It's probably for clock-stretching. Both pins clock and data need to go both ways.
On Thursday, February 21, 2019 at 9:58:12 AM UTC-5, waplu...@gmail.com wrote: > > Thanks - you saved my day! I just ran into the same quirk. Truly bizzare > that the SPI_CLK pinmux has to be set as an input in master mode where the > pin is clearly an output. > > On Tuesday, May 7, 2013 at 10:21:11 AM UTC-6, ky...@cranehome.info wrote: >> >> Ok at least I'm not that stupid then. ;) >> >> On Tuesday, May 7, 2013 10:51:59 AM UTC-5, wb666...@gmail.com wrote: >>> >>> Its a quirk of the SPI hardware as far as I can tell, even on the >>> original Beagleboard the SPI_CLK pinmux has to be set as an input. >>> >> -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/6138aa63-d406-4679-a0ab-8bf32189a8d2%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
