tree c9fe621ee38257400b50f1e8a518b3ea60a4ab96
parent 889f54937cb4d145be9bce6b1f08f8bc32b1c421
author Jan Kundrát <jan.kundrat@cesnet.cz> 1518095975 +0100
committer Jan Kundrát <jan.kundrat@cesnet.cz> 1518458516 +0100

Lumentum OCM: setup the SPI bus

Too bad that we're going to use the J18 header as well. A possible
alternative could be something like a NOR gate at the CS1 and CS2 pins
which triggers when both of them are at logic zero. That *might* work.

That lovely kernel warning about "spidev" not being a shiny value in DT
is, well, just lovely. Yup, because patching kernel is definitely
something that one just wants to do. Oh well.

Oh, and this requires an out-of-tree patch for that udelay thingy.

Change-Id: If9e444366fb4c4a2fc592ca99e84048a9c501da1