e00aeb5d9b8d240eaac81627d12a508c9bd
author Alexander Graf <agraf@suse.de> 1516878348 +0100
committer Tom Rini <trini@konsulko.com> 1517160454 -0500

serial_bcm283x_mu: Fail loading if not muxed

The bcm283x mini-uart is only really usable as U-Boot serial output
when it is muxed to the UART pins of the RPi pin header.

So fail probing in case it is not muxed correctly, as in that case
firmware did not initialize it properly either.

Signed-off-by: Alexander Graf <agraf@suse.de>