Messages in this thread | | | Date | Fri, 17 Jun 2016 11:47:25 +0100 | From | Mark Brown <> | Subject | Re: [PATCH 1/5] spi: do not fail if the CS line is not connected |
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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. [unhandled content-type:application/pgp-signature] | |