Thanks, Drew I'm able to set P9.28 after follow your uEnv.txt content. But my screen also not working by loading cape-universala (of course it exported all pins),
My idea is cape-universal says it exports all pins not used by HDMIN and eMMC (including audio), so I should be able to set P9.28 as SPI by loading cape-universal only, but I can't. And I found that cape-universal dts files are different between Robert's and cdsteinkuehler's, I would like to know do i need to modify dts file by myself? -Lindo Drew Fustini於 2017年1月25日星期三 UTC+8下午3時19分41秒寫道： > > On Tue, Jan 24, 2017 at 01:53:17AM -0800, Lindo wrote: > > I'm trying to use cdsteinkuehler's beaglebone-universal-io > > <https://github.com/cdsteinkuehler/beaglebone-universal-io > <https://www.google.com/url?q=https%3A%2F%2Fgithub.com%2Fcdsteinkuehler%2Fbeaglebone-universal-io&sa=D&sntz=1&usg=AFQjCNF57dQM-v9P2qE8rSTpN5CC6vgWVA>> > > to config > > P9_28-31 as spi interface. After loading cape-universal overlay first, I > > got the "P9_28 pinmux file not found!" message when I configure P9_28 > pin > > > > config-pin P9.28 spi > > P9_28 pinmux file not found! > > cape-universala overlay not found > > run "config-pin overlay cape-universala" to load the cape > > You'll need to load cape-universala for P9.28 to be available. > > Here is my /boot/uEnv.txt: > > cape_enable=bone_capemgr.enable_partno=cape-universala > cmdline=coherent_pool=1M quiet cape_universal=enable > dtb=am335x-boneblack-overlay.dtb > uname_r=4.4.41-ti-r83 > > I am able to set P9.28 to spi: > > root@beaglebone:~# config-pin -l P9.28 spi > default gpio gpio_pu gpio_pd pwm spi pwm2 pruout pruin > root@beaglebone:~# config-pin P9.28 spi > root@beaglebone:~# config-pin -q P9.28 > P9_28 Mode: spi > > > -Drew > -- 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/a9624e04-d513-456f-ac5a-07d9e620bfe2%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
