[riot-notifications] [RIOT-OS/RIOT] cpu/sam0_common/spi: demux SPI output pins before entering deep sleep (#14105)

Juergen Fitschen notifications at github.com
Fri May 22 13:23:56 CEST 2020

After some digging around, I came to the conclusion that this behavior is not related to the PM!
If the SPI peripheral is disabled (what happens during `spi_release()`), all output pins go HIGH-Z! It just becomes obvious during PM ... so I'll close this PR and fix this issue in #14107.

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