Hi all, thanks for your responses. I will check once back in office and come back to you with results.
@cmbaker3/Chad: would it be possibe to share your uEnv.txt file with me (with the dtbo enabled)? Just do be sure that I do the right thing here... Would be great and thank you so much!!! Best, Marco Am Montag, 30. April 2018 21:47:53 UTC+2 schrieb cmbaker3: > > It is a workaround for a bug, I believe. When I enable the dtbo, I get > the following directory constructed during the boot process > /sys/devices/platform/ocp/ocp:P9_28_pinmux > Without the dtbo, this directory is missing. > Chad > > On 4/30/18 2:24 PM, Rick Mann wrote: > >> On Apr 30, 2018, at 08:22 , Chad Baker <[email protected] <javascript:>> > wrote: > >> > >> Did you add the BB-SPIDEV1-00A0.dtbo to the device tree boot list in > uEnv.txt? > > Should that be necessary if one is using CAPE-UNIVERSAL? > > > > > >> Chad > >> > >> > >> On 4/30/18 7:51 AM, [email protected] <javascript:> wrote: > >>> 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] > >>> -- > >>> 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] <javascript:>. > >>> 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. > >> > >> -- > >> 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] <javascript:>. > >> To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/30e8fef7-bd03-37a6-b8a9-e4bfad41445d%40gmail.com. > > > >> For more options, visit https://groups.google.com/d/optout. > > > > -- 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/260f690c-51b5-4d7a-ad22-67f313a020ad%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
