On Fri, Jun 17, 2016 at 04:57:21PM +0900, Andi Shyti wrote: > Some SPI connected devices do not have any CS line connected as > some devices are alway enabled. Indeed, until now, a common > workaround was to assign to num_chipselect a -1 value or 255 > (num_chipselect is unsigned). > > In this case do not fail and defer to the SPI device drivers the > responsibility to check whether the num-cs is '0'. A SPI controller always has one chip seelct, it may not be controllable but it's at least logically present.
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