Hi all, I have to bring this thread to life again, as I'm facing the same issue:
all I want to do is to assign p9_29 as "spi_cs" on my BBB running "4.9.78-ti-r94". Running "config-pin -l p9_28" leads to "default gpio gpio_pu gpio_pd gpio_input spi_cs pwm pruout pruin". So all looks good, as this pin can be used in spi_cs mode. Now I want to configure the pin to actually work as spi pin: config-pin p9_28 spi_cs P9_28 pinmux file not found! sudo: no askpass program specified, try setting SUDO_ASKPASS Cannot write pinmux file: /sys/devices/platform/ocp/ocp*P9_28_pinmux/state The same error is printed when running "config-pin p9_29 spi" or "config-pin p9_31 spi_sclk". However, command "config-pin p9_30 spi" works well. Would really appreciate if someone can help out here! Best regards, Marco Am Samstag, 28. Januar 2017 02:51:38 UTC+1 schrieb Charles Steinkuehler: > > On 1/27/2017 7:43 PM, Drew Fustini wrote: > > > > Charles / Robert: > > Should P9.28 be SPI by default? > > All pins are GPIO by default, with pull up/down set to match the reset > defaults of the processor. To use P9.28 as SPI, in addition to > loading cape-universal, it is necessary to run: > > config-pin P9.28 spi > > If this does not result in the pinmux being set to spi, it's a bug. > > -- > Charles Steinkuehler > [email protected] <javascript:> > -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/89254b2e-33ca-4ea0-bb9f-3ca89270f89c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
