Hi Tomasz,

quoted

The SPI 3 bus uses two clocks, a bus clock and an input clock.
Do not disable the clocks when unused in order to allow access to
the SPI 3 device.

If unused, why would access to SPI 3 device needed?

because next I will submit a small driver which uses the SPI3.
Actually in the exynos5433 boards all the SPI are used but not all
the drivers are ported to mainline.

Thanks,
Andi