Geert Uytterhoeven 29f9ffa0e1 spi: slave: Add SPI slave handler reporting uptime at previous message ...

Add an example SPI slave handler responding with the uptime at the time
of reception of the last SPI message.

This can be used by an external microcontroller as a dead man's switch.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

2017-05-26 13:12:04 +01:00

2.9 KiB

Raw Blame History

View Raw